Rotating assembly, floor brush structure and floor washing machine

Abstract

The utility model provides a rotating assembly, a floor brush structure and a scrubber, the rotating assembly comprises a rotating head, a driving device is used for being in driving connection with the rotating head so as to drive the rotating head to rotate in the forward direction or the reverse direction; the rotating head comprises a main body part and a convex part which are connected with each other, and the convex part protrudes out of the outer wall of the main body part; the rotating head is inserted into the transmission part, the transmission part is provided with an installation groove matched with the main body part and a transmission groove matched with the protruding part, the transmission groove communicates with the installation groove, and the outer wall of the protruding part is used for being connected with the groove wall of the transmission groove in an abutting mode so that the transmission part can be driven to rotate through the rotating head; and in the extending direction from the driving device to the rotating head, the protruding part and the transmission groove are both in a gradually-expanding shape. By means of the technical scheme, the technical problem that in the prior art, when a rotating head drives a transmission piece to rotate, the transmission piece is prone to disengaging from the rotating head can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of floor scrubbers, and in particular to a rotating assembly, a floor brush structure and a floor scrubber. Background Art

[0002] At present, in the technical field of floor scrubbers, in order to effectively realize the self-cleaning of the roller brush, the transmission mechanism of the roller brush driven by the motor is usually set to rotate in both directions. The motor drives the rotating head to rotate in both directions, and then the transmission cooperation between the rotating head and the transmission member drives the roller brush connected to the transmission member to rotate in both directions, that is, the protrusion on the rotating head and the two opposite side walls of the groove of the transmission member are respectively abutted to realize the rotation in both directions.

[0003] However, in the existing rotational transmission cooperation between the rotating head and the transmission member, the transmission member is often easy to slip out in the direction away from the motor. Thus, when the roller brush connected to the transmission member has no locking device, the transmission member will drive the roller brush out; when the roller brush connected to the transmission member is provided with a locking device, the locking device will be subjected to excessive force. Both of the above situations will affect the normal use of the roller brush. Utility Model Content

[0004] The main purpose of the utility model is to provide a rotating assembly, a floor brush structure and a floor scrubber to solve the technical problem in the prior art that the transmission part is easily disengaged from the rotating head during the process of the rotating head driving the transmission part to rotate.

[0005] In order to achieve the above object, according to one aspect of the utility model, a rotating assembly is provided, comprising:

[0006] The rotating head, the driving device is used to drive and connect with the rotating head to drive the rotating head to rotate forward or reversely; the rotating head includes a main body and a protruding part connected to each other, and the protruding part is arranged to protrude from the outer wall of the main body;

[0007] A transmission member, the rotating head is inserted into the transmission member, the transmission member has a mounting groove adapted to the main body and a transmission groove adapted to the raised portion, the transmission groove is communicated with the mounting groove, and the outer wall of the raised portion is used to abut against the groove wall of the transmission groove, so as to drive the transmission member to rotate through the rotating head;

[0008] Wherein, along the extension direction from the driving device to the rotating head, the protrusion and the transmission groove are both gradually expanding.

[0009] Further, the main body is a cylindrical structure; and / or,

[0010] The raised top surface of the raised portion is trapezoidal or V-shaped.

[0011] Further, the protrusion has a first abutting surface and a second abutting surface that are arranged oppositely, the transmission groove has a first side wall surface and a second side wall surface that are arranged oppositely, the first abutting surface is arranged oppositely to the first side wall surface, the first abutting surface is used to fit with the first side wall surface, the second abutting surface is arranged oppositely to the second side wall surface, and the second abutting surface is used to fit with the second side wall surface; along the extension direction from the driving device to the rotating head, the first abutting surface and the second abutting surface are gradually expanded;

[0012] Wherein, the protrusion and the transmission groove are in interference fit; or,

[0013] The protrusion and the transmission groove are clearance-matched.

[0014] Furthermore, the protrusion has a first abutting surface and a second abutting surface which are arranged opposite to each other and are used to abut against the groove wall of the transmission groove, and the angle between the first abutting surface and the second abutting surface is α, 10°≤α≤40°.

[0015] Furthermore, the rotating head further comprises an escape portion, the escape portion is arranged to protrude from the outer wall of the main body, and one end of the escape portion is connected to an end of the protruding portion away from the driving device;

[0016] Wherein, along the extension direction from one end of the avoidance portion to the other end of the avoidance portion, the cross-sectional area of ​​the avoidance portion gradually decreases; and / or,

[0017] Along the extension direction from one end of the avoidance portion to the other end of the avoidance portion, the width of the avoidance portion gradually decreases; and / or,

[0018] Along the extension direction from one end of the avoidance portion to the other end of the avoidance portion, the height of the avoidance portion gradually decreases; and / or,

[0019] The avoidance top surface of the avoidance portion is an isosceles triangle surface or an isosceles trapezoid surface.

[0020] Furthermore, along the axial direction of the main body, the length of the protrusion is L 1 , the length of the avoidance section is L 2 , 1 / 5≤L 1 / L 2 ≤4 / 5; and / or,

[0021] The included angle between the avoidance top surface of the avoidance portion and the axial direction of the main body portion is β, and 0<β≤30°.

[0022] Further, the transmission member includes a main body and at least two transmission protrusions, the main body has a recessed portion, the at least two transmission protrusions are arranged in the recessed portion at intervals, the parts of the at least two transmission protrusions away from the main body are used to enclose the installation groove, and the two adjacent transmission protrusions are arranged at intervals to enclose the transmission groove;

[0023] Wherein, along the extension direction from the driving device to the transmission member, the transmission protrusion is in a tapered shape; and / or,

[0024] One end of the transmission protrusion close to the insertion opening of the recessed part has a guide surface, and along the extension direction from the insertion opening of the recessed part to the bottom surface of the recessed part, the distance between the guide surface and the inner wall of the recessed part gradually increases.

[0025] Furthermore, the transmission member further comprises at least two transmission protrusions, and two adjacent transmission protrusions are arranged at intervals to enclose a transmission groove; along the extension direction from the driving device to the transmission member, the transmission protrusion is a tapered shape;

[0026] The transmission member also includes a reinforcing protrusion, which is connected to the end of the transmission protrusion away from the driving device, and the minimum cross-sectional area of ​​the reinforcing protrusion is T min , the minimum cross-sectional area of ​​the transmission protrusion is S min , T min ≥S min .

[0027] According to another aspect of the utility model, a floor brush structure is provided, comprising:

[0028] The rotating assembly provided above;

[0029] A roller brush, which is sleeved on the rotating assembly and connected to a transmission member of the rotating assembly;

[0030] A driving device is provided, and a roller brush sleeve is arranged on the driving device.

[0031] Furthermore, the floor brush structure further comprises a rotating sleeve, which is arranged at one end of the driving device away from the rotating assembly;

[0032] Wherein, the rotating sleeve and the roller brush are interference fit; and / or,

[0033] The rotating sleeve is made of rubber.

[0034] According to another aspect of the utility model, there is provided a floor scrubber, comprising:

[0035] The floor brush structure provided above;

[0036] The fuselage structure and the floor brush structure are arranged on the fuselage structure.

[0037] By applying the technical solution of the utility model, the gradually expanding setting of the protrusion and the transmission groove can make the direction of the driving force at the point where the outer wall of the protrusion abuts against the groove wall of the transmission groove be toward the driving device connected to the rotating head when the rotating head rotates forward or reversely. In this way, whether it is forward or reverse rotation, the direction of the driving force received by the transmission member is always toward one side of the driving device, which effectively reduces the risk of the transmission member disengaging from the rotating head or the transmission failure between the transmission member and the rotating head during the operation of the rotating assembly, and ensures the rotational coordination between the transmission member and the rotating head. Therefore, the technical solution of the utility model can solve the technical problem in the prior art that the transmission member is easy to disengage from the rotating head when the rotating head drives the transmission member to rotate. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0039] Figure 1 The structure diagram of the rotating head provided according to the first embodiment of the utility model is shown;

[0040] Figure 2 A schematic structural diagram of a rotating head at another angle provided according to the first embodiment of the utility model is shown;

[0041] Figure 3 A schematic diagram of the structure of the side portion of the rotating head provided according to the first embodiment of the utility model is shown;

[0042] Figure 4 A schematic structural diagram of another angle at the side of the rotating head provided in the first embodiment of the utility model is shown;

[0043] Figure 5 A schematic structural diagram of the end portion of a rotating head provided according to the first embodiment of the utility model is shown;

[0044] Figure 6 A schematic structural diagram of a transmission member provided according to the first embodiment of the present utility model is shown;

[0045] Figure 7 A schematic structural diagram of a transmission member according to the first embodiment of the present utility model from another angle is shown;

[0046] Figure 8 A cross-sectional view of a transmission member provided according to the first embodiment of the present utility model is shown;

[0047] Fig. 9 A schematic structural diagram of the end portion of a transmission member provided according to the first embodiment of the present utility model is shown;

[0048] Fig.10 The figure shows a schematic structural diagram of the assembled rotating assembly provided in the first embodiment of the present utility model;

[0049] Fig.11 A structural schematic diagram of another angle of the assembled rotating assembly provided in the first embodiment of the utility model is shown;

[0050] Fig.12 A schematic diagram showing the matching relationship between the protrusion and the transmission protrusion of the rotating assembly provided in the first embodiment of the present utility model when the rotating assembly is rotating forward;

[0051] Fig.13 A schematic diagram showing the matching relationship between the protrusion and the transmission protrusion when the rotating assembly provided in the first embodiment of the present utility model is reversed is shown;

[0052] Fig.14 A schematic diagram showing the matching relationship between the avoidance portion and the transmission protrusion during assembly of the rotating assembly provided in the first embodiment of the utility model is shown;

[0053] Fig.15 A schematic structural diagram of a floor brush structure provided according to the second embodiment of the present utility model is shown;

[0054] Fig.16 The figure shows the internal structure of the floor brush structure provided in the second embodiment of the present utility model;

[0055] Fig.17 Shows Fig.16 The enlarged schematic diagram of point A in the middle;

[0056] Fig.18 Shows Fig.16 The enlarged schematic diagram of point B in the middle;

[0057] Fig.19 A structural schematic diagram of a floor scrubber provided according to Embodiment 3 of the present utility model is shown.

[0058] The above drawings include the following reference numerals:

[0059] 10. driving device; 11. fixing shell;

[0060] 20, rotating head; 21, main body; 22, raised portion; 221, raised top surface; 222, first abutting surface; 223, second abutting surface; 23, avoidance portion; 231, avoidance top surface;

[0061] 30. Transmission member; 31. Mounting groove; 32. Transmission groove; 321. First side wall surface; 322. Second side wall surface; 33. Main body; 331. Concave portion; 3311. Socket; 3312. Bottom surface; 34. Transmission protrusion; 341. Guide surface; 35. Reinforcement protrusion; 36. Demolding hole;

[0062] 40. Roller brush; 41. Roller brush flannel;

[0063] 50. Rotating sleeve;

[0064] 60. Handle;

[0065] 70. Bearings;

[0066] 80. Screws;

[0067] 1. Floor brush structure;

[0068] 2. Fuselage structure;

[0069] 3. Handle structure. DETAILED DESCRIPTION

[0070] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0071] like Figures 1 to 14 As shown, the first embodiment of the utility model provides a rotating assembly, which includes a rotating head 20 and a transmission member 30. The driving device 10 is used to drive and connect with the rotating head 20 to drive the rotating head 20 to rotate forward or reversely; the rotating head 20 includes a main body 21 and a protrusion 22 connected to each other, and the protrusion 22 is arranged on the outer wall of the main body 21. The rotating head 20 is inserted into the transmission member 30, and the transmission member 30 has a mounting groove 31 adapted to the main body 21 and a transmission groove 32 adapted to the protrusion 22, and the transmission groove 32 is connected to the mounting groove 31. The outer wall of the protrusion 22 is used to abut against the groove wall of the transmission groove 32, so as to drive the transmission member 30 to rotate through the rotating head 20. Among them, along the extension direction from the driving device 10 to the rotating head 20, the protrusion 22 and the transmission groove 32 are both gradually expanding shapes.

[0072] By adopting the rotating assembly provided in this embodiment, the protrusion 22 and the transmission groove 32 can be gradually expanded so that when the rotating head rotates forward or reversely, the direction of the driving force at the point where the outer wall of the protrusion 22 abuts against the groove wall of the transmission groove 32 can be toward the driving device 10 that is connected to the rotating head 20. In this way, whether it is forward or reverse rotation, the direction of the driving force received by the transmission member 30 is always toward the side of the driving device 10, which effectively reduces the risk of the transmission member 30 coming out of the rotating head 20 or the transmission failure between the transmission member 30 and the rotating head 20 during the operation of the rotating assembly, and ensures the rotational coordination between the transmission member 30 and the rotating head 20. Therefore, the rotating assembly provided in this embodiment can solve the technical problem in the prior art that the transmission member is easy to come out of the rotating head when the rotating head drives the transmission member to rotate.

[0073] Specifically, the gradual expansion setting of the protrusion 22 can be understood as: along the extension direction from the driving device 10 to the rotating head 20, the distance between the side walls on both sides of the protrusion 22 gradually increases, and the side walls on both sides of the protrusion 22 gradually shift in the direction away from the middle of the protrusion 22.

[0074] Specifically, the main body 21 is a cylindrical structure. With such a structural arrangement, the transmission member 30 can be driven to rotate by the cylindrical main body 21 and the protrusion 22 arranged on the outer wall of the main body 21. The cylindrical surface of the cylindrical structure is an axisymmetric structure, which is convenient for insertion.

[0075] Specifically, the raised top surface 221 of the raised portion 22 is trapezoidal or V-shaped. With such a structural arrangement, the relatively arranged and non-parallel side surfaces of the raised portion 22 with a trapezoidal raised top surface 221 can abut against the groove wall of the transmission groove 32, or the relatively arranged and non-parallel side surfaces of the raised portion 22 with a V-shaped raised top surface 221 can abut against the groove wall of the transmission groove 32, so that the transmission member 30 is subjected to a driving force toward one side of the driving device 10, thereby driving the rotation of the transmission member 30 and preventing the transmission member 30 from coming out relative to the rotating head 20.

[0076] Specifically, the raised top surface 221 is a trapezoid, which can be understood as: along the extension direction from the drive device 10 to the rotating head 20, the spacing between the two non-parallel sides of the trapezoidal surface gradually increases, and both gradually deviate in the direction away from the middle of the trapezoidal surface. Specifically, the raised top surface 221 is a V-shape, which can be understood as: along the extension direction from the drive device 10 to the rotating head 20, the spacing between the two sides of the V-shaped surface that form the V-shape gradually increases, and both gradually deviate in the direction away from the middle of the V-shaped surface.

[0077] Specifically, the protrusion 22 has a first abutting surface 222 and a second abutting surface 223 that are arranged opposite to each other, and the transmission groove 32 has a first side wall surface 321 and a second side wall surface 322 that are arranged opposite to each other. The first abutting surface 222 is arranged opposite to the first side wall surface 321, and the first abutting surface 222 is used to fit with the first side wall surface 321. The second abutting surface 223 is arranged opposite to the second side wall surface 322, and the second abutting surface 223 is used to fit with the second side wall surface 322. Along the extension direction from the driving device 10 to the rotating head 20, the first abutting surface 222 and the second abutting surface 223 are gradually expanded. Among them, the protrusion 22 and the transmission groove 32 are interference fit. In this way, the interference fit between the protrusion 22 and the transmission groove 32 can further ensure the relative stillness between the rotating head 20 and the transmission member 30 during the rotation process. When rotating forward, the first abutting surface 222 and the first side wall surface 321 are tightly fitted and abutted to generate a driving force toward one side of the driving device 10; when rotating reversely, the second abutting surface 223 and the second side wall surface 322 are tightly fitted and abutted to generate a driving force toward one side of the driving device 10.

[0078] Specifically, the protrusion 22 has a first abutting surface 222 and a second abutting surface 223 that are arranged opposite to each other, and the transmission groove 32 has a first side wall surface 321 and a second side wall surface 322 that are arranged opposite to each other. The first abutting surface 222 is arranged opposite to the first side wall surface 321, and the first abutting surface 222 is used to fit with the first side wall surface 321. The second abutting surface 223 is arranged opposite to the second side wall surface 322, and the second abutting surface 223 is used to fit with the second side wall surface 322. Along the extension direction from the driving device 10 to the rotating head 20, the first abutting surface 222 and the second abutting surface 223 are gradually expanded. Among them, the protrusion 22 and the transmission groove 32 are clearance-matched. In this way, through the clearance-matched between the protrusion 22 and the transmission groove 32, it is easier to insert the rotating head 20 into the transmission member 30 during assembly, and the assembly is better. At the same time, when rotating forward, the first abutting surface 222 and the first side wall surface 321 are tightly fitted and abutted to generate a driving force toward one side of the driving device 10; when rotating reversely, the second abutting surface 223 and the second side wall surface 322 are tightly fitted and abutted to generate a driving force toward one side of the driving device 10.

[0079] In this embodiment, the protrusion 22 has a first abutting surface 222 and a second abutting surface 223 which are arranged opposite to each other and are used to abut against the groove wall of the transmission groove 32. The angle between the first abutting surface 222 and the second abutting surface 223 is α, 10°≤α≤40°. With such a structural arrangement, the greater the angle between the first abutting surface 222 and the second abutting surface 223, the greater the friction force to which the rotating head 20 is subjected when inserting or disengaging the transmission member 30. When the angle between the first abutting surface 222 and the second abutting surface 223 is smaller, the component force of the driving force applied by the rotating head 20 to the transmission member 30 toward the side of the drive device 10 is smaller. Therefore, the use of such an angle range can better ensure that the force direction of the abutment is toward the side of the drive device 10, and also facilitate the insertion or disengagement of the rotating head 20.

[0080] Specifically, the rotating head 20 further includes a relief portion 23, which is protruding from the outer wall of the main body 21, and one end of the relief portion 23 is connected to the end of the protruding portion 22 away from the driving device 10. The cross-sectional area of ​​the relief portion 23 gradually decreases along the extending direction from one end of the relief portion 23 to the other end of the relief portion 23. With such a structural arrangement, Fig.13 The avoidance portion 23 can be provided to facilitate assembly between the rotating head 20 and the transmission member 30, so that the rotating head 20 can be better inserted into the transmission member 30, thereby reducing wear on the rotating head 20 and the transmission member 30 during assembly and protecting their service life.

[0081] Specifically, “the cross-sectional area of ​​the escape portion 23 gradually decreases” means that the area of ​​the cross section of the escape portion 23 perpendicular to the radial direction of the escape portion 23 along the main body portion 21 gradually decreases.

[0082] Specifically, the rotating head 20 further includes an escape portion 23, which is protruding from the outer wall of the main body 21, and one end of the escape portion 23 is connected to the end of the protrusion 22 away from the driving device 10. The width of the escape portion 23 gradually decreases along the extension direction from one end of the escape portion 23 to the other end of the escape portion 23. With such a structural arrangement, the arrangement of the escape portion 23 can facilitate the assembly between the rotating head 20 and the transmission member 30, facilitate better insertion of the rotating head 20 on the transmission member 30, reduce the wear of the rotating head 20 and the transmission member 30 during the assembly process, and protect their service life.

[0083] Specifically, the width of the escape portion 23 refers to the width of the cross section of the escape portion 23 , that is, the width of the cross section along the circumferential direction of the main body portion 21 .

[0084] Specifically, the rotating head 20 further includes a relief portion 23, which is protruding from the outer wall of the main body 21, and one end of the relief portion 23 is connected to the end of the protrusion 22 away from the driving device 10. The height of the relief portion 23 gradually decreases along the extension direction from one end of the relief portion 23 to the other end of the relief portion 23. With such a structural arrangement, the relief portion 23 can be arranged to facilitate the assembly between the rotating head 20 and the transmission member 30, so that the rotating head 20 can be better inserted into the transmission member 30, and the wear of the rotating head 20 and the transmission member 30 during the assembly process can be reduced, thereby protecting their service life.

[0085] Specifically, the height of the avoidance portion 23 refers to the protruding distance of the avoidance portion 23 from the main body 21 , that is, the vertical distance between the point farthest from the main body 21 on the cross section of the avoidance portion 23 and the outer wall of the main body 21 .

[0086] Specifically, the rotating head 20 also includes an escape portion 23, which is protruding from the outer wall of the main body 21, and one end of the escape portion 23 is connected to the end of the protrusion 22 away from the driving device 10. Among them, the escape top surface 231 of the escape portion 23 is an isosceles triangle surface or an isosceles trapezoid surface. With such a structural setting, the setting of the escape portion 23 can facilitate the assembly between the rotating head 20 and the transmission member 30 by setting the escape top surface 231 as an isosceles triangle surface or an isosceles trapezoid surface, so that the rotating head 20 is better inserted into the transmission member 30, the wear of the rotating head 20 and the transmission member 30 during the assembly process is reduced, and their service life is protected.

[0087] In this embodiment, along the axial direction of the main body 21, the length of the protrusion 22 is L 1 , the length of the avoidance portion 23 is L 2 , 1 / 5≤L 1 / L 2 ≤4 / 5. With such a structural setting, it is possible to ensure that there is sufficient contact area between the protrusion 22 and the transmission groove 32, and avoid the wear of the protrusion 22 and the transmission groove 32 caused by too small contact amount but large force. At the same time, it is also ensured that the avoidance portion 23 has a sufficient length to facilitate the protrusion 22 to be inserted into the transmission groove 32.

[0088] Specifically, the angle between the avoidance top surface 231 of the avoidance portion 23 and the axial direction of the main body 21 is β, 0<β≤30°. With such a structural arrangement, the arrangement of the avoidance portion 23 can facilitate the assembly guidance between the rotating head 20 and the transmission member 30, facilitate better insertion of the rotating head 20 on the transmission member 30, reduce the wear of the rotating head 20 and the transmission member 30 during the assembly process, and protect their service life. The raised portion 22 has a connecting side and a raised top side that are relatively arranged, the connecting side is connected to the inner wall of the recessed portion 331, the raised top side is located on the side of the connecting side away from the inner wall of the recessed portion 331, and the surface at the raised top side forms a raised top surface 221.

[0089] Specifically, the height of one end of the protrusion 22 connected to the avoidance portion 23 is h 1 ,h 1 ≥3mm.

[0090] In this embodiment, the transmission member 30 includes a body portion 33 and at least two transmission protrusions 34, the body portion 33 has a recessed portion 331, at least two transmission protrusions 34 are arranged at intervals in the recessed portion 331, and the parts of at least two transmission protrusions 34 away from the body portion 33 are used to enclose the installation groove 31, and two adjacent transmission protrusions 34 are arranged at intervals to enclose the transmission groove 32. Among them, along the extension direction from the drive device 10 to the transmission member 30, the transmission protrusion 34 is a tapered shape. With such a structural setting, the transmission groove 32 can be formed by the setting of the transmission protrusion 34, and by making the transmission protrusion 34 a tapered shape to match the shape of the protrusion 22, it is effectively ensured that the force direction of the abutment between the transmission protrusion 34 and the protrusion 22 is toward one side of the drive device 10, thereby reducing the risk of the transmission member 30 coming out relative to the rotating head 20.

[0091] like Fig.11 and Fig.12 The arrow in the figure indicates the force direction of the transmission protrusion 34. When rotating forward, the protrusion 22 fits with the outer wall of one of the two adjacent transmission protrusions 34. When rotating reversely, the protrusion 22 fits with the outer wall of the other of the two adjacent transmission protrusions 34.

[0092] In this embodiment, the transmission member 30 includes a body 33 and at least two transmission protrusions 34, the body 33 has a recessed portion 331, at least two transmission protrusions 34 are arranged in the recessed portion 331 at intervals, and the parts of at least two transmission protrusions 34 away from the body 33 are used to enclose the installation groove 31, and two adjacent transmission protrusions 34 are arranged at intervals to enclose the transmission groove 32. Among them, one end of the transmission protrusion 34 close to the socket 3311 of the recessed portion 331 has a guide surface 341, and along the extension direction from the socket 3311 of the recessed portion 331 to the bottom surface 3312 of the recessed portion 331, the distance between the guide surface 341 and the inner wall of the recessed portion 331 gradually increases. Specifically, the guide surface 341 can be an inclined surface or a curved surface. With such a structural arrangement, the arrangement of the guide surface 341 can facilitate the plug-in fit between the rotating head 20 and the transmission member 30, and facilitate better insertion of the rotating head 20 into the recessed portion 331 of the transmission member 30.

[0093] Specifically, the transmission member 30 further includes at least two transmission protrusions 34, and two adjacent transmission protrusions 34 are arranged at intervals to enclose the transmission groove 32; along the extension direction from the drive device 10 to the transmission member 30, the transmission protrusion 34 is a tapered shape. The transmission member 30 further includes a reinforcing protrusion 35, which is connected to the end of the transmission protrusion 34 away from the drive device 10, and the minimum cross-sectional area of ​​the reinforcing protrusion 35 is T min , the minimum cross-sectional area of ​​the transmission protrusion 34 is S min , T min ≥S min By adopting such a structural setting, the structural strength of the transmission protrusion 34 can be enhanced by strengthening the setting of the protrusion 35, thereby ensuring its force-bearing performance and reducing the risk of the transmission protrusion 34 being damaged due to excessive driving force during rotation, thereby affecting the rotation operation.

[0094] Specifically, a demoulding hole 36 is provided at one end of the transmission member 30 away from the driving device 10 , so that when the transmission member 30 is manufactured, it is convenient to separate the transmission member 30 from the mold.

[0095] Specifically, in order to ensure the supporting effect of the protrusion 22, the height of the protrusion 22 is at least 3 mm. The diameter of the main body 21 is at least 15 mm. Preferably, the diameter of the main body 21 is at most 20 mm.

[0096] Specifically, the ratio of the maximum height of the protrusion 22 to the diameter of the main body 21 is in the range of 1 / 5 to 1 / 2. In this way, the protrusion 22 can be effectively guided and have a certain structural strength, while avoiding the protrusion 22 from occupying too much space.

[0097] Specifically, in order to prevent the output shaft of the driving device 10 from being too long, that is, to avoid the occurrence of a single cantilever, the overall length of the rotating head 20 in the axial direction of the main body 21 is in the range of 15 mm to 100 mm. The length of the avoidance portion 23 in the axial direction of the main body 21 should be greater than 8 mm, and the length of the protrusion 22 in the axial direction of the main body 21 should be greater than 10 mm.

[0098] Specifically, considering the support strength, the width of the maximum cross-sectional area of ​​the protrusion 22 is at least 4 mm. In order to ensure the strength of the insertion structure, the spacing between the protrusions 22 is at least 5 mm. The ratio of the width of the maximum cross-sectional area of ​​the protrusion 22 to the circumference of the cylindrical main body 21 is related to the number of protrusions 22. Taking 5 protrusions 22 as an example, the ratio of the width of the maximum cross-sectional area of ​​the protrusion 22 to the circumference of the cylindrical main body 21 is in the range of 6%-9%.

[0099] Specifically, the minimum distance between two adjacent transmission protrusions 34 is d, and d≥4 mm.

[0100] Specifically, the overall shape of the rotating head 20 is cylindrical, and there are evenly distributed diamond-shaped protrusions on the periphery of the cylinder (the protrusion 22 and the avoidance portion 23 are connected to form the diamond-shaped protrusion). When viewed from the extension direction from one end of the rotating head 20 away from the driving device 10 to the other end of the rotating head 20 close to the driving device 10, the overall height of the diamond-shaped protrusion gradually increases from the front end (equivalent to the end of the rotating head 20 away from the driving device 10) to the back (equivalent to the other end of the rotating head 20 close to the driving device 10). The smaller the setting increase angle, that is, the lower the height, the more conducive it is to the lateral assembly of the roller brush 40. However, the lower the height will lead to a decrease in the matching amount between the rotating head 20 and the groove of the transmission member 30 (equivalent to the transmission groove 32), and the greater the force on the matching position of the protrusion 22 and the transmission groove 32, the more serious the wear on the rotating head 20 and the transmission member 30. Figure 3, the front end of the protrusion (equivalent to the avoidance portion 23) is in an acute angle shape, the synchronous design angle should be symmetrical, and the setting angle is as small as possible. The smaller the angle, the more conducive it is to assemble the roller brush 40. The smaller the angle, the shorter the length of the two sides of the lower trapezoid (equivalent to the protrusion 22), which also leads to a reduction in the matching area. The angle between the trapezoidal sides on the rotating head 20 should also be adapted according to the rotation speed of the roller brush motor, the matching amount of the rotating sleeve 50, and the locking force of the button at the other end of the roller brush 40. When other conditions remain constant, the greater the angle between the side and the central axis of the trapezoid, the greater the force provided, and the greater the friction force of the corresponding roller brush 40 when it is taken out. When the length and angle of the matching surface of the rotating head 20 remain unchanged, the greater the rotation speed of the roller brush motor, the greater the force applied by the rotating head 20. At this time, the inclination of the matching surface of the rotating head 20 can be appropriately reduced. Similarly, when the interference force of the rotating sleeve 50 and the locking force of the button of the roller brush 40 are large, the inclination of the matching surface of the rotating head 20 can also be reduced at the same time, which is conducive to the extraction of the roller brush 40.

[0101] Specifically, the protrusion 22 can be a plastic part. Considering the strength of the plastic part, the protrusion 22 as a force point cannot be designed too thin, and its strength should be guaranteed. The width of the rotating head 20 is determined by the angle of the avoidance part 23, the angle of the lower trapezoid and the strength of the structural part, and should be guided to a certain distance, that is, the length of the avoidance part 23 cannot be too short or too long. If it is too short, it will be difficult to assemble, and if it is too long, the contact area of ​​the protrusion 22 will be reduced. It is also necessary to ensure that the minimum spacing between the two protrusions 22 is not too small, because the strength of the structural part should also be considered at the place where the transmission member 30 cooperates with the protrusion 22. When the roller brush 40 is installed normally, when rotating in the forward direction, the transmission protrusion 34 of the transmission member 30 on the roller brush 40 will fit with the inclined part of the protrusion 22, and at the same time ensure that the force direction is toward the motor side; when reversing, the motor rotating head 20 rotates in the reverse direction to cooperate with the transmission member 30 of the roller brush 40, and the force is applied to the other end, and at the same time, the force direction is the same as when rotating forward and toward the motor side.

[0102] like Figures 15 to 18 As shown, the second embodiment of the present utility model provides a floor brush structure 1, which includes the rotating assembly, the roller brush 40 and the driving device 10 provided in the first embodiment. The roller brush 40 is sleeved on the rotating assembly, and the roller brush 40 is connected to the transmission member 30 of the rotating assembly. The roller brush 40 is sleeved on the driving device 10.

[0103] The floor brush structure 1 provided in the second embodiment can be gradually expanded by the projection 22 and the transmission groove 32, so that when the rotating head rotates forward or reversely, the direction of the driving force at the abutment between the outer wall of the projection 22 and the groove wall of the transmission groove 32 can be toward the driving device 10 connected to the rotating head 20. In this way, whether it is forward or reverse rotation, the direction of the driving force received by the transmission member 30 is always toward the side of the driving device 10, which effectively reduces the risk of the transmission member 30 being disengaged from the rotating head 20 or the transmission failure between the transmission member 30 and the rotating head 20 during the operation of the rotating assembly, thereby avoiding the risk of the roller brush 40 connected to the transmission member 30 being disengaged, reducing the force on the end of the roller brush 40 away from the driving device 10, and effectively ensuring the normal operation of the floor brush structure 1. Therefore, the floor brush structure 1 provided in this embodiment can solve the technical problem in the prior art that the transmission cooperation between the rotating head and the transmission member cannot ensure that the force direction at the abutment is always toward the driving device.

[0104] Specifically, the floor brush structure 1 further includes a rotating sleeve 50, which is disposed at one end of the driving device 10 away from the rotating assembly. The rotating sleeve 50 is interference-fitted with the roller brush 40. With such a structural arrangement, the roller brush 40 and the driving device 10 can remain relatively stationary through the interference fit between the rotating sleeve 50 and the roller brush 40, thereby preventing the roller brush 40 from coming out relative to the driving device 10 when the roller brush 40 is rotated by the driving device 10.

[0105] Specifically, the floor brush structure 1 further includes a rotating sleeve 50, which is arranged at one end of the driving device 10 away from the rotating assembly, and is made of rubber material. In this way, the rotating sleeve 50 and the roller brush 40 are conveniently arranged to be interference-fitted, and the endurance strength of the rotating sleeve 50 can also be enhanced during the rotation process, so as to avoid the rotating sleeve 50 being damaged by the force generated during the rotation.

[0106] Specifically, the floor brush structure 1 is composed of a roller brush motor (equivalent to the driving device 10), a rotating sleeve 50, a rotating head 20, a motor fixing shell 11, a roller brush assembly (equivalent to the roller brush 40), etc. The roller brush assembly is composed of a handle 60, a roller brush flannel 41, a roller brush shell, etc.

[0107] Specifically, the rotating head 20 is fixed to the rotating head end of the motor by means of screws 80 and an internal hole shaft interference fit. When the motor is started, the rotating head 20 is synchronously driven to rotate. The roller brush 40 is hollow inside, and the roller brush 40 can be inserted into the motor end. There is a transmission member 30 in the inner cavity of the roller brush 40, and the groove of the transmission member 30 can cooperate with the rotating head 20, so that the roller brush 40 rotates synchronously when the motor rotates. At the same time, the rotating sleeve 50 at the motor shaft end is composed of a rubber member. When the roller brush 40 is inserted into the motor, the rotating sleeve 50 and the structural member at the edge of the roller brush 40 are interference fit (the interference amount of this fit should not be too large, otherwise it will make the roller brush 40 difficult to insert, and a smaller interference amount will result in a smaller locking force of the roller brush 40). The interior of the rotating sleeve 50 is supported by a bearing 70 and is fixed to the motor fixed shell 11 by interference fit.

[0108] like Fig.19 As shown, the third embodiment of the present utility model provides a floor scrubber, which includes the floor brush structure 1 and the body structure 2 provided in the second embodiment, and the floor brush structure 1 is arranged on the body structure 2.

[0109] The floor scrubber provided by the third embodiment can be configured to gradually expand the protrusion 22 and the transmission groove 32, so that when the rotating head rotates forward or reversely, the direction of the driving force at the abutment between the outer wall of the protrusion 22 and the groove wall of the transmission groove 32 can be toward the drive device 10 connected to the rotating head 20. In this way, whether it is forward or reverse rotation, the direction of the driving force received by the transmission member 30 is always toward the side of the drive device 10, which effectively reduces the risk of the transmission member 30 being disengaged from the rotating head 20 or the transmission failure between the transmission member 30 and the rotating head 20 during the operation of the rotating assembly, thereby avoiding the risk of the roller brush 40 connected to the transmission member 30 being disengaged, reducing the force on the end of the roller brush 40 away from the drive device 10, effectively ensuring the normal operation of the floor brush structure 1, and thus ensuring the normal operation of the floor scrubber. Therefore, the floor scrubber provided by this embodiment can solve the technical problem in the prior art that the transmission cooperation between the rotating head and the transmission member cannot ensure that the force direction at the abutment is always toward the drive device.

[0110] Specifically, the floor scrubber further comprises a handle structure 3, and the handle structure 3 is arranged on the body structure 2. In this way, the arrangement of the handle structure 3 can facilitate the user to operate the floor scrubber.

[0111] Specifically, the working principle of the floor scrubber is that there is a button on the handle structure 3 to control the switch. When the machine is started, the main working parts such as the suction fan, roller brush motor and water pump are started at the same time. The water pump sprays the water in the water tank onto the roller brush 40 through the pipeline. The roller brush 40 is driven by the roller brush motor to rotate. After the roller brush 40 is soaked in water, it drags the garbage on the ground to the sewage suction port, and the suction fan sucks the garbage into the sewage tank through the pipeline. After cleaning, the machine can be placed on the charging stand for self-cleaning, that is, the roller brush is cleaned when there is no garbage. After self-cleaning is completed, it automatically enters the drying process to dry the roller brush.

[0112] From the above description, it can be seen that the above-mentioned embodiments of the utility model achieve the following technical effects: it ensures that the roller brush is always forced toward the motor side during the entire forward and reverse rotation process of the floor scrubber, reduces the force on the roller brush button end, and also reduces the risk of the roller brush button locking end failing or the roller brush falling out due to lateral force during operation.

[0113] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0114] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the application. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to actual proportional relationships. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0115] In the description of the present application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0116] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0117] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0118] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A rotating assembly, characterized in that: include: A rotating head (20), wherein the driving device (10) is used to be drivingly connected to the rotating head (20) so as to drive the rotating head (20) to rotate in a forward or reverse direction; the rotating head (20) comprises a main body (21) and a protruding portion (22), and the protruding portion (22) is arranged to protrude from the outer wall of the main body (21); a transmission member (30), the rotating head (20) being inserted into the transmission member (30), the transmission member (30) having a mounting groove (31) adapted to the main body (21) and a transmission groove (32) adapted to the protruding portion (22), the transmission groove (32) being communicated with the mounting groove (31), and at least a portion of the outer wall of the protruding portion (22) being used to abut against the groove wall of the transmission groove (32), so as to drive the transmission member (30) to rotate through the rotating head (20); Wherein, along the extension direction from the driving device (10) to the rotating head (20), the protrusion (22) and the transmission groove (32) are both in a gradually expanding shape.

2. The rotating assembly according to claim 1, characterized in that: The protruding portion (22) has a first abutting surface (222) and a second abutting surface (223) that are arranged opposite to each other, and the transmission groove (32) has a first side wall surface (321) and a second side wall surface (322) that are arranged opposite to each other, the first abutting surface (222) is arranged opposite to the first side wall surface (321), the first abutting surface (222) is used to fit with the first side wall surface (321), the second abutting surface (223) is arranged opposite to the second side wall surface (322), and the second abutting surface (223) is used to fit with the second side wall surface (322); along the extending direction from the driving device (10) to the rotating head (20), the first abutting surface (222) and the second abutting surface (223) are arranged to expand gradually; Wherein, the protrusion (22) and the transmission groove (32) are in interference fit; or, The protrusion (22) and the transmission groove (32) are clearance-matched.

3. The rotating assembly according to claim 1, characterized in that: The protrusion (22) comprises a first abutting surface (222) and a second abutting surface (223) which are arranged opposite to each other and are used for abutting against a groove wall of the transmission groove (32); the included angle between the first abutting surface (222) and the second abutting surface (223) is α, and 10°≤α≤40°.

4. The rotating assembly according to claim 1, characterized in that: The main body (21) is a cylindrical structure; and / or, The raised top surface (221) of the raised portion (22) is trapezoidal or V-shaped.

5. The rotating assembly according to claim 1, characterized in that: The rotating head (20) further comprises a relief portion (23), the relief portion (23) being arranged protruding from the outer wall of the main body (21), and one end of the relief portion (23) being connected to one end of the protruding portion (22) away from the driving device (10); Wherein, along the extension direction from one end of the avoidance portion (23) to the other end of the avoidance portion (23), the cross-sectional area of ​​the avoidance portion (23) gradually decreases; and / or, Along the extending direction from one end of the avoidance portion (23) to the other end of the avoidance portion (23), the width of the avoidance portion (23) gradually decreases; and / or, Along the extending direction from one end of the avoidance portion (23) to the other end of the avoidance portion (23), the height of the avoidance portion (23) gradually decreases; and / or, The avoidance top surface (231) of the avoidance portion (23) is an isosceles triangle surface or an isosceles trapezoid surface.

6. The rotating assembly according to claim 5, characterized in that: Along the axial direction of the main body (21), the length of the protruding portion (22) is L1, the length of the avoiding portion (23) is L2, 1 / 5≤L1 / L2≤4 / 5; and / or, The included angle between the avoidance top surface (231) of the avoidance portion (23) and the axial direction of the main body portion (21) is β, and 0<β≤30°.

7. The rotating assembly according to claim 1, characterized in that: The transmission member (30) comprises a main body (33) and at least two transmission protrusions (34), the main body (33) having a recessed portion (331), the at least two transmission protrusions (34) being arranged at intervals in the recessed portion (331), the portions of the at least two transmission protrusions (34) away from the main body (33) being used to enclose the mounting groove (31), and two adjacent transmission protrusions (34) being arranged at intervals to enclose the transmission groove (32); Wherein, along the extension direction from the driving device (10) to the transmission member (30), the transmission protrusion (34) is in a tapered shape; and / or, One end of the transmission protrusion (34) close to the insertion opening (3311) of the recessed portion (331) has a guide surface (341), and along the extension direction from the insertion opening (3311) of the recessed portion (331) to the bottom surface (3312) of the recessed portion (331), the distance between the guide surface (341) and the inner wall of the recessed portion (331) gradually increases.

8. The rotating assembly according to claim 1, characterized in that: The transmission member (30) further comprises at least two transmission protrusions (34), and two adjacent transmission protrusions (34) are arranged at intervals to surround the transmission groove (32); along the extending direction from the driving device (10) to the transmission member (30), the transmission protrusions (34) are in a tapered shape; The transmission member (30) further comprises a reinforcing protrusion (35), the reinforcing protrusion (35) being connected to an end of the transmission protrusion (34) away from the driving device (10), and the minimum cross-sectional area of ​​the reinforcing protrusion (35) being T min The minimum cross-sectional area of ​​the transmission protrusion (34) is S min , T min ≥S min .

9. A floor brush structure, characterized in that: include: The rotating assembly and the roller brush (40) according to any one of claims 1 to 8, wherein the roller brush (40) is sleeved on the rotating assembly, and the roller brush (40) is connected to the transmission member (30) of the rotating assembly; a driving device (10), wherein the roller brush (40) is sleeved on the driving device (10); and a rotating sleeve (50), wherein the rotating sleeve (50) is arranged at one end of the driving device (10) away from the rotating assembly; Wherein, the rotating sleeve (50) and the rolling brush (40) are in interference fit; and / or, The rotating sleeve (50) is made of rubber material.

10. A floor scrubber, characterized in that: include: The floor brush structure as claimed in claim 9; A fuselage structure (2), wherein the floor brush structure is arranged on the fuselage structure (2).

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