Brush and brush head assembly thereof

Abstract

The utility model discloses a brush and a brush head assembly thereof, and belongs to the technical field of brushes. Wherein the brush head assembly comprises an inner brush head, an outer brush head and a driving assembly, the outer brush head is arranged around the outer side of the inner brush head, the driving assembly is provided with an inner rotating shaft and an outer rotating shaft, the outer rotating shaft is arranged around the outer side of the inner rotating shaft, the rotating directions of the outer rotating shaft and the inner rotating shaft are opposite, the inner rotating shaft is connected with the inner brush head, and the outer rotating shaft is connected with the outer brush head. The rotation directions of the outer brush head and the inner brush head are opposite, so that the problem of brush head direction deviation caused by unidirectional rotation of the brush head is solved, the brush head is easier to use, and the cleaning effect of the brush head is improved.

Description

Technical Field

[0001] This application relates to the technical field of brushes, and more particularly to brushes and their brush head assemblies. Background Art

[0002] Currently, brushes, especially electric brushes, are widely used in various fields such as personal care, household cleaning, and industrial cleaning. Brushes are usually designed to be easy to hold and operate, making the cleaning work easier.

[0003] However, the existing brushes have the following defects: due to the single rotation direction of the brush head, when the brush is working, it will generate a movement that offsets to one side, and it is difficult to control the brush head to move straight. Summary of the Invention

[0004] An object of this application is to provide a brush and its brush head assembly, which can achieve the purpose of easy maintenance of the position stability of the brush head and good cleaning effect.

[0005] To achieve the above object, the technical solution adopted in this application is: a brush head assembly, which includes an inner brush head, an outer brush head, and a driving component. The outer brush head is disposed around the outside of the inner brush head. The driving component has an inner rotating shaft and an outer rotating shaft. The outer rotating shaft is disposed around the outside of the inner rotating shaft, and the rotation directions of the outer rotating shaft and the inner rotating shaft are opposite. The inner rotating shaft is connected to the inner brush head, and the outer rotating shaft is connected to the outer brush head.

[0006] As a preference, the inner brush head is detachably connected to an inner adapter. The inner adapter is connected to the inner rotating shaft. The outer brush head is detachably connected to an outer adapter. The outer adapter is connected to the outer rotating shaft. The outer adapter includes an annular bottom wall, and an inner side wall and an outer side wall that protrude upward relative to the bottom wall. The outer side wall is disposed relative to the outer periphery of the inner brush head and is connected to the outer brush head. The inner side wall is connected to the outer rotating shaft.

[0007] As a preference, the inner brush head is snap-connected to the inner adapter, and / or the outer brush head is snap-connected to the outer adapter.

[0008] As a preference, the inner adapter is inserted or threadedly connected to the inner rotating shaft, and the outer adapter is inserted or threadedly connected to the outer rotating shaft.

[0009] As a preference, the driving assembly includes a power module and a transmission module. The power module has an output shaft. The transmission module includes a first gear set, a second gear set and an outer sleeve. The output shaft is connected to the first gear set. The first gear set is connected to the outer sleeve. The outer sleeve is connected to the outer rotating shaft to drive the outer rotating shaft to rotate in the same direction as the output shaft. The first gear set meshes with the second gear set. The second gear set is connected to the inner rotating shaft to drive the inner rotating shaft to rotate in the opposite direction relative to the output shaft.

[0010] As a preference, the second gear set is arranged on a side of the first gear set close to the inner rotating shaft, and both the first gear set and the second gear set are arranged inside the outer sleeve.

[0011] As a preference, a first transmission gear is arranged on a side of the first gear set far from the inner rotating shaft, and a second transmission gear is arranged on a side of the first gear set close to the inner rotating shaft. The outer sleeve is provided with internal teeth meshing with the first transmission gear. The second gear set is provided with a third transmission gear meshing with the second transmission gear.

[0012] As a preference, a bearing or a gasket is arranged between the bottom end of the outer sleeve and the power module, and / or a bearing or a gasket is arranged between the top of the outer sleeve and the inner rotating shaft.

[0013] As a preference, it further includes an end cap and a movable housing. The movable housing is provided with an installation cavity. The driving assembly is arranged in the installation cavity. The end cap is arranged on the top of the outer sleeve and surrounds the outer rotating shaft to block the opening side of the installation cavity.

[0014] To achieve the above object, another technical solution adopted by the present application is: a brush, which applies any one of the above-mentioned brush head assemblies.

[0015] Compared with the prior art, the beneficial effects of the present application are as follows: First, the inner brush head and the outer brush head rotate in opposite directions, which can solve the problem that the traditional unidirectional rotating brush head is displaced due to the friction with the object to be cleaned, and is beneficial to maintaining the stability of the position of the brush head. Further, the inner brush head and the outer brush head rotating in opposite directions can alternately apply frictions in different directions to the stains on the object to be cleaned, which is beneficial to improving the cleaning effect. Description of the Drawings

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the brush in some embodiments of the present application;

[0017] Figure 2 It is an exploded structural schematic diagram of the brush head assembly in some embodiments of the present application;

[0018] Figure 3 Schematic cross-sectional view of the local structure of the brush head assembly with respect to the outer brush head in some embodiments of the present application;

[0019] Figure 4 Exploded schematic view of the local structure of the brush head assembly with respect to the inner brush head in some embodiments of the present application;

[0020] Figure 5 Schematic cross-sectional structure view of the brush head assembly in some embodiments of the present application;

[0021] In the figure: 1. Brush head assembly; 10. Inner brush head; 20. Outer brush head; 30. Outer adapter; 31. Bottom wall; 32. Inner side wall; 33. Outer side wall; 40. Inner adapter; 50. Driving assembly; 51. Transmission module; 511. Inner rotating shaft; 512. Outer rotating shaft; 513. First gear set; 5131. First transmission gear; 5132. Second transmission gear; 514. Second gear set; 5141. Third transmission gear; 515. Outer sleeve; 516. Bearing; 52. Power module; 521. Output shaft; 61. End cap; 62. Movable housing; 71. Fixed housing; 711. Handle; 80. Connection assembly. Detailed implementation manners

[0022] Next, in combination with the detailed implementation manners, the present application will be further described. It should be noted that, on the premise of no conflict, any combination of the following described embodiments or technical features can form a new embodiment.

[0023] In the description of the present application, it should be noted that for orientation terms, such as the terms "center", "horizontal", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the indicated orientation and position relationships are based on the orientation or position relationships shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of the present application.

[0024] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence.

[0025] The terms "comprise" and "have" and any variations thereof in the description and claims of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that comprises a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0026] This application provides a brush, as Figures 1-5 shown, which includes a brush head assembly 1 and a handle 711, and the brush head assembly 1 is mounted on the handle 711. The brush can be used by hand.

[0027] In some embodiments, the brush head assembly 1 is rotatably arranged on the handle 711. By adjusting the different angles of the brush head assembly 1 rotating relative to the handle 711, different usage scenarios can be adapted. Specifically, the brush head assembly 1 may include a movable housing 62, and the movable housing 62 is rotatably connected to a fixed housing 71. A part of the fixed housing 71 forms a handle 711 that is easy to hold. More specifically, a connection assembly 80 adapted to unlock or lock the movable housing 62 is further provided between the fixed housing 71 and the movable housing 62 to achieve rotational unlocking or angular locking of the movable housing 62.

[0028] In order to solve the problem that the position of the brush head shifts during the rotation of the brush head. In some embodiments, the brush head assembly 1 includes an inner brush head 10, an outer brush head 20 and a driving assembly 50. The outer brush head 20 is disposed around the outside of the inner brush head 10. The driving assembly 50 has an inner rotating shaft 511 and an outer rotating shaft 512. The outer rotating shaft 512 is disposed around the outside of the inner rotating shaft 511, and the rotation direction of the outer rotating shaft 512 is opposite to that of the inner rotating shaft 511. The inner rotating shaft 511 is connected to the inner brush head 10, and the outer rotating shaft 512 is connected to the outer brush head 20. First, the rotation directions of the inner brush head 10 and the outer brush head 20 are opposite, which can solve the problem that the traditional single-direction rotating brush head shifts in position due to the friction force with the object to be cleaned, and is beneficial to maintaining the stability of the brush head position. Further, the inner brush head 10 and the outer brush head 20 with opposite rotation directions can also alternately apply friction forces in different directions to the stains on the object to be cleaned, which is beneficial to cleaning stubborn stains and improving the cleaning effect.

[0029] In some embodiments, the inner brush head 10 is detachably connected to the inner adapter 40, the inner adapter 40 is connected to the inner rotating shaft 511, the outer brush head 20 is detachably connected to the outer adapter 30, and the outer adapter 30 is connected to the outer rotating shaft 512. That is to say, the inner brush head 10 and the outer brush head 20 are respectively detachably connected to the inner rotating shaft 511 or the outer rotating shaft 512 of the driving assembly 50 through the adapters, so as to disassemble, assemble and replace the inner brush head 10 or the outer brush head 20.

[0030] In some embodiments, the outer adapter 30 includes an annular bottom wall 31, and an inner side wall 32 and an outer side wall 33 that protrude upward relative to the bottom wall 31. The outer side wall 33 is disposed relative to the outer periphery of the inner brush head 10 and is connected to the outer brush head 20. The inner side wall 32 is connected to the outer rotating shaft 512. First, the outer side wall 33 that protrudes upward is provided on the outer adapter 30, which is conducive to increasing the connection area with the outer brush head 20 and achieving circumferential and axial positioning of the outer brush head 20 at the same time. Further, the outer side wall 33 is disposed relative to the outer periphery of the inner brush head 10, which can provide a relatively stable support for the outer brush head 20 while avoiding the outer adapter 30 from occupying too large a size in the axial direction. The inner side wall 32 protrudes upward relative to the bottom wall 31, that is to say, it increases the axial dimension of the part where the outer adapter 30 is connected to the outer rotating shaft 512, which is conducive to improving the connection stability.

[0031] In some embodiments, the inner adapter 40 is substantially tubular and has a relatively large axial extension distance to increase the connection area with the inner brush head 10 and ensure the connection strength.

[0032] In some embodiments, the inner brush head 10 is snap-connected to the inner adapter 40, and / or the outer brush head 20 is snap-connected to the outer adapter 30. The snap-connection method enables the inner brush head 10 and the outer brush head 20 to be quickly snap-connected to the inner adapter 40 and the outer adapter 30 along the axial direction. As a supplement, the snap-connection can also be replaced with a threaded connection.

[0033] In some embodiments, the inner adapter 40 is inserted or threadedly connected to the inner rotating shaft 511, and the outer adapter 30 is inserted or threadedly connected to the outer rotating shaft 512 for quick disassembly and assembly.

[0034] In some embodiments, the drive assembly 50 includes a power module 52 and a transmission module 51. The power module 52 has an output shaft 521. The transmission module 51 includes a first gear set 513, a second gear set 514, and an outer sleeve 515. The output shaft 521 is connected to the first gear set 513. The first gear set 513 is connected to the outer sleeve 515. The outer sleeve 515 is connected to the outer rotating shaft 512 to drive the outer rotating shaft 512 to rotate in the same direction as the output shaft 521. The first gear set 513 meshes with the second gear set 514, and the second gear set 514 is connected to the inner rotating shaft 511 to drive the inner rotating shaft 511 to rotate in the opposite direction relative to the output shaft 521. Thus, the rotation directions of the inner rotating shaft 511 and the outer rotating shaft 512 are opposite.

[0035] In some embodiments, the second gear set 514 is disposed on the side of the first gear set 513 close to the inner rotating shaft 511, and both the first gear set 513 and the second gear set 514 are disposed inside the outer sleeve 515. The reasonable and compact layout is achieved by staggering the inner and outer settings, and it can also play a role in shielding and protecting the gear set.

[0036] In some embodiments, a first transmission gear 5131 is provided on a side of the first gear set 513 away from the inner rotating shaft 511, and a second transmission gear 5132 is provided on a side of the first gear set 513 close to the inner rotating shaft 511. The outer sleeve 515 is provided with internal teeth meshing with the first transmission gear 5131, and the second gear set 514 is provided with a third transmission gear 5141 meshing with the second transmission gear 5132. As a supplement, when the brush head actually works, the torque for the outer brush head 20 to rotate is relatively large, and the driving power consumption is relatively large. In this application, a plurality of first transmission gears 5131 are provided to jointly drive the outer sleeve 515 to rotate, so as to provide a relatively large driving force for the outer sleeve 515 and prevent the first gear set 513 from deviating from the axis of the brush head assembly 1 due to uneven circumferential force.

[0037] In some embodiments, a bearing 516 or a gasket is provided between the bottom end of the outer sleeve 515 and the power module 52, and / or a bearing 516 or a gasket is provided between the top of the outer sleeve 515 and the inner rotating shaft 511, for reducing the friction between components with different rotation directions and reducing the energy consumption.

[0038] In some embodiments, it further includes an end cap 61 and a movable housing 62. The movable housing 62 is provided with an installation cavity, and the drive assembly 50 is arranged in the installation cavity. The end cap 61 is arranged on the top of the outer sleeve 515 and surrounds the outer rotating shaft 512 to block the opening side of the installation cavity, so as to realize the relatively sealed installation of the drive assembly 50 and improve the safety of the brush.

[0039] The above describes the basic principle, main features and advantages of this application. Those skilled in the art should understand that this application is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of this application. Without departing from the spirit and scope of this application, this application will have various changes and improvements, and these changes and improvements all fall within the scope of this application claimed. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. A brush head assembly, characterized in that: It includes an inner brush head, an outer brush head and a drive assembly. The outer brush head is disposed around the outside of the inner brush head. The drive assembly has an inner rotating shaft and an outer rotating shaft. The outer rotating shaft is disposed around the outside of the inner rotating shaft, and the rotation directions of the outer rotating shaft and the inner rotating shaft are opposite. The inner rotating shaft is connected to the inner brush head, and the outer rotating shaft is connected to the outer brush head.

2. The brush head assembly according to claim 1, wherein: The inner brush head is detachably connected to an inner adapter. The inner adapter is connected to the inner rotating shaft. The outer brush head is detachably connected to an outer adapter. The outer adapter is connected to the outer rotating shaft. The outer adapter includes an annular bottom wall, and an inner side wall and an outer side wall protruding upward relative to the bottom wall. The outer side wall is disposed relative to the outer periphery of the inner brush head and is connected to the outer brush head. The inner side wall is connected to the outer rotating shaft.

3. The brush head assembly according to claim 2, wherein: The inner brush head is snap-connected to the inner adapter, and / or the outer brush head is snap-connected to the outer adapter.

4. The brush head assembly according to claim 2, characterized in that: The inner adapter is inserted or threadedly connected to the inner rotating shaft, and the outer adapter is inserted or threadedly connected to the outer rotating shaft.

5. The brush head assembly according to claim 1, wherein: The drive assembly includes a power module and a transmission module. The power module has an output shaft. The transmission module includes a first gear set, a second gear set and an outer sleeve. The output shaft is connected to the first gear set. The first gear set is connected to the outer sleeve. The outer sleeve is connected to the outer rotating shaft to drive the outer rotating shaft to rotate in the same direction as the output shaft. The first gear set meshes with the second gear set. The second gear set is connected to the inner rotating shaft to drive the inner rotating shaft to rotate reversely relative to the output shaft.

6. The brush head assembly according to claim 5, wherein: The second gear set is disposed on a side of the first gear set close to the inner rotating shaft, and both the first gear set and the second gear set are disposed inside the outer sleeve.

7. The brush head assembly according to claim 5 or 6, characterized in that: A first transmission gear is disposed on a side of the first gear set away from the inner rotating shaft, and a second transmission gear is disposed on a side of the first gear set close to the inner rotating shaft. The outer sleeve is provided with internal teeth meshing with the first transmission gear. The second gear set is provided with a third transmission gear meshing with the second transmission gear.

8. The brush head assembly according to claim 5 or 6, characterized in that: A bearing or a gasket is disposed between the bottom end of the outer sleeve and the power module, and / or a bearing or a gasket is disposed between the top of the outer sleeve and the inner rotating shaft.

9. The brush head assembly according to claim 5 or 6, characterized in that: It further includes an end cap and a movable housing. The movable housing is provided with an installation cavity. The drive assembly is disposed in the installation cavity. The end cap is disposed on the top of the outer sleeve and surrounds the outer rotating shaft to block the opening side of the installation cavity.

10. A brush, characterized in that: Apply the brush head assembly according to any one of claims 1-9.

Images