CN210383071U

CN210383071U - Cleaning brush

Info

Publication number: CN210383071U
Application number: CN201921395497.6U
Authority: CN
Inventors: 苏秀敏
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-09-06
Filing date: 2019-08-26
Publication date: 2020-04-24
Anticipated expiration: 2029-08-26

Abstract

The application discloses cleaning brush, including brush head and the brush holder of adjustable length, the brush holder includes first armed lever and second armed lever, and the second armed lever is connected with first armed lever relative movement ground, moves for first armed lever through the axis direction that makes the second armed lever follow first armed lever, realizes the regulation to brush holder length. Be provided with the locking structure between first armed lever and second armed lever, adjust the locking structure to the unblock state, can make second armed lever and first armed lever relative movement to adjust brush holder length, adjust the locking structure to the locking state, can restrict the relative movement between second armed lever and the first armed lever, thereby fix brush holder length. Due to the arrangement, the length of the brush handle of the cleaning brush can be adjusted according to actual use requirements, so that the cleaning brush is suitable for short-distance cleaning and long-distance cleaning, and is convenient to operate; when not in use, the length of the brush handle can be adjusted to be shortest, so as to reduce the occupied space and facilitate the storage.

Description

Cleaning brush

Technical Field

The utility model relates to a burnisher technical field especially relates to a cleaning brush.

Background

The cleaning brush is a tool for removing dirt and is made of hair, palm, plastic wires, metal wires and the like, the existing cleaning brushes are quite large in variety, but the lengths of brush handles of a plurality of cleaning brushes are fixed and cannot be adjusted, and the cleaning brushes cannot meet the cleaning requirements of various distances. The brush handle of the cleaning brush is designed to be a long brush handle, so that the occupied space is increased in the daily use process, and the cleaning brush is not suitable for short-distance cleaning; the brush handle of the cleaning brush is designed to be a short brush handle, which is inconvenient for cleaning the dirt at a distance.

Therefore, how to solve the problem that the length of the brush holder of the existing cleaning brush is fixed and cannot be adjusted according to the actual use condition becomes an important technical problem to be solved by technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

To overcome the problems in the related art at least to some extent, the present application provides a cleaning brush which can solve the problems of the prior cleaning brush that the length of the brush holder is fixed and the length of the brush holder cannot be adjusted according to the actual use condition.

The utility model discloses a realize like this: a cleaning brush comprises a brush head and a brush handle with adjustable length, wherein the brush handle comprises a first arm rod and a second arm rod, the axis of the first arm rod is parallel to the axis of the second arm rod, the first end of the first arm rod is fixedly connected with the brush head, the second arm rod is movably connected with the first arm rod relatively, the moving direction of the second arm rod relative to the first arm rod is parallel to the axis of the first arm rod, a locking structure is arranged between the first arm rod and the second arm rod, and when the locking structure is in a first state, the second arm rod can reciprocate relative to the first arm rod along the axial direction of the first arm rod; when the locking structure is in the second state, the locking structure limits relative movement between the second arm lever and the first arm lever.

Preferably, the second armed lever is a hollow pipe body, the second end of the first armed lever extends into the inside of the second armed lever, the locking structure comprises a plurality of positioning holes arranged on the first armed lever, a first through hole arranged on the second armed lever and a clamping block capable of being embedded in the positioning holes and the first through hole, and the plurality of positioning holes are uniformly distributed along the axial direction of the first armed lever.

Preferably, the fixture block is far away from one end of the axis of the first arm rod is provided with a button in an extending mode, the button is fixedly connected with the fixture block in an integrated structure, the middle of the button is rotatably connected with the outer side wall of the second arm rod, an elastic part is arranged between one end of the button, far away from the fixture block, and the elastic part recovers deformation and enables the fixture block to be clamped in the positioning hole after the end of the stress of one end of the button, far away from the fixture block, is close to the axis of the second arm rod.

Preferably, the brush head comprises a bristle base and bristles detachably connected to one side of the bristle base, and the first end of the first arm rod is detachably connected to one side, far away from the bristles, of the bristle base.

Preferably, one side of the bristle seat away from the bristles is provided with a supporting seat used for being connected with the first arm rod, the supporting seat is provided with a blind hole for the first end of the first arm rod to extend into, the side wall of the blind hole is provided with a communicating part, the inside of the blind hole is communicated with a second through hole outside the supporting seat, the outer side wall of the first end of the first arm rod is provided with an elastic sheet, the first end of the elastic sheet is fixedly connected with the first arm rod, the second end of the elastic sheet is larger than the distance between the first end of the elastic sheet and the axis of the first arm rod, and the side of the elastic sheet, which is away from the second end of the elastic sheet, is provided with a convex block which can be clamped in the inside of the second through hole.

Preferably, the number of the second through holes and the number of the elastic pieces are two, the two second through holes are symmetrically arranged around the axis of the first arm rod, and the two elastic pieces are symmetrically arranged around the axis of the first arm rod.

Preferably, the first arm lever is a hollow pipe body.

Preferably, the outer side wall of the first arm rod is provided with a sliding groove extending along the axial direction of the first arm rod, the inner side wall of the second arm rod is provided with a protrusion, and the protrusion can be embedded in the sliding groove and can reciprocate along the length direction of the sliding groove.

Preferably, one end, far away from the brush head, of the second arm rod is provided with an anti-slip sleeve, and the anti-slip sleeve is made of foam.

Preferably, the first arm lever with the material of second arm lever is the aluminum alloy material, the material of brush hair is the snow fine hair silk thread, the brush hair seat with the material of supporting seat is ABS plastics.

The technical scheme provided by the application comprises the following beneficial effects:

the application provides a pair of cleaning brush, brush holder with adjustable including brush head and length, wherein, the brush holder includes first armed lever and second armed lever, the axis of first armed lever and the axis of second armed lever are parallel, the first end and the brush head fixed connection of first armed lever, the second armed lever is connected with first armed lever relative movement ground, the second armed lever is parallel with the axis of first armed lever for the moving direction of first armed lever, move for first armed lever through the axis direction that makes the second armed lever follow first armed lever, adjust the length of first armed lever and the mutual overlap portion of second armed lever, thereby realize the regulation to brush holder length. A locking structure is arranged between the first arm lever and the second arm lever, and when the locking structure is in a first state, namely an unlocking state, the second arm lever can move in a reciprocating manner relative to the first arm lever along the axial direction of the first arm lever; when the locking structure is in the second state, i.e., the locked state, the locking structure restricts relative movement between the second arm and the first arm. Like this, when the length of brush holder is adjusted to needs, only need control locking structure to be in the unblock state, make second armed lever and first armed lever relative movement, alright realize the regulation of brush holder length, when the brush holder length need not be adjusted, adjust locking structure to the locking state, can not relative movement between second armed lever and the first armed lever, and then make brush holder length fixed. Due to the arrangement, the length of the brush handle of the cleaning brush can be adjusted according to actual use requirements, so that the cleaning brush is suitable for short-distance cleaning and long-distance cleaning, and is convenient to operate; when the cleaning brush is not used, the length of the brush handle of the cleaning brush can be adjusted to be the shortest, so that the occupied space is reduced, and the cleaning brush is convenient to store.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a cleaning brush according to an embodiment of the present invention;

FIG. 2 is a side view of a cleaning brush according to an embodiment of the present invention;

FIG. 3 is a top view of a cleaning brush according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a locking structure shown in the embodiment of the present invention;

fig. 5 is a schematic view of a connection structure between the first arm and the support base according to an embodiment of the present invention;

fig. 6 is a schematic cross-sectional view of the first arm and the second arm according to an embodiment of the present invention.

Reference numerals:

a brush handle-1; a first arm-2; a second arm-3; positioning hole-4; a first through-hole-5; a fixture block-6; button-7; an elastic member-8; a bristle holder-9; a support seat-10; a blind hole-11; a second through hole-12; a spring sheet-13; bump-14; a chute-15; -16 a projection; a fixed sleeve-17.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The purpose of this embodiment is to provide a cleaning brush, the brush holder design through with this cleaning brush is two segmentations, including first armed lever and second armed lever to make and can relative movement between second armed lever and the first armed lever, realize the regulation to brush holder length, conveniently clean, and be convenient for accomodate.

Hereinafter, embodiments will be described with reference to the drawings. The embodiments described below do not limit the scope of the invention described in the claims. Further, the entire contents of the configurations shown in the following embodiments are not limited to those necessary as a solution of the invention described in the claims.

Referring to FIGS. 1-6, schematic structural views of a cleaning brush in some exemplary embodiments are shown. The embodiment provides a cleaning brush, brush holder 1 with adjustable including brush head and length, wherein, brush holder 1 includes first armed lever 2 and second armed lever 3, the axis of first armed lever 2 is parallel with the axis of second armed lever 3, the first end and the brush head fixed connection of first armed lever 2, second armed lever 3 is connected with first armed lever 2 relatively movable, second armed lever 3 is parallel with the axis of first armed lever 2 for the direction of movement of first armed lever 2, through making second armed lever 3 move for first armed lever 2 along the direction of the axis of first armed lever 2, adjust the length of the mutual overlap portion of first armed lever 2 and second armed lever 3, thereby realize the regulation to brush holder 1 length. A locking structure is arranged between the first arm lever 2 and the second arm lever 3, and when the locking structure is in a first state, namely an unlocking state, the second arm lever 3 can move in a reciprocating manner relative to the first arm lever 2 along the axial direction of the first arm lever 2; when the locking structure is in the second state, i.e., the locked state, the locking structure restricts relative movement between the second arm 3 and the first arm 2. Like this, when the length of brush holder 1 is adjusted to needs, only need control the locking structure and be in the unblock state, make second armed lever 3 and first armed lever 2 relative movement, alright realize the regulation of 1 length of brush holder, when need not adjust brush holder 1 length, adjust the locking structure to the locking state, can not relative movement between second armed lever 3 and the first armed lever 2, and then make brush holder 1 length fixed. Due to the arrangement, the length of the brush handle 1 of the cleaning brush can be adjusted according to actual use requirements, so that the cleaning brush is suitable for short-distance cleaning and long-distance cleaning, and is convenient to operate; when the cleaning brush is not used, the length of the brush handle 1 of the cleaning brush can be adjusted to be the shortest, so that the occupied space is reduced, and the cleaning brush is convenient to store.

In this embodiment, for reducing the occupation space of first armed lever 2 and second armed lever 3, set up second armed lever 3 into hollow body, make the second end of first armed lever 2 stretch into to second armed lever 3 inside, even first armed lever 2 and the coaxial cover of second armed lever 3 are established together, at the in-process of adjusting 1 length of brush holder, the occupation space of brush holder 1 in the direction of perpendicular its axis only is the diameter of second armed lever 3, and occupation space is little. In implementing, the locking structure includes a plurality of locating holes 4 of setting on first armed lever 2, first through-hole 5 of setting on second armed lever 3 and can inlay the fixture block 6 in locating hole 4 and first through-hole 5, fixture block 6 is the rigidity, difficult emergence deformation when the atress, fixture block 6 inlays simultaneously in locating hole 4 and first through-hole 5, realize the pin joint between first armed lever 2 and the second armed lever 3, thereby restriction second armed lever 3 and the relative movement between the first armed lever 2. The positioning holes 4 are uniformly distributed along the axial direction of the first arm rod 2, and the brush holder 1 can be adjusted and fixed to different lengths.

As an optional embodiment, the fixture block 6 may be a screw, at this time, a thread is formed on the positioning hole 4 on the first arm rod 2, after the relative positions of the first arm rod 2 and the second arm rod 3 are adjusted, the positioning hole 4 on the first arm rod 2 corresponds to the first through hole 5 on the second arm rod 3, and the screw passes through the first through hole 5 and is screwed into the positioning hole 4, so that the pin connection between the first arm rod 2 and the second arm rod 3 is realized, and the relative movement between the second arm rod 3 and the first arm rod 2 is limited. When the length of the brush holder 1 needs to be adjusted, the screw is screwed out of the positioning hole 4, so that the second arm rod 3 can move relative to the first arm rod 2, and after the relative position between the first arm rod 2 and the second arm rod 3 is adjusted, the screw is screwed into the positioning hole 4, so that the fixation of the relative position between the first arm rod 2 and the second arm rod 3 can be realized.

In a preferred embodiment, referring to fig. 4, a button 7 extends from one end of the fixture block 6 away from the axis of the first arm rod 2, and the button 7 and the fixture block 6 are fixedly connected to form an integrated structure, so that the stability and reliability of connection between the button 7 and the fixture block 6 can be ensured. The middle part of the button 7 is rotatably connected with the outer side wall of the second arm rod 3, and the fixed-axis rotation of the button 7 can be realized by applying force to one end of the button 7. Keep away from at button 7 and be provided with elastic component 8 between one end of fixture block 6 and second armed lever 3, when the one end atress that fixture block 6 was kept away from to second armed lever 3 was close to as button 7, elastic component 8 takes place elastic deformation, button 7 is close to the one end of fixture block 6 and rotates to the axis direction of keeping away from second armed lever 3, the distance between the one end that button 7 is close to fixture block 6 and the axis of second armed lever 3 increases, drive fixture block 6 and keep away from the axis of second armed lever 3 and break away from the joint with locating hole 4, make the locking structure be in the unblock state, can adjust the relative position between second armed lever 3 and the first armed lever 2 this moment. After the one end atress of keeping away from fixture block 6 when button 7 ended, elastic component 8 resumes deformation, order about button 7 and keep away from the axis that second armed lever 3 in the one end of fixture block 6, at this moment, the one end that button 7 is close to fixture block 6 is close to the axis of second armed lever 3, the distance between the one end that button 7 is close to fixture block 6 and the axis of second armed lever 3 reduces, drive the axis that fixture block 6 is close to second armed lever 3 and make fixture block 6 joint in locating hole 4, make the locking structure be in the locking state, the relative position between second armed lever 3 and first armed lever 2 is fixed this moment.

The elastic member 8 may be a compression spring, an axial direction of the compression spring is perpendicular to an axial line of the second arm 3, one end of the compression spring is fixedly connected to an outer side wall of the second arm 3, and the other end of the compression spring is fixedly connected to the button 7.

In order to prevent the second arm 3 from slipping off the second end of the first arm 2 during the movement of the second arm 3 relative to the first arm 2, an anti-slip structure is provided on the brush holder 1, as shown in fig. 4, a limit convex edge can be arranged at the second end of the first arm lever 2, after the second end of the first arm lever 2 is extended into the second arm lever 3, a fixing sleeve 17 is sleeved outside the second arm rod 3, the fixing sleeve 17 is of a cylindrical structure, a limiting convex edge is also arranged at one end of the fixing sleeve 17 close to the end part of the second arm rod 3, the fixing sleeve 17 is fixedly connected with the second arm rod 3 and can be connected through threads, during the movement of the second arm 3 with respect to the first arm 2, the fixed sleeve 17 moves with the second arm 3, the first end of the first arm 2 can be prevented from sliding completely out of the second arm 3 by the interaction between the limiting convex edge on the fixing sleeve 17 and the limiting convex edge on the first arm 2. At this time, the middle part of the button 7 is rotatably connected with the fixed sleeve 17.

In implementation, the brush head comprises bristles and a bristle seat 9 for installing the bristles, the bristle seat 9 can be arranged to be of a plate-shaped structure, the bristles are detachably and fixedly arranged on one surface of the bristle seat 9, and the other surface of the bristle seat 9 is detachably connected with the first end of the first arm rod 2. So set up, can dismantle the connection between brush hair seat 9 and the first arm pole 2, when not using this cleaning brush, can dismantle first arm pole 2 from brush hair seat 9 gets off, has reduced the length of this cleaning brush's occupation space, is convenient for accomodate. The bristles are detachably connected with the bristle seat 9, so that the bristles are convenient to clean and replace.

It should be noted that the bristles are detachably connected to the bristle base 9 through the bristle disk, one end of the bristles is fixed to the bristle disk, and the bristles are uniformly distributed on the bristle disk. The brush hair dish is soft material, like the PU leather, fixes the brush hair dish on brush hair seat 9 through connector link or magic subsides with the edge of brush hair dish after cladding brush hair dish on brush hair seat 9.

In this embodiment, in order to facilitate the connection between the bristle holder 9 and the brush handle 1, a support seat 10 is disposed on a side of the bristle holder 9 away from the bristles, for connecting with the first arm 2. The supporting seat 10 is provided with a blind hole 11 for the first end of the first arm lever 2 to extend into, the side wall of the blind hole 11 is provided with a second through hole 12, the axial direction of the second through hole 12 is perpendicular to the axial direction of the blind hole 11, the two ends of the second through hole 12 are respectively communicated with the inside of the blind hole 11 and the outside of the supporting seat 10, namely the second through hole 12 penetrates through the side wall of the blind hole 11. As shown in fig. 5, an elastic sheet 13 is disposed on an outer side wall of a first end of the first arm 2, the first end of the elastic sheet 13 is fixedly connected to the first arm 2, a distance between a second end of the elastic sheet 13 and an axis of the first arm 2 is greater than a distance between the first end of the elastic sheet 13 and the axis of the first arm 2, and a protrusion 14 capable of being clamped inside the second through hole 12 is disposed on a side of the second end of the elastic sheet 13 away from the first arm 2. When the first end of the first arm lever 2 does not extend into the blind hole 11 of the support seat 10, the distance between one surface of the convex block 14 far away from the first arm lever 2 and the axis of the first arm lever 2 is larger than the radius of the blind hole 11; in the process that the first end of the first arm rod 2 extends into the blind hole 11 of the support seat 10, the elastic sheet 13 deforms under the extrusion of the side wall of the blind hole 11, and gradually approaches the outer side wall of the first arm rod 2, so that the distance between the convex block 14 and the axis of the first arm rod 2 is reduced; when the elastic sheet 13 is completely attached to the outer side wall of the first arm lever 2, the distance between one surface of the convex block 14 away from the first arm lever 2 and the axis of the first arm lever 2 is smaller than the radius of the blind hole 11; when the first end of the first arm lever 2 extends into the blind hole 11 and the bump 14 moves to the position of the second through hole 12, the extrusion effect of the side wall of the blind hole 11 on the bump 14 disappears, and the bump 14 is clamped in the second through hole 12, so that the support seat 10 and the first arm lever 2 are fixed.

In the preferred mode of this embodiment, above-mentioned second through-hole 12 and shell fragment 13 all can set up to two, and two second through-holes 12 correspond with the position of two shell fragments 13, all set up about the axis symmetry of first armed lever 2, so, be favorable to guaranteeing the force balance between supporting seat 10 and the first armed lever 2, ensure the stability of being connected between supporting seat 10 and the first armed lever 2.

In implementing, above-mentioned first armed lever 2 also can set up to hollow body, and first armed lever 2 and second armed lever 3 are hollow structure, are favorable to alleviateing the quality of brush holder 1, reduce physical demands cleaning the in-process, facilitate the use more.

In a preferred embodiment, a guide structure may be provided between the first arm 2 and the second arm 3 in order to avoid relative rotation between the second arm 3 and the first arm 2 during movement of the second arm 3 relative to the first arm 2. Referring to fig. 6, the second arm 3 is sleeved outside the first arm 2, a sliding groove 15 extending along the axial direction of the first arm 2 may be disposed on an outer side wall of the first arm 2, a protrusion 16 may be disposed on an inner side wall of the second arm 3, and the protrusion 16 may be embedded in the sliding groove 15 and may reciprocate along the length direction of the sliding groove 15.

In the implementation, the anti-slip sleeve is arranged at one end, away from the brush head, of the second arm rod 3, so that a user can operate the cleaning brush conveniently. The anti-slip sleeve can be made of foam.

In the implementation, the material of above-mentioned first armed lever 2 and second armed lever 3 can be selected to the aluminum alloy material, and the density of aluminum alloy is low, and is slight high, is favorable to reducing the quality of cleaning brush, prolongs the life of cleaning brush. The bristles can be made of velvet silk threads which are fine, smooth and soft and are not easy to leave traces in the vehicle wiping process. The material of the bristle seat 9 and the supporting seat 10 can be selected from ABS plastic, and the ABS plastic has excellent mechanical property and better impact strength, and is beneficial to prolonging the service life of the cleaning brush.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A cleaning brush is characterized by comprising a brush head and a brush handle (1) with adjustable length, wherein the brush handle (1) comprises a first arm rod (2) and a second arm rod (3), the axis of the first arm rod (2) is parallel to the axis of the second arm rod (3), the first end of the first arm rod (2) is fixedly connected with the brush head, the second arm rod (3) is connected with the first arm rod (2) in a relatively movable manner, the second arm rod (3) is parallel to the axis of the first arm rod (2) relative to the moving direction of the first arm rod (2), and a locking structure is arranged between the first arm rod (2) and the second arm rod (3),

when the locking structure is in a first state, the second arm rod (3) can move in a reciprocating mode relative to the first arm rod (2) along the axial direction of the first arm rod (2); when the locking structure is in the second state, the locking structure limits the relative movement between the second arm lever (3) and the first arm lever (2).

2. The cleaning brush according to claim 1, wherein the second arm (3) is a hollow tube, the second end of the first arm (2) extends into the second arm (3), the locking structure comprises a plurality of positioning holes (4) formed in the first arm (2), a first through hole (5) formed in the second arm (3), and a plurality of locking blocks (6) capable of being inserted into the positioning holes (4) and the first through hole (5), and the plurality of positioning holes (4) are uniformly distributed along the axial direction of the first arm (2).

3. The cleaning brush according to claim 2, characterized in that a button (7) extends from one end of the block (6) away from the axis of the first arm (2), the button (7) and the clamping block (6) are fixedly connected into an integral structure, the middle part of the button (7) is rotatably connected with the outer side wall of the second arm rod (3), an elastic piece (8) is arranged between one end of the button (7) far away from the clamping block (6) and the second arm lever (3), when one end of the button (7) far away from the clamping block (6) is forced to approach the axis direction of the second arm lever (3), the elastic piece (8) is elastically deformed and enables the clamping block (6) to be separated from the positioning hole (4) in a clamping way, after the end of the button (7) far away from the fixture block (6) is stressed, the elastic piece (8) recovers deformation and enables the clamping block (6) to be clamped in the positioning hole (4).

4. A cleaning brush according to claim 1, wherein the brush head comprises a bristle holder (9) and bristles detachably connected to one side of the bristle holder (9), and the first end of the first arm (2) is detachably connected to the side of the bristle holder (9) remote from the bristles.

5. The cleaning brush according to claim 4, wherein a support seat (10) for connecting with the first arm (2) is arranged on one side of the bristle seat (9) far away from the bristles, a blind hole (11) for allowing the first end of the first arm (2) to extend into is arranged on the support seat (10), a second through hole (12) for communicating the inside of the blind hole (11) with the outside of the support seat (10) is arranged on the side wall of the blind hole (11), an elastic sheet (13) is arranged on the outer side wall of the first end of the first arm (2), the first end of the elastic sheet (13) is fixedly connected with the first arm (2), the distance between the second end of the elastic sheet (13) and the axis of the first arm (2) is greater than the distance between the first end of the elastic sheet (13) and the axis of the first arm (2), and one side of the second end of the elastic sheet (13) far away from the first arm (2) is provided with a support seat (10) which can be clamped with the first arm (2) A bump (14) inside the two through holes (12).

6. The cleaning brush according to claim 5, wherein there are two of the second through holes (12) and the spring pieces (13), two of the second through holes (12) are symmetrically disposed about the axis of the first arm (2), and two of the spring pieces (13) are symmetrically disposed about the axis of the first arm (2).

7. A cleaning brush as claimed in claim 2, characterized in that the first arm (2) is a hollow tube.

8. The cleaning brush according to claim 2, wherein a sliding groove (15) extending along the axial direction of the first arm (2) is arranged on the outer side wall of the first arm (2), and a protrusion (16) is arranged on the inner side wall of the second arm (3), wherein the protrusion (16) can be embedded in the sliding groove (15) and can move back and forth along the length direction of the sliding groove (15).

9. The cleaning brush according to claim 1, wherein an anti-slip sleeve is arranged at one end of the second arm (3) away from the brush head, and the anti-slip sleeve is made of foam.

10. The cleaning brush according to claim 5, wherein the first arm (2) and the second arm (3) are made of aluminum alloy, the bristles are made of edelweiss, and the bristle holder (9) and the support holder (10) are made of ABS plastic.