Support assembly and dust removal duster

Abstract

The utility model discloses a support assembly and a dedusting duster, and belongs to the technical field of dedusting dusters, the support assembly comprises a connector, and the connector is provided with a mounting hole; the cleaning piece is rotatably connected with the connector, and a first locking part is arranged on the cleaning piece; the locking piece is movably arranged in the mounting hole, the locking piece is provided with a second locking part, and the second locking part can selectively move to be matched with the first locking part so as to fix the cleaning piece and the connector. According to the support assembly designed by the utility model, the locking piece moves to selectively enable the first locking part to be matched with the second locking part, so that the rotation angle of the cleaning piece relative to the connector is controlled, and a user can adjust the angle of the cleaning piece according to different objects to be cleaned; and the user can keep the cleaning piece rotating relative to the connector when cleaning the to-be-cleaned object, the cleaning support is good in flexibility, cleaning work is facilitated, and the cleaning efficiency of the to-be-cleaned object is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of dust removal brushes, and particularly relates to a bracket assembly and a dust removal brush. Background Art

[0002] In related technologies, as one of the commonly used cleaning tools at home, a dust removal brush is usually used for dust removal of objects. In the prior art, the cleaning part of the dust removal brush is in the same extending direction as the cleaning rod. When it is applied to clean specific objects (such as a wardrobe or a refrigerator, etc.), the user needs to climb up and down, resulting in inconvenient cleaning work for the user and low cleaning efficiency for the object to be cleaned, thus causing complaints from the user. Content of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, an object of the utility model is to provide a bracket assembly. According to the bracket assembly designed by the utility model, the locking member moves to selectively engage the first locking portion with the second locking portion, thereby realizing the control of the rotation angle of the cleaning piece relative to the connecting head. The user can adjust the angle of the cleaning piece for different objects to be cleaned, and the user can also keep the cleaning piece rotating relative to the connecting head when cleaning the object to be cleaned. The cleaning bracket has good flexibility, which facilitates the cleaning work and improves the cleaning efficiency of the object to be cleaned.

[0004] The utility model also provides a dust removal brush having the above bracket assembly.

[0005] To achieve the above object, the utility model provides the following technical solutions:

[0006] The utility model provides a bracket assembly, including: a connecting head provided with a mounting hole; a cleaning piece rotatably connected to the connecting head, and a first locking portion is arranged on the cleaning piece; a locking member movably arranged in the mounting hole, the locking member has a second locking portion, and the second locking portion selectively moves to cooperate with the first locking portion to fix the cleaning piece to the connecting head, thereby controlling the rotation angle of the cleaning piece relative to the connecting head.

[0007] According to the bracket assembly of the utility model, by arranging a locking member on the connecting head, the locking member moves to selectively engage the first locking portion with the second locking portion, thereby realizing the control of the rotation angle of the cleaning piece relative to the connecting head. The cleaning bracket of the present application has good flexibility. The user can adjust the angle of the cleaning piece for different objects to be cleaned, improving the cleaning efficiency of the object to be cleaned. At the same time, the user can also keep the cleaning piece rotating relative to the connecting head when cleaning the object to be cleaned. At this time, the cleaning piece has higher flexibility, which can further improve the cleaning efficiency of the object to be cleaned.

[0008] Further, one of the first locking portion and the second locking portion is configured as a locking block, and the other of the first locking portion and the second locking portion is configured as a plurality of locking grooves spaced circumferentially. The locking block is received in the corresponding locking groove to fix the cleaning sheet and the connector head.

[0009] Further, the locking member includes: a connecting rod movably disposed in the mounting hole; a locking block disposed on at least a part of the outer peripheral wall of the connecting rod; wherein the cleaning sheet is provided with a rotation hole, at least a part of the connecting rod is movably disposed in the rotation hole, the cleaning sheet is provided with a plurality of the locking grooves, and the plurality of locking grooves communicate with the rotation hole. The connecting rod can selectively move axially to receive the locking block in the corresponding locking groove.

[0010] Further, the connecting rod includes: a first split portion; a second split portion disposed at one axial end of the first split portion, and the locking block is disposed on the second split portion; wherein the locking block gradually decreases in thickness in the direction towards the first split portion.

[0011] Further, the connector head is provided with a sliding groove extending axially and communicating with the mounting hole, and at least a part of the locking block is movably received in the sliding groove.

[0012] Further, a limiting block is provided on the inner peripheral wall of the mounting hole, a channel axially penetrating is provided in the connecting rod, and the connecting rod is further provided with a through hole communicating with the channel. The connecting rod further includes: a deformation strip, both ends of the deformation strip are respectively connected to the two axial ends of the through hole, and the deformation strip is provided with a first limiting groove and a second limiting groove spaced axially and adapted to receive the limiting block; wherein the projection of the first limiting groove in the radial direction is located within the locking block, and the projection of the second limiting groove in the radial direction is staggered with the locking block.

[0013] Further, the wall thickness of the groove wall of the first limiting groove gradually increases in the direction towards the second limiting groove; the wall thickness of the groove wall of the second limiting groove gradually increases in the direction towards the first limiting groove.

[0014] Further, one end of the connecting rod is provided with a first end cover, the other end of the connecting rod is provided with a first clamping portion, and the locking member further includes: a second end cover provided with a second clamping portion, and the second clamping portion is in clamping fit with the first clamping portion.

[0015] Further, the first clamping portion is configured as a clamping hole communicating with the through hole, and the second clamping portion is configured as a clamping block. The clamping block is received in the clamping hole to connect the second end cover to the connecting rod.

[0016] The dust duster according to the present invention will be briefly described below.

[0017] The dust duster according to the present invention includes the bracket assembly described in any one of the above embodiments. Since the dust duster according to the present invention is provided with the bracket assembly of the above embodiment, the dust duster has good flexibility, so that the dust duster can be applied to the cleaning of different objects and has high cleaning efficiency for different objects.

[0018] Other advantages, objectives and features of the present invention will be described in the subsequent specification, and to some extent will be obvious to those skilled in the art, or those skilled in the art can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be achieved and obtained through the following specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to make the objectives, technical solutions and beneficial effects of the present invention clearer, the present invention provides the following drawings for description:

[0020] Figure 1 is a schematic structural view of the bracket assembly of the present invention;

[0021] Figure 2 is a schematic structural view of the cleaning sheet of the present invention;

[0022] Figure 3 is a schematic structural view of the connector of the present invention;

[0023] Figure 4 is a schematic connection view of the cleaning sheet, the locking member and the connector of the present invention;

[0024] Figure 5 is a schematic cooperation view of the cleaning sheet and the locking member of the present invention;

[0025] Figure 6 is a schematic structural view of the locking member of the present invention;

[0026] Figure 7 is a schematic connection view of the connecting rod and the first end cover of the present invention.

[0027] The reference numerals in the drawings are as follows:

[0028] 1. Bracket assembly;

[0029] 10. Connector; 11. Mounting hole; 12. Chute; 13. Limiting block;

[0030] 20. Cleaning sheet; 21. Rotating block; 211. Rotating hole; 212. Locking groove;

[0031] 30. Locking member; 31. Connecting rod; 311. First split part; 312. Second split part; 313. Deformation strip; 3131. First limiting groove; 3132. Second limiting groove; 314. Clamping hole; 32. Locking block; 33. First end cover; 34. Second end cover. Detailed implementation manner

[0032] In order to make the purpose, technical solution and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below in combination with embodiments and drawings. The illustrative embodiments and descriptions thereof of the present utility model are only used to explain the present utility model and do not limit the present utility model.

[0033] In the following description, a large number of specific details are set forth in order to provide a thorough understanding of the present utility model. However, it is obvious to those of ordinary skill in the art that: it is not necessary to adopt these specific details to implement the present utility model. In other instances, well-known structures, circuits, materials or methods are not specifically described in order to avoid obscuring the present utility model.

[0034] Throughout the specification, the mention of "one embodiment", "embodiment", "one example" or "example" means that: the specific features, structures or characteristics described in connection with the embodiment or example are included in at least one embodiment of the present utility model. Therefore, the phrases "one embodiment", "embodiment", "one example" or "example" appearing throughout the specification do not necessarily all refer to the same embodiment or example. In addition, specific features, structures or characteristics can be combined in any appropriate combination and / or sub-combination in one or more embodiments or examples. In addition, those of ordinary skill in the art should understand that the drawings provided herein are for illustrative purposes only and the drawings are not necessarily drawn to scale. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0035] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "front", "rear", "left", "right", "upper", "lower", "vertical", "horizontal", "high", "low", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model 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 therefore should not be construed as limiting the protection scope of the present utility model.

[0036] Embodiment 1:

[0037] As Figures 1 - 7 shown, the present utility model provides a bracket assembly 1, comprising: a connection head 10, a cleaning sheet 20 and a locking member 30. The connection head 10 is provided with a mounting hole 11. The cleaning sheet 20 is rotatably connected to the connection head 10. The cleaning sheet 20 is provided with a first locking portion. The locking member 30 is movably disposed in the mounting hole 11. The locking member 30 has a second locking portion. The second locking portion is selectively movable to cooperate with the first locking portion to fix the cleaning sheet 20 to the connection head 10, thereby controlling the rotation angle of the cleaning sheet 20 relative to the connection head 10.

[0038] In some embodiments, the connection head 10 comprises: a mounting rod and at least one connecting ear. The mounting rod is adapted to be connected to a cleaning rod. One end of each of the at least one connecting ear on the same side is respectively connected to the mounting rod. The at least one connecting ear is respectively rotatably connected to the cleaning sheet 20. The cleaning sheet 20 is provided with a first locking portion. The locking member 30 is movably disposed in the mounting hole 11. The locking member 30 is provided with a second locking portion. The locking member 30 moves to selectively move the second locking portion. The second locking portion moves to selectively cooperate with the first locking portion. The cooperation between the first locking portion and the second locking portion can fix the cleaning sheet 20 to the connecting ear.

[0039] It is worth mentioning that the number of connecting ears can be 1, 2, 3 or other numbers, which is not limited herein. Preferably, when the number of connecting ears is at least two, the at least two connecting ears are spaced apart from each other. A rotating block 21 can be provided on the cleaning sheet 20. The rotating block 21 is rotatably disposed between the at least two connecting ears.

[0040] It can be understood that when the first locking portion does not cooperate with the second locking portion, the cleaning sheet 20 can rotate relative to the connecting ear. When the cleaning sheet 20 rotates to a certain angle, the locking member 30 moves to make the first locking portion cooperate with the second locking portion, thereby fixing the cleaning sheet 20 to the connecting ear, and further fixing the cleaning sheet 20 to the said angle, realizing the flexible rotation and fixation of the cleaning sheet 20. The user can use the cleaning sheet 20 at different angles to clean an object, improving the cleaning efficiency.

[0041] For example, after decoration, there is a visible gap between the ceiling plate and the ceiling joist in the room. When using the cleaning bracket 1 of the present application, the user can rotate the cleaning sheet 20 relative to the connection head 10 to a certain angle and fix it. At this time, the shape of the cleaning bracket 1 is similar to a "T" or "L" shape, so that the user can use the cleaning sheet 20 to clean the visible gap. Of course, for example, the tops of higher household appliances or higher furniture (such as wardrobes and washing machines, etc.) can also be cleaned in the above manner, avoiding the user climbing up and down, and improving the cleaning efficiency of the user.

[0042] Meanwhile, when cleaning a wall surface or the like, the user can selectively fix the cleaning sheet 20 to the connector 10. When the cleaning sheet 20 is fixed relative to the connector 10, the cleaning ability of the cleaning sheet 20 for the wall surface is good, and it can be used for cleaning relatively dirty wall surfaces or the like; when the cleaning sheet 20 is rotatable relative to the connector 10, the user can control the rotation angle of the cleaning sheet 20 on the wall surface to achieve flexible cleaning of the wall surface, and can improve the cleaning efficiency of the wall surface or the like. It is applicable to the cleaning work of wall surfaces with a certain amount of dust or the like.

[0043] According to the bracket assembly 1 of the present utility model, by providing a locking member 30 on the connector 10, the locking member 30 moves to selectively engage the first locking portion with the second locking portion, thereby realizing the control of the rotation angle of the cleaning sheet 20 relative to the connector 10. The cleaning bracket 1 of the present application has good flexibility. The user can adjust the angle of the cleaning sheet 20 according to different objects to be cleaned, improving the cleaning efficiency of the objects to be cleaned. At the same time, the user can also keep the cleaning sheet 20 rotating relative to the connector 10 when cleaning the objects to be cleaned. At this time, the cleaning sheet 20 has higher flexibility and can further improve the cleaning efficiency of the objects to be cleaned.

[0044] Embodiment Two:

[0045] Based on Embodiment One, in this embodiment, one of the first locking portion and the second locking portion is configured as a locking block 32, and the other of the first locking portion and the second locking portion is configured as a plurality of locking grooves 212 spaced circumferentially. The locking block 32 is received in the corresponding locking groove 212 to fix the cleaning sheet 20 to the connector 10.

[0046] In some embodiments, the first locking portion is configured as a locking block 32, and the second locking portion is configured as locking grooves 212. The locking grooves 212 are configured as a plurality spaced circumferentially along the mounting hole 11. At this time, the cleaning sheet 20 is provided with a locking block 32. When the cleaning sheet 20 rotates relative to the connector 10 to a certain angle, the locking member 30 moves to move the locking grooves 212 so as to receive the locking block 32 in the corresponding locking groove 212, thereby realizing the fixation of the cleaning sheet 20 to the connector 10.

[0047] In other embodiments, the first locking portion is configured as locking grooves 212, and the second locking portion is configured as a locking block 32. The locking grooves 212 are configured as a plurality spaced circumferentially along the mounting hole 11. At this time, the cleaning sheet 20 is provided with locking grooves 212. When the cleaning sheet 20 rotates relative to the connector 10 to a certain angle, the locking member 30 moves to move the locking block 32, and the locking block 32 moves and is received in the corresponding locking groove 212, thereby realizing the fixation of the cleaning sheet 20 to the connector 10. There is no limitation here.

[0048] It is worth mentioning that the locking block 32 being received in different locking grooves 212 can fix the cleaning sheet 20 at different angles. For example, the angle of the cleaning sheet 20 relative to the connector 10 can be fixed to 15°, 30°, 45°, and more angles. By controlling the number of the locking grooves 212, this can be achieved. The structure and principle of the bracket assembly 1 are simple, which facilitates the production of the bracket assembly 1.

[0049] Of course, the number of the locking blocks 32 can be 1, 2, or other numbers, and there is no limitation here.

[0050] Embodiment Three:

[0051] Based on Embodiment Two, in this embodiment, the locking member 30 includes: a connecting rod 31 and a locking block 32. The connecting rod 31 is movably disposed in the mounting hole 11, and the locking block 32 is disposed on at least a part of the outer peripheral wall of the connecting rod 31. Wherein, the cleaning sheet 20 is provided with a rotating hole 211, at least a part of the connecting rod 31 is movably disposed in the rotating hole 211, the cleaning sheet 20 is provided with a plurality of locking grooves 212, and the plurality of locking grooves 212 communicate with the rotating hole 211. The connecting rod 31 can selectively move axially to receive the locking block 32 in the corresponding locking groove 212.

[0052] In some embodiments, the connecting rod 31 is movably disposed in the mounting hole 11, and at least a part of the outer peripheral wall of the connecting rod 31 is provided with the locking block 32. The cleaning sheet 20 is provided with a rotating block 21, the rotating block 21 is provided with a rotating hole 211, and the rotating block 21 is rotatably sleeved on at least a part of the outer periphery of the connecting rod 31 through the rotating hole 211. The rotating block 21 is provided with a plurality of rotating grooves, and the plurality of rotating grooves communicate with the rotating hole 211 respectively. Thus, when the cleaning sheet 20 rotates relative to the connector 10 to a certain angle, the connecting rod 31 moves and drives the locking block 32 to move towards the locking groove 212, so that the locking block 32 is received in the corresponding locking groove 212, thereby realizing the fixation of the cleaning sheet 20 relative to the connector 10. It is worth noting that the extending directions of the locking block 32, the connecting rod 31, the mounting hole 11, and the rotating hole 211 are all parallel.

[0053] Embodiment Four:

[0054] Based on Embodiment Three, in this embodiment, the connecting rod 31 includes: a first split part 311 and a second split part 312. The second split part 312 is disposed at one axial end of the first split part 311, and the locking block 32 is disposed on the second split part 312. Wherein, the thickness of the locking block 32 gradually decreases in the direction towards the first split part 311.

[0055] It can be understood that the first split part 311 and the second split part 312 are axially connected. The first split part 311 and the second split part 312 can be fused or welded, etc., which is not limited here. A locking block 32 is provided on the outer peripheral wall of the second split part 312. When the first split part 311 is received in the rotation hole 211, the cleaning piece 20 can rotate relative to the connecting head 10. When the second split part 312 is received in the rotation hole 211, the locking block 32 is received in the locking groove 212 to fix the cleaning piece 20 and the connecting head 10.

[0056] It is worth noting that the locking block 32 has a thickness in the circumferential direction. The thickness of the locking block 32 gradually decreases in the direction towards the first split part 311, so that a guiding part is formed at the end of the locking block 32 towards the first split part 311, which facilitates the reception of the locking block 32 in the locking groove 212, makes the cooperation between the locking block 32 and the locking groove 212 easier, facilitates the operation of the cleaning bracket 1, and improves the user's convenience of use.

[0057] Preferably, the locking block 32 has a central line in the circumferential direction. The two ends of the end of the locking block 32 towards the first split part 311 extend towards the central line respectively. Thus, when the locking block 32 moves towards the locking groove 212, the two sides of the end of the locking block 32 towards the first split part 311 can be guided respectively, which further facilitates the cooperation between the locking block 32 and the locking groove 212.

[0058] According to some embodiments of the present invention, the connecting head 10 is provided with a sliding groove 12 extending axially and communicating with the mounting hole 11. At least part of the locking block 32 is movably received in the sliding groove 12. It can be understood that the inner peripheral wall of the mounting hole 11 is provided with a sliding groove 12 extending axially. The sliding groove 12 extends radially away from the connecting rod 31. The locking block 32 is movably received in the sliding groove 12. Thus, the sliding groove 12 can limit the movement of the locking block 32, making the movement of the locking block 32 more stable, and further making the cooperation between the locking block 32 and the locking groove 212 more stable, improving the working stability of the cleaning bracket 1.

[0059] Embodiment Five:

[0060] Based on Embodiment Three, a limiting block 13 is provided on the inner peripheral wall of the mounting hole 11. A channel extending axially is provided in the connecting rod 31. The connecting rod 31 is also provided with a through hole communicating with the channel. The connecting rod 31 further includes: a deformation strip 313. The two ends of the deformation strip 313 are respectively connected to the two ends of the through hole in the axial direction. The deformation strip 313 is provided with a first limiting groove 3131 and a second limiting groove 3132 which are axially spaced and adapted to receive the limiting block 13. The projection of the first limiting groove 3131 in the radial direction is located within the locking block 32, and the projection of the second limiting groove 3132 in the radial direction is staggeredly arranged with the locking block 32.

[0061] In some embodiments, a first through hole and a second through hole are respectively provided on the first split part 311 and the second split part 312. The first through hole and the second through hole communicate with each other to form the channel. A first hole section and a second hole section are respectively provided on the first split part 311 and the second split part 312. The first hole section and the second hole section communicate with each other to jointly form the through hole. The inner walls of the first hole section and the second hole section facing each other are respectively connected to both ends of the deformation strip 313. The surface of the deformation strip 313 is provided with a first limiting groove 3131 and a second limiting groove 3132. The projection of the first limiting groove 3131 in the radial direction is located within the first hole section, and the projection of the second limiting groove 3132 in the radial direction is located within the second hole section.

[0062] A limiting block 13 extending radially toward the connecting rod 31 is provided on the inner peripheral wall of the mounting hole 11. When the connecting rod 31 moves, the deformation strip 313 can be selectively deformed to allow the limiting block 13 to be received in the first limiting groove 3131 or the second limiting groove 3132, so as to fix the connecting rod 31 at the first position and the second position. When in the first position, the limiting block 13 is received in the first limiting groove 3131. At this time, the first split part 311 is located within the rotation hole 211, and the cleaning piece 20 can rotate relative to the connecting head 10. When in the second position, the limiting block 13 is received in the second limiting groove 3132. At this time, the second split part 312 is located within the rotation hole 211, and the cleaning piece 20 is fixed relative to the connecting head 10.

[0063] Thus, through the above settings, it can be ensured that the connecting rod 31 can be stably fixed at the first position and the second position, thereby preventing the locking block 32 from moving into the locking groove 212 when adjusting the angle of the cleaning piece 20, and at the same time preventing the locking block 32 from moving out of the locking groove 212 when the cleaning piece 20 is fixed relative to the connecting head 10, improving the working stability of the cleaning bracket 1.

[0064] According to some embodiments of the present invention, the wall thickness of the groove wall of the first limiting groove 3131 gradually increases in the direction facing the second limiting groove 3132; the wall thickness of the groove wall of the second limiting groove 3132 gradually increases in the direction facing the first limiting groove 3131. Thus, through the above settings, the groove wall of the first limiting groove 3131 facing the second limiting groove 3132 is configured as a first guiding wall, and the groove wall of the second limiting groove 3132 facing the first limiting groove 3131 is configured as a second guiding wall. The first guiding wall can facilitate the movement of the limiting block 13 toward the second limiting groove 3132, and the second guiding wall can facilitate the movement of the limiting block 13 toward the first limiting groove 3131, improving the usability of the bracket assembly 1.

[0065] Embodiment Six:

[0066] Based on Embodiment Five, in this embodiment, one end of the connecting rod 31 is provided with a first end cap 33, and the other end of the connecting rod 31 is provided with a first clamping portion. The locking member 30 further includes: a second end cap 34, the second end cap 34 is provided with a second clamping portion, and the second clamping portion is in clamping cooperation with the first clamping portion.

[0067] It can be understood that the cooperation of the first end cap 33 and the second end cap 34 can limit the connecting rod 31 within the mounting hole 11, prevent the connecting rod 31 from detaching from the mounting hole 11, and improve the structural stability of the bracket assembly 1. At the same time, the connecting rod 31 is provided with a first clamping portion, and the second end cap 34 is provided with a second clamping portion. The first clamping portion and the second clamping portion are in clamping cooperation to fix the second end cap 34 and the connecting rod 31. The cooperation method between the connecting rod 31 and the second end cap 34 is simple, making the disassembly and assembly of the connecting rod 31 and the second end cap 34 more convenient, and improving the disassembly and assembly convenience of the bracket assembly 1.

[0068] In some embodiments of the present invention, the first clamping portion is configured as a clamping hole 314 communicating with the through hole, and the second clamping portion is configured as a clamping block. The clamping block is received in the clamping hole 314 to connect the second end cap 34 and the connecting rod 31. In some embodiments, the connecting rod 31 is provided with a clamping hole 314, the clamping hole 314 communicates with the channel, one end of the second end cap 34 facing the connecting rod 31 is provided with a connecting pipe, and the free end of the connecting pipe is provided with a clamping block. When the connecting rod 31 and the second end cap 34 are in cooperation, the connecting pipe is received in the channel and the clamping block is received in the clamping hole 314. The cooperation relationship between the second end cap 34 and the connecting rod 31 is simple and easy to achieve, improving the disassembly and assembly convenience of the connecting rod 31 and the second end cap 34.

[0069] Embodiment Seven:

[0070] The present invention provides a dust duster, and the dust duster includes the bracket assembly 1 described in any one of the above embodiments. Since the dust duster according to the present invention is provided with the bracket assembly 1 of the above embodiments, the dust duster has good flexibility, so that the dust duster can be applied to the cleaning of different objects and has a high cleaning efficiency for different objects.

[0071] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A bracket assembly, characterized in that: include: A connector (10), wherein the connector (10) is provided with a mounting hole (11); A cleaning sheet (20), the cleaning sheet (20) being rotatably connected to the connecting head (10), and the cleaning sheet (20) being provided with a first locking portion; A locking member (30), wherein the locking member (30) is movably disposed in the mounting hole (11), and the locking member (30) has a second locking portion, and the second locking portion can be selectively moved to cooperate with the first locking portion to fix the cleaning sheet (20) to the connecting head (10), thereby controlling the rotation angle of the cleaning sheet (20) relative to the connecting head (10).

2. The bracket assembly according to claim 1, characterized in that: One of the first locking portion and the second locking portion is configured as a locking block (32), and the other of the first locking portion and the second locking portion is configured as a plurality of locking grooves (212) spaced apart in the circumferential direction, wherein the locking block (32) is received in the corresponding locking groove (212) to fix the cleaning sheet (20) and the connecting head (10).

3. The bracket assembly according to claim 2, characterized in that: The locking member (30) comprises: A connecting rod (31), wherein the connecting rod (31) is movably disposed in the mounting hole (11); A locking block (32), wherein the locking block (32) is arranged on at least a portion of the outer peripheral wall of the connecting rod (31); The cleaning sheet (20) is provided with a rotating hole (211), at least a portion of the connecting rod (31) is movably arranged in the rotating hole (211), the cleaning sheet (20) is provided with a plurality of locking grooves (212), and the plurality of locking grooves (212) are all connected to the rotating hole (211), and the connecting rod (31) can be selectively moved axially to accommodate the locking block (32) in the corresponding locking groove (212).

4. The bracket assembly according to claim 3, characterized in that: The connecting rod (31) comprises: A first sub-body portion (311); A second split part (312), wherein the second split part (312) is arranged at one end of the first split part (311) in the axial direction, and the locking block (32) is arranged on the second split part (312); wherein The locking block (32) gradually decreases in thickness in a direction toward the first split portion (311).

5. The bracket assembly according to claim 4, characterized in that: The connecting head (10) is provided with a slide groove (12) extending in the axial direction and communicating with the mounting hole (11), and at least a portion of the locking block (32) is movably accommodated in the slide groove (12).

6. The bracket assembly according to claim 3, characterized in that: The inner peripheral wall of the mounting hole (11) is provided with a limit block (13); the connecting rod (31) is provided with a channel penetrating in the axial direction; the connecting rod (31) is also provided with a through hole communicating with the channel; the connecting rod (31) further comprises: a deformation strip (313); two ends of the deformation strip (313) are respectively connected to two ends of the through hole in the axial direction; the deformation strip (313) is provided with a first limit groove (3131) and a second limit groove (3132) spaced apart in the axial direction and suitable for accommodating the limit block (13); wherein The radial projection of the first limiting groove (3131) is located inside the locking block (32), and the radial projection of the second limiting groove (3132) and the locking block (32) are arranged alternately with each other.

7. The bracket assembly according to claim 6, characterized in that: The wall thickness of the groove wall of the first limiting groove (3131) gradually increases in the direction toward the second limiting groove (3132); and the wall thickness of the groove wall of the second limiting groove (3132) gradually increases in the direction toward the first limiting groove (3131).

8. The bracket assembly according to claim 6, characterized in that: A first end cover (33) is provided at one end of the connecting rod (31), a first clamping portion is provided at the other end of the connecting rod (31), and the locking member (30) further comprises: A second end cover (34), wherein the second end cover (34) is provided with a second clamping portion, and the second clamping portion is clamped and matched with the first clamping portion.

9. The bracket assembly according to claim 8, characterized in that: The first clamping portion is configured as a clamping hole (314) connected to the through hole, and the second clamping portion is configured as a clamping block, and the clamping block is received in the clamping hole (314) to connect the second end cover (34) to the connecting rod (31).

10. A dust duster, characterized in that: It comprises the support assembly (1) as claimed in any one of claims 1 to 9.

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