Electric cleaning brush

Abstract

The invention discloses an electric cleaning brush, and relates to the technical field of cleaning brushes, the electric cleaning brush comprises a brush head, a rotation driving assembly and a brush main body with a hand-held part, the brush head is rotatably arranged at the front end of the brush main body, and the hand-held part is arranged at the rear end of the brush main body; the brush body is further provided with a supporting piece, the supporting piece is arranged on the brush body and located behind the brush head, and the supporting piece is located between the brush head and the handheld part. The supporting piece is provided with a near end connected with the brush main body and a far end which is in contact support with an object to be cleaned; the far end of the supporting piece is provided with a rolling wheel used for making contact with a to-be-cleaned object. When a user holds the handheld part and enables the brush head to press a latticed object, the supporting piece can be correspondingly supported on the latticed object to form a stress fulcrum, so that the user can better keep the stability and balance of the electric cleaning brush; and when the brush net is moved back and forth, the supporting piece can well support in the moving process due to the arrangement of the rolling wheels.

Description

Technical Field

[0001] The present invention relates to the technical field of cleaning brushes, in particular to an electric cleaning brush. Background Art

[0002] In daily life, grid-shaped items like trays and racks accumulate dirt over time. For example, the grill grid on a barbecue grill is typically made of multiple welded metal strips. After grilling, the grill retains a lot of oil and burnt debris, and its grid-like shape makes cleaning difficult. Typically, people use ordinary brushes to clean the grill, which is labor-intensive and slow.

[0003] Chinese utility model patent No. 200620103433.0 discloses a grill brush comprising a handle and a brush head secured with a rigid metal wire. The device also includes a housing, a drive mechanism within the housing, a power supply, and a control switch. The brush head is connected to the drive mechanism via a rotating shaft. The drive mechanism, power supply, and control switch form a drive circuit. The drive mechanism's motor and gear train rotate the brush head in response to the electric drive, enabling efficient and labor-saving grill cleaning.

[0004] On this basis, the Chinese invention application with application number 202510021493.5 also proposes a handheld electric descaling brush that is easy to self-clean. The user can hold the brush handle to operate it more conveniently for cleaning, and after cleaning, the multi-axis brush can be disassembled for cleaning more conveniently.

[0005] However, when a user holds this type of electric cleaning brush and moves it back and forth on the grill to clean, the rest of the electric cleaning brush is suspended in the air, and only the brush head is pressed against the grill. It is difficult to keep the electric cleaning brush stable when moving it back and forth to clean. Summary of the Invention

[0006] In order to overcome the above-mentioned shortcomings, the present invention aims to provide a technical solution to the above-mentioned problems.

[0007] To achieve the above object, the present invention provides the following technical solution: an electric cleaning brush comprising a brush head, a rotary drive assembly and a brush body having a handheld portion, wherein the rotary drive assembly is used to drive the brush head to rotate. The brush head is rotatably arranged at the front end of the brush body, and the hand-held part is arranged at the rear end of the brush body; The brush body is also provided with a support member, which is provided on the brush body and located behind the brush head. The support member is located between the brush head and the handheld portion; When the user holds the handheld portion and presses the brush head toward the object to be cleaned, the support member can be supported on the object to be cleaned to form a force fulcrum; The support member has a proximal end connected to the brush body and a distal end for contacting and supporting the object to be cleaned; a roller for contacting the object to be cleaned is provided on the distal end of the support member.

[0008] A further technical solution of the present invention is that the rotation axis of the roller on the support is the same as the rotation axis of the brush head on the brush body.

[0009] A further technical solution of the present invention is that the proximal end of the support member is movably connected to the brush body, and the support member is movable on the brush body so that the support opening provided by the support member is variable.

[0010] A further technical solution of the present invention is that a rotation connection portion is provided at the proximal end of the support member, and a rotation matching portion is correspondingly provided on the brush body; The proximal end of the support member is rotatably connected to the brush body through the cooperation between the rotation connection portion and the rotation matching portion.

[0011] A further technical solution of the present invention is that a rotation amount limiting portion is further provided on the brush body; The rotation amount limiting portion is configured to limit the rotation amount of the support member, and the minimum support opening and the maximum support opening are obtained correspondingly.

[0012] A further technical solution of the present invention is that a second elastic member is provided between the support member and the brush body; When the supporting member moves to increase the support opening, the second elastic member acts in conjunction with the supported member and the brush body to undergo elastic deformation or to aggravate the elastic deformation.

[0013] A further technical solution of the present invention is that the second elastic member includes a torsion spring; When the support member rotates to increase the support opening, the two force-bearing ends of the torsion spring are respectively pressed by the support member and the brush body, so that the torsion spring is in torsional deformation or in a larger torsional deformation.

[0014] A further technical solution of the present invention is as follows: the second elastic member includes an elastic shaft, which is arranged between the rotating connecting portion and the rotating matching portion; When the support member rotates to increase the support opening, the elastic shaft is acted upon by the rotating connecting portion and the rotating matching portion, and the internal elastic component of the elastic shaft correspondingly generates elastic deformation or greater elastic deformation.

[0015] A further technical solution of the present invention is that a mud guard is provided on the support member.

[0016] A further technical solution of the present invention is as follows: the brush head has a bristle connecting portion extending toward both ends of the connecting piece; bristles are connected to the bristle connecting portion; The rotary drive assembly drives the brush head and enables the brush head to have a rotary cleaning state of brushing backward.

[0017] Compared with the existing technology, the beneficial effects of this technical solution are: when the user holds the handle and presses the brush head against the grid-shaped object, the support member can be supported on the grid-shaped object accordingly to form a force fulcrum, so that the user can better maintain the stability and balance of the electric cleaning brush; when moving the brush net back and forth, the setting of the roller enables the support member to better provide support during movement.

[0018] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is a structural perspective diagram of the present invention, wherein the brush head has bristles; Figure 2 It is another structural stereogram of the present invention, which is Figure 1 The viewing direction is different; Figure 3 It is an exploded view of the structure of the present invention; Figure 4 This is another structural explosion diagram of the present invention, which is Figure 3 The viewing direction is different; Figure 5 It is another structural explosion diagram of the present invention, which is Figure 3 、 4 The viewing direction is different; Figure 6 This is a three-dimensional diagram of the brush head structure of the present invention, wherein the brush head has bristles; Figure 7 It is a side view of the brush head structure of the present invention, and the brush head has bristles; Figure 8 for Figure 7 A magnified schematic diagram of the local structure at center A; Figure 9 for Figure 8 A schematic diagram of another structure at the center; Figure 7 In contrast, a fixed column is provided; Figure 10 This is a schematic structural diagram of the support member and the second elastic member of the present invention, wherein the second elastic member includes an elastic rotating shaft; Figure 11This is another structural diagram of the support member and the second elastic member of the present invention, wherein the second elastic member includes a torsion spring; Figure 12 This is another structural perspective view of the present invention, in which the brush head has a cleaning mesh cover; The corresponding reference numerals in the accompanying drawings are described as follows: Brush head - 1, Connecting member 11, connecting portion mounting groove 111, necking portion 112, output shaft 113, conical end face 1131, contact cleaning member 12, cleaning mesh 121, bristles 122, curved cleaning portion 1221, bristle connecting portion 123, first clamping wing 1231, second clamping wing 1232, clamping body 1233, first clamping head 1234, second clamping head 1235, fixing post 1236, Rotary drive assembly-2, Drive motor-21, transmission assembly-22, connecting shaft-221, axial slot-222, Brush body-3, Base 31, mounting bracket 311, motor mounting base 312, shock-absorbing sleeve 313, shock-absorbing sleeve body 3131, shock-absorbing sleeve covering portion 3132, sealing ring 314, support arm positioning portion 315, first connecting arm 32, plug hole 321, mounting port 322, sealing cover 323, first hard stabilizing ring 324, second hard stabilizing ring 325, axial connecting stud 326, positioning connecting sleeve 327, second connecting arm 33, support arm positioning fitting portion 331, tapered hole 332, locking assembly 34, threaded portion 341, threaded fitting member 342, first elastic member 343, rotation limiter 35, Handheld part-4, Support-5, Roller 51 , rotating connection portion 52 , mounting slot 521 , second elastic member 53 , torsion spring 53 a , elastic shaft 53 b , mudguard 54 , reinforcing rib 55 . DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figure 1-12 , an electric cleaning brush includes a brush head 1, a rotation drive assembly 2 and a brush body 3 with a handheld part 4.

[0023] The handheld portion 4 can be suitable for being held by a user, so as to conveniently manually operate the electric cleaning brush. The handheld portion 4 is, for example, arranged at the rear end of the brush body 3 .

[0024] The brush head 1 is rotatably mounted on the brush body 3 . For example, the brush head 1 is rotatably mounted on the front end of the brush body 3 .

[0025] The rotary drive assembly 2 is used to drive the brush head to rotate, so that when the user operates the electric cleaning brush, the brush head 1 driven by the rotary drive assembly 2 can be placed against a grid-shaped object such as a barbecue net, so that the rotating brush head 1 can clean the grid-shaped object.

[0026] The brush head 1 and the hand-held part 4 are respectively arranged at the front end and the rear end of the brush body 3, and a certain distance can be formed accordingly, which effectively avoids being scratched by the rotating brush head when holding the brush for rotational cleaning.

[0027] In some embodiments, the brush head 1 includes a shaft-shaped connecting member 11 and a contact cleaning member 12 disposed externally thereto. The rotary drive assembly 2 drives the connecting member 11 to rotate, and the contact cleaning member 12 correspondingly rotates with the connecting member 11 or is driven to rotate by the connecting member 11. When operating the electric cleaning brush, the user can place the rotating contact cleaning member 12 against a grid-like object, such as a barbecue grill, to continuously rotate, contact, and frictionally clean the grid-like object, thereby creating a rotating brushing action.

[0028] In some embodiments, the length direction of the rotation center line of the connecting member 11 during rotation coincides with the axis of the connecting member 11 .

[0029] like Figure 12 As shown, in some embodiments, the contact cleaning member 12 includes a cleaning mesh sleeve 121 sleeved on the connecting member 11. The cleaning mesh sleeve 121 can be made of, for example, a metal material to have good hardness and wear resistance.

[0030] In some embodiments, the connecting member includes a central axis portion (not shown) and a first end portion and a second end portion respectively located at both ends of the central axis portion. The cleaning mesh sleeve is sleeved on the central axis portion, and the two ends of the cleaning mesh sleeve extend and wrap around the end face of the first end portion and the end face of the second end portion respectively. The two ends of the cleaning mesh sleeve are necked so that the cleaning mesh sleeve can be better maintained on the connecting member.

[0031] The necking can be formed by, for example, sewing, drawing, weaving or other processes of the necking line.

[0032] The shrinkage can be elastic, for example, by providing an elastic ring at the end of the cleaning net sleeve, the elastic ring being circumferentially connected to the corresponding end of the cleaning net sleeve along the edge of the end of the cleaning net sleeve. When the cleaning net sleeve is installed, the elastic ring is elastically stretched by force, and after the cleaning net sleeve is in place, the force is removed to cause the elastic ring to shrink accordingly, thereby shrinking the end of the cleaning net sleeve.

[0033] In some embodiments, the cleaning net 121 is detachably mounted on the connector, and the user can disassemble it for cleaning, maintenance, or replacement.

[0034] In some embodiments, the outer layer of the connecting member is provided with an elastic supporting portion (not shown) for supporting the cleaning mesh sleeve.

[0035] In some embodiments, the elastic support portion includes a plurality of raised portions and a plurality of recessed areas spaced apart along the axial direction of the connecting member. The raised portions and the recessed areas are staggered with each other. The raised portions serve as supports for the metal cleaning mesh sleeve. Through the tension of the metal mesh sleeve and the elastic deformation of the raised areas, the grid lines of the object can press the metal mesh sleeve into the recessed areas together, thereby enabling the mesh of the object to be cleaned over a larger range, which can be understood as being able to enter the mesh holes of the object for cleaning.

[0036] In some embodiments, the elastic support portion is made of, for example, a silicone material to have elasticity.

[0037] like Figure 1-11 As shown, in some embodiments, the contact cleaning member 12 includes a plurality of bristles 122 disposed on the connecting member 11. The bristles 122 can be made of metal, for example, to have good hardness and wear resistance. For example, the bristles 122 can be made of a steel wire structure.

[0038] In some embodiments, a bristle connecting portion 123 is provided on the outer side of the connecting member 11, and a portion of the bristles 122 can be correspondingly connected to the bristle connecting portion 123. When the connecting member 11 rotates, the bristles 122 can be driven to rotate to clean the grid-shaped objects.

[0039] In some embodiments, the bristles 122 have a curved cleaning portion 1221, which can increase the cleaning range during rotation; and during cleaning, through the curved setting, the bristles (the portion with the curved cleaning portion) that penetrate into the mesh can help increase the friction when cleaning the grid-shaped objects, making them easier to clean.

[0040] In some embodiments, the curved cleaning portion 1221 has a proximal end close to the outside of the connecting piece and a distal end away from the outside of the connecting piece; between the proximal end of the curved cleaning portion 1221 and the distal end of the curved cleaning portion 1221, the curved cleaning portion 1221 has multiple curved sections.

[0041] In some embodiments, the bristle connecting portion 123 is configured to clamp the bristles 122 in a clamping manner.

[0042] In some embodiments, the bristle connecting portion 123 includes a clamping main body portion 1233 and a first clamping wing 1231 and a second clamping wing 1232 connected to the clamping main body portion. The first clamping wing 1231 and the second clamping wing 1232 are arranged opposite to each other, and the first clamping wing 1231 and the second clamping wing 1232 are clamped to each other to clamp the bristles 122 located between the first clamping wing and the second clamping wing.

[0043] In some embodiments, the clamping body 1233, the first clamping wing 1231 and the second clamping wing 1232 can be made of metal to provide better clamping and holding capabilities. For example, the first clamping wing 1231 and the second clamping wing 1232 can be made of an iron sheet structure.

[0044] In some embodiments, the first clamping wing 1231 and the second clamping wing 1232 both have a certain width and length. Therefore, when the first clamping wing 1231 and the second clamping wing 1232 are clamped together, multiple bristles can be clamped simultaneously.

[0045] During clamping, a portion of the bristles 122 is clamped between the first clamping wing 1231 and the second clamping wing 1232, and another portion of the bristles 122 passes through between the first clamping wing 1231 and the second clamping wing 1232 and is located outside the bristle connecting portion 123 for cleaning objects.

[0046] In some embodiments, the first clamping wing 1231 and the second clamping wing 1232 each have a proximal end connected to the clamping body 1233 and a distal end away from the clamping body 1233. The distal end of the first clamping wing 1231 corresponds to the distal end of the second clamping wing 1232.

[0047] The distal end of the first clamping wing 1231 has a first clamping head 1234 extending toward the distal end of the second clamping wing 1232, and the distal end of the second clamping wing 1232 has a second clamping head 1235 extending toward the distal end of the first clamping wing 1231. When the first clamping wing 1231 and the second clamping wing 1232 are clamped together, the bristles 122 are clamped by the first clamping head 1234 and the second clamping head 1235.

[0048] In some embodiments, the bristle connector 123 has a length extending toward both ends of the connector 11. After the first clamping head 1234 and the second clamping head 1235 are clamped, an internal space of the bristle connector is formed, which is enclosed by the clamping body 1233, the first clamping wing 1231, and the second clamping wing 1232. The length of the internal space corresponds to the length of the bristle connector 123. This length setting allows the bristle connector 123 to clamp more bristles at the same time.

[0049] In some embodiments, a fixing column 1236 is provided in the inner space of the bristle connecting portion 123 , and the length direction of the fixing column 1236 corresponds to the length direction of the inner space of the bristle connecting portion 123 .

[0050] One end of the bristle 122 passes into the internal space of the bristle connecting part 123 and passes out of the internal space of the bristle connecting part 123 after bypassing the fixed column 1236; that is, the bristle has a winding section that bypasses the fixed column, and two bristle ends connected to the winding section and located outside the internal space of the bristle connecting part 123, and at least one bristle end has a curved cleaning part.

[0051] The arrangement of the fixing column 1236 and the bristles 122 makes it more difficult for the bristles 122 to fall off after being clamped.

[0052] In some embodiments, the width of the fixing column is greater than the distance between the first clamp and the second clamp after clamping the bristles.

[0053] In some embodiments, a connection portion mounting groove 111 is formed on the outer circumference of the connection member 11. The connection portion mounting groove 111 has a protruding opening corresponding to the outer circumference of the connection member 11. The connection portion mounting groove 111 extends toward the end of the connection member 11 and penetrates the end surface of the end of the connection member 11 to form a connection portion mounting opening, wherein a constriction portion 112 is provided around the periphery of the protruding opening. The constriction portion 112 is, for example, integrally formed on the connection member, and the constriction portion 112 makes the width of the protruding opening smaller than the width inside the connection portion mounting groove 111.

[0054] The bristle connecting portion 123 is inserted into the connecting portion mounting groove 111 from the connecting portion mounting opening, and the bristles 122 connected to the bristle connecting portion 123 extend out of the outer peripheral surface of the connector 11 through the extending opening.

[0055] The constricted portion 112 restricts the bristle connecting portion 123 to prevent the bristle connecting portion 123 from escaping from the extending opening.

[0056] In some embodiments, the inner wall of the connecting portion mounting groove 111 also supports the first clamping wing 1231 and the second clamping wing 1232. That is, after the bristle connecting portion 123 is inserted into the connecting portion mounting groove 111, the inner wall of the connecting portion mounting groove 111 can support the first clamping wing 1231 and the second clamping wing 1232 during rotation for cleaning, thereby preventing the clamping opening of the first clamping wing 1231 and the second clamping wing 1232 from becoming too wide. Thus, during high-speed rotation for cleaning, the bristles 122 subjected to the cleaning friction can still be well retained on the bristle connecting portion 123.

[0057] In some embodiments, the length direction of the connection portion mounting groove 111 is the same as the axial direction of the connection member 11 .

[0058] In some embodiments, a plurality of connection portion installation grooves 111 are provided on the outer peripheral surface of the connection member 11 at intervals along the circumference thereof, and corresponding bristle connection portions 123 are provided in the connection portion installation grooves 111 .

[0059] By plugging and connecting the bristle connecting portion 123, the bristles of each part (in the corresponding bristle connecting portion) can be removed from the brush head separately, which is more conducive to thorough cleaning of the brush head 1 and the ability to replace the bristles of each part separately.

[0060] In some embodiments, the brush body 3 includes a base 31 and a first connecting arm 32 and a second connecting arm 33 provided on both sides of the base 31. The base 31 and the first connecting arm 32 and the second connecting arm 33 together form a mounting position for mounting the brush head. Figure 1 、 3 As shown, the first connecting arm 32 and the second connecting arm 33 are located on both sides of the base 31 corresponding to the axial direction of the connecting member 11.

[0061] In some embodiments, the first connecting arm 32 and the base have a connected inner cavity, and the rotation drive assembly 2 includes a drive motor 21 disposed in the inner cavity, and the drive motor 21 is used to drive the brush head 1 to rotate.

[0062] In some embodiments, the rotary drive assembly 2 further includes a transmission assembly 22 disposed in the inner cavity. The rotation output by the drive motor 21 is transmitted to the brush head 1 via the transmission assembly 22, thereby driving the brush head 1 to rotate.

[0063] In some embodiments, the transmission assembly 22 includes a gear set that is used to accelerate or decelerate the rotation of the drive motor 21 and transmit it to the brush head 1. Accordingly, the gear set for acceleration can also be called an acceleration gear set. Correspondingly, the gear set for deceleration can also be called a reduction gear set.

[0064] In some embodiments, the gear set can be a reduction gear set, which is used to reduce the high-speed rotation of the drive motor 21 through the tooth ratio of different gears of the reduction gear set, for example, reducing the rotation output of 18,000 revolutions per minute to about 700 revolutions per minute. The output torque is increased by the reduction gear set, so that the brush head 1 can obtain greater torque and thus can more forcefully brush off the adhered solid objects in the net, such as carbon char sintered by food on the barbecue grid.

[0065] In some embodiments, the connector 11 is connected to an output shaft 113 , and the drive motor 21 drives the output shaft 113 directly or through the transmission assembly 22 , thereby driving the brush head 1 to rotate.

[0066] In some embodiments, the two ends of the output shaft 113 can be supported by the first connecting arm 32 and the second connecting arm 33 respectively, or it can be understood that the two ends of the output shaft 113 are respectively rotated with the first connecting arm 32 and the second connecting arm 33, and have better rotational stability when rotating for cleaning.

[0067] In some embodiments, the transmission assembly 22 includes a connecting shaft 221 rotatably disposed in the inner cavity of the first connecting arm 32, the axial direction of the connecting shaft 221 is the same as the axial direction of the output rotating shaft 113, one end of the connecting shaft 221 is engaged with one end of the output rotating shaft 113, and is configured so that the axis of the connecting shaft 221 coincides with the axis of the output rotating shaft 113.

[0068] In some embodiments, when the transmission assembly 22 includes a gear set, the connecting shaft 221 may be a rotating shaft on the last gear of the gear set.

[0069] In some embodiments, one end of the connecting shaft 221 and one end of the output shaft 113 may be connected by plugging.

[0070] For example, an axial slot 222 is formed on the end surface of one end of the connecting shaft 221. The radial cross-section of the axial slot 222 is non-circular. A plug hole 321 communicating with the inner cavity is formed on the side of the first connecting arm 32 facing the mounting position. The axial slot 222 is exposed to the outside through the plug hole 321. For example, the connecting shaft is located within the first connecting arm, and the opening of the axial slot faces the plug hole, so that the axial slot in the first connecting arm can be contacted through the plug hole. For another example, one end of the connecting shaft is located in the plug hole, and the axial slot on one end of the connecting shaft faces the external opening of the plug hole. For another example, one end of the connecting shaft extends to pass through the plug hole, so that the opening of the axial slot is located outside the first connecting arm.

[0071] One end of the output shaft 113 corresponds to the axial slot 222 , and one end of the output shaft 113 can be correspondingly inserted into the axial slot 222 .

[0072] The radial cross-section of one end of the output shaft 113 is also correspondingly non-circular, so that the output shaft 113 can be quickly engaged with the connecting shaft 221 by plugging and can be driven to rotate by the connecting shaft 221 .

[0073] In some embodiments, a mounting opening 322 communicating with the inner cavity is provided on the side of the first connecting arm 32 facing away from the mounting position. A sealing cover 323 is detachably attached to the first connecting arm 32 to cover the mounting opening. During installation or maintenance, the sealing cover 323 can be removed to more conveniently access the interior of the first connecting arm 32.

[0074] In some embodiments, the direction in which the sealing cover 323 covers the mounting opening 322 can be aligned with the axial direction of the connecting shaft 221. In this manner, the sealing cover 323 can further support the rotating components within the first connecting arm 32. For example, one end of the connecting shaft 221 is supported by the first connecting arm 32, while the other end of the connecting shaft 221 is supported by the sealing cover 323 covering the first connecting arm. This allows for easier inspection and maintenance of the internal rotating components after the sealing cover 323 is removed.

[0075] In some embodiments, when the transmission assembly 22 includes a gear set, the sealing cover 323 can also be used to further support the rotating shaft of the gear.

[0076] In some embodiments, the sealing cover 323 and the first connecting arm 32 serve as components for supporting the connecting shaft 221. A second hard stabilization ring 325 that cooperates with the connecting shaft 221 is provided on the sealing cover 323, and a first hard stabilization ring 324 that cooperates with the connecting shaft 221 is provided on the first connecting arm 32. One end of the connecting shaft 221 is correspondingly inserted into the first hard stabilization ring 324 and rotates with the first hard stabilization ring 324; when the sealing cover 323 is covered on the first connecting arm 32, the second hard stabilization ring 325 is correspondingly sleeved on the other end of the connecting shaft 221 and rotates with the connecting shaft 221.

[0077] The first hard stabilizing ring 324 and the second hard stabilizing ring 325 are, for example, metal rings and have a certain stable length in the axial direction. After the connecting shaft 221 is engaged with the output shaft 113, the first hard stabilizing ring 324 and the second hard stabilizing ring 325 can provide a hard support for the connecting shaft 221.

[0078] In some embodiments, a mounting bracket 311 is provided in the base 31 , and the mounting bracket 311 has a cylindrical motor fixing seat 312 .

[0079] The mounting bracket 311 and the motor fixing seat 312 are separated in the communication space between the first connecting arm 32 and the base 31 , and the first connecting arm 32 is connected to the interior of the base 31 through the cylindrical opening of the cylindrical motor fixing seat 312 .

[0080] The driving motor 21 is inserted into the motor fixing seat 312 , and the output shaft of the driving motor 21 is inserted into the inner cavity of the first connecting arm 32 through the barrel opening of the motor fixing seat 312 , thereby driving the brush head 1 through the above-mentioned transmission assembly 22 .

[0081] In some embodiments, a shock-absorbing sleeve 313 is provided in the motor fixing seat 312, and the shock-absorbing sleeve 313 is located between the motor fixing seat 312 and the housing of the driving motor 21. The shock-absorbing sleeve 313 is sleeved on the housing of the driving motor.

[0082] In some embodiments, the shock-absorbing sleeve 313 includes a shock-absorbing sleeve body 3131 that is sleeved on the outer circumference of the drive motor 21, and a shock-absorbing sleeve covering portion 3132 that extends to cover the output shaft end cap of the drive motor 21. The shock-absorbing sleeve covering portion 3132 has an opening corresponding to the shaft. This provides a good shock-absorbing effect while also effectively reducing noise.

[0083] In some embodiments, the shock-absorbing sleeve 313 can be made of elastic plastic materials such as silicone and rubber.

[0084] In some embodiments, a sealing ring 314 is provided on the covering edge of the sealing cover 323 that cooperates with the first connecting arm 32 . After covering, the sealing ring 314 can effectively reduce the noise transmitted from the first connecting arm 32 .

[0085] In some embodiments, an axial connecting stud 326 is provided inside the first connecting arm 32, and the inner side of the sealing cover 323 corresponding to the inner cavity of the first connecting arm 32 has a positioning connecting sleeve 327 that cooperates with the axial connecting stud, and the outer side of the sealing cover 323 is provided with a threaded interface corresponding to the positioning connecting sleeve 327.

[0086] The sealing cover 323 is oriented and covered on the first connecting arm 32 through the positioning sleeve 327 and the positioning sleeve of the axial connecting stud 326. The sealing cover 323 is connected to the axial connecting stud 326 by passing the configured screw through the screw interface to form a detachable connection with a positioning effect.

[0087] In some embodiments, the second connecting arm 33 has a switchable first state and a second state relative to the base 31. In the first state, the second connecting arm 33 can form an anti-dropout barrier for the output rotating shaft 113 inserted into the connecting shaft; in the second state, the second connecting arm 33 can cancel the anti-dropout barrier for the output rotating shaft 113 inserted into the connecting shaft.

[0088] By switching between the first state and the second state, the brush head 1 can be configured to be detachably connected to the brush body 3 , that is, the output shaft 113 and the connecting shaft 221 are detachably connected.

[0089] In some embodiments, when the second connecting arm 33 prevents the output shaft 113 inserted on the connecting shaft from falling off, the second connecting arm 33 can also support the output shaft 113 , that is, it can rotate with the output shaft 113 .

[0090] In some embodiments, a locking assembly 34 is provided between the second connecting arm 33 and the base 31. The locking assembly 34 is used to lock the second connecting arm 33 to the base 31 when the second connecting arm 33 is in the first state; the locking assembly 34 is also used to unlock the second connecting arm 33 locked to the base, allowing the second connecting arm 33 to change to the second state.

[0091] In some embodiments, the second connecting arm 33 is detachably connected to the base 31 , the first state corresponds to a connected state, and the second state corresponds to a detached state.

[0092] In some embodiments, the locking assembly 34 includes a threaded portion 341 located on a side of the base 31 and a threaded fitting 342 located on the second connecting arm 33 ; the threaded portion 341 and the threaded fitting 342 can be threadedly engaged with each other.

[0093] After the second connecting arm 33 is close to the base 31 , the second connecting arm 33 can be connected to the base 1 by screwing the screw connection portion 341 and the screw connection fitting 342 .

[0094] Specifically, the screw connection portion 341 is, for example, a structural member having a screw hole disposed on the base, such as a screw hole post or a nut, which is restricted from being separated from the base in a direction approaching the second connecting arm. For example, the screw hole post is integrally formed on the base, or the base is provided with a retaining bracket for retaining the nut.

[0095] The threaded fitting 342 is, for example, a knob having a screw portion and a cap portion, and the second connecting arm has a connecting hole corresponding to the screw hole of the screw portion. The screw portion of the knob passes through the connecting hole and is screwed onto the screw portion, and the cap portion of the knob tightens the second connecting arm to the base.

[0096] In some embodiments, a first elastic member 343 is disposed between the knob and the second connecting arm 33. When the screw portion of the knob is threadedly engaged with the threaded hole of the threaded portion, the first elastic member 343 is elastically deformed by the combined action of the knob and the second connecting arm 33. The provision of the first elastic member 343 provides a more stable connection and prevents loosening, particularly when the second connecting arm 33 supports the output shaft 113, thereby effectively preventing the threaded connection from loosening.

[0097] In some embodiments, the first elastic member 343 includes a compression spring sleeved on the screw portion of the knob.

[0098] In some embodiments, at the contact portion between the second connecting arm 33 and the base 31, the base 31 has a support arm positioning portion 315, and the second connecting arm 33 has a support arm positioning fitting portion 331. The positioning and fitting of the support arm positioning portion 315 and the support arm positioning fitting portion 331 prevents the second connecting arm 33 from rotating and shifting after being screwed and tightened, so as to better limit and support the brush head 1.

[0099] In some embodiments, the end of the output shaft 113 corresponding to the second connecting arm has a conical end face 1131, and the second connecting arm 33 is provided with a tapered hole 332 that cooperates with the conical end face. The inclined surface characteristics of the conical end face 1131 make it easier for the second connecting arm 33 to be aligned and supported with the output shaft 113, and when the second connecting arm is disassembled, the second connecting arm 33 is also easier to separate from the output shaft 113.

[0100] In some embodiments, the output shaft 113 and the connector 11 are detachably connected. For example, the connector 11 has a central axis hole extending therethrough, and the output shaft 113 is correspondingly inserted into the central axis hole. This can be understood as the connector 11 being sleeved onto the output shaft 113. In this way, the brush head 1 has multiple separately detachable components, including the output shaft 113, the connector 11, and the contact cleaning member 12. This further reduces the replacement cost of the brush head 1, allows for targeted replacement of damaged components, and facilitates comprehensive cleaning of the brush head 1.

[0101] In some embodiments, the radial cross-section of the central axis hole is non-circular, and the radial cross-section of the shaft segment of the output shaft 113 that passes through the central axis hole is correspondingly non-circular, so that the output shaft 113 can better drive the connector 11 to rotate. The non-circular shape is, for example, a regular hexagon.

[0102] In some embodiments, a support member 5 is further provided on the brush body 3. The support member 5 is provided on the brush body 3 and is located behind the brush head 1. The support member 5 is located between the brush head 1 and the handheld portion 4. When the user holds the handheld portion 4 and presses the brush head 1 toward a grid-shaped object, the support member 5 can be correspondingly supported on the grid-shaped object to form a force fulcrum, so that the user can better maintain the stability and balance of the electric cleaning brush.

[0103] In some embodiments, the support member 5 has a proximal end connected to the brush body 3 and a distal end for contacting and supporting the grid-shaped objects; a roller 51 for contacting the grid-shaped objects is provided on the distal end of the support member 5.

[0104] In some embodiments, the axial direction of the roller 51 on the support member 5 is the same as the axial direction of the brush head 1. When the brush net is moved back and forth, the arrangement of the roller 51 enables the support member 5 to provide better support during movement.

[0105] In some embodiments, the proximal end of the support member 5 is movably connected to the brush body 3. The support member 5 is movable on the brush body 3 so that the support opening provided by the support member 5 is variable.

[0106] The support opening indicates that when the brush head 1 contacts an object and the support member 5 is supported on the object, the support member 5 is in different active positions, which can make the degree to which the handheld part 4 approaches the object or the inclination of the handheld part 4 change accordingly.

[0107] In some embodiments, the support member 5 is movably connected to the brush body 3 in a rotational connection manner, for example, and the support opening provided by the support member 5 is variable by rotating the support member 5 .

[0108] For example, a rotation connection portion 52 is provided at the proximal end of the support member 5, and a rotation matching portion (not shown) is correspondingly provided on the brush body 3. The proximal end of the support member 5 is rotationally connected to the brush body 3 through the cooperation between the rotation connection portion 52 and the rotation matching portion.

[0109] For example, the rotation connection portion 52 is a rotation shaft, and the rotation matching portion is a rotation shaft seat that matches the rotation shaft.

[0110] When the provided support opening becomes smaller, it can be understood that the support member 5 is rotated to make the distal end closer to the brush head 1; when the provided support opening becomes larger, it can be understood that the support member 5 is rotated to make the distal end farther away from the brush head 1.

[0111] In some embodiments, a rotation amount limiting portion 35 is further provided on the brush body 3 to limit the rotation amount of the support member 5, thereby limiting the minimum support opening and the maximum support opening.

[0112] At the minimum support opening, the support member 5 does not contact the brush head 1, or it is understood that there is a redundant gap between the support member 5 and the brush head 1 to prevent the support member 5 from affecting the rotation of the brush head 1; at the maximum support opening, the support member 5 does not contact the handheld part 4, or it is understood that there is a safe distance between the support member 5 and the handheld part 4 to prevent the support member 5 from hitting the user's hand holding the handheld part 4.

[0113] In some embodiments, a second elastic member 53 is further provided between the support member 5 and the brush body 3 .

[0114] When the support member 5 moves to increase the support opening, the second elastic member 53 acts on the supported member 5 and the brush body 3 to elastically deform, or even to increase the elastic deformation. Thus, when the external force is removed, the second elastic member 53 exerts an elastic force on the support member 5, causing the support member 5 to move until the support opening decreases. In other words, the second elastic member 53 provides kinetic energy for the movement of the support member 5 after elastic deformation.

[0115] like Figure 11 As shown, in some embodiments, when the support member 5 is rotatably connected to the brush body 3, the second elastic member 53 may include, for example, a torsion spring 53a. When the support member 5 rotates to increase the support opening, the two force-bearing ends of the torsion spring 53a are pressed by the support member 5 and the brush body 3, respectively, causing the torsion spring 53a to be in a torsional deformation or a larger torsional deformation.

[0116] like Figure 10 As shown, in some embodiments, when the support member 5 is rotatably connected to the brush body 3, the second elastic member 53 may include, for example, an elastic shaft 53b, which is disposed between the rotational connection portion 52 and the rotational mating portion. Specifically, for example, the rotational connection portion 52 and the rotational mating portion both have mounting slots 521, with the outer sleeve of the elastic shaft 53b positioned and inserted into the mounting slot of the rotational mating portion, and the rotation block of the elastic shaft 53b positioned and inserted into the mounting slot of the rotational connection portion 52. When the support member 5 is rotated to increase the support opening, the elastic shaft 53b is acted upon by the rotational connection portion 52 and the rotational mating portion, causing the internal elastic component of the elastic shaft 53b to undergo corresponding elastic deformation or greater elastic deformation.

[0117] By varying the opening and the second elastic member 53, the support member 5 can provide a better shock absorption effect when supporting. On the other hand, when supporting in motion, the roller 51 can better navigate uneven surfaces, making it less likely to get stuck during the support. In addition, when the user grasps the handle 4 and presses down, the user can also adjust the inclination of the handle 4 within the support opening range to adjust the force applied.

[0118] In some embodiments, a mud guard 54 is provided on the support member 5, and the mud guard 54 is used to resist water stains or particles to reduce the splashing of water stains or particles to the rear handheld part or the rear user during cleaning.

[0119] In some embodiments, the support member 5 is provided with a plurality of reinforcing ribs 55 to further enhance the supporting strength of the support member 5 .

[0120] In some embodiments, the reinforcing rib 55 is provided on a side of the support member 5 away from the brush head 1 to prevent water stains or particles splashed from the brush head from directly adhering to the corners formed by the reinforcing rib.

[0121] In some embodiments, the support member 5 can be a structural member made of metal material, hard plastic material, etc., which has a relatively large supporting strength.

[0122] In some embodiments, when the above-mentioned support member 5, the second elastic member 53 and the brush head 1 with bristles are provided at the same time, and the brush head 1 has a bristle connecting portion 123 extending to both ends of the connecting member 11: the driving motor 21 has a rotational output state for driving the brush head 1 to brush the grid-shaped objects backward, that is, the brush head 1 has a rotational cleaning state of brushing backward. At this time, the bristles 122 brushing backward and the support member 5 whose kinetic energy is provided by the second elastic member 53 can simultaneously form a clamping effect on the grid-shaped objects, so that the cleaning effect is better.

[0123] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. An electric cleaning brush, comprising a brush head, a rotary drive assembly and a brush body having a handheld portion, wherein the rotary drive assembly is used to drive the brush head to rotate, characterized in that: The brush head is rotatably arranged at the front end of the brush body, and the hand-held part is arranged at the rear end of the brush body; The brush body is also provided with a support member, which is provided on the brush body and located behind the brush head. The support member is located between the brush head and the handheld portion; The support member has a proximal end connected to the brush body and a distal end for contacting and supporting the object to be cleaned; a roller for contacting the object to be cleaned is provided on the distal end of the support member.

2. The electric cleaning brush according to claim 1, characterized in that The rotation axis of the roller on the support is the same as the rotation axis of the brush head on the brush body.

3. The electric cleaning brush according to claim 1 or 2, characterized in that: The proximal end of the support member is movably connected to the brush body, and the support member is movable on the brush body so that the support opening provided by the support member is variable.

4. The electric cleaning brush according to claim 3, characterized in that A rotation connection portion is provided at the proximal end of the support member, and a rotation matching portion is correspondingly provided on the brush body; The proximal end of the support member is rotatably connected to the brush body through the cooperation between the rotation connection portion and the rotation matching portion.

5. The electric cleaning brush according to claim 4, characterized in that The brush body is also provided with a rotation amount limiting portion; The rotation amount limiting portion is configured to limit the rotation amount of the support member, and the minimum support opening and the maximum support opening are obtained correspondingly.

6. The electric cleaning brush according to claim 4 or 5, characterized in that: A second elastic member is further provided between the support member and the brush body; When the supporting member moves to increase the support opening, the second elastic member acts in conjunction with the supported member and the brush body to undergo elastic deformation or to aggravate the elastic deformation.

7. The electric cleaning brush according to claim 6, characterized in that The second elastic member includes a torsion spring; When the support member rotates to increase the support opening, the two force-bearing ends of the torsion spring are respectively pressed by the support member and the brush body, so that the torsion spring is in torsional deformation or in a larger torsional deformation.

8. The electric cleaning brush according to claim 6, characterized in that The second elastic member includes an elastic shaft, which is arranged between the rotation connection portion and the rotation matching portion; When the support member rotates to increase the support opening, the elastic shaft is acted upon by the rotating connecting portion and the rotating matching portion, and the internal elastic component of the elastic shaft correspondingly generates elastic deformation or greater elastic deformation.

9. The electric cleaning brush according to claim 1, characterized in that A mud guard portion is provided on the support member.

10. The electric cleaning brush according to claim 1 or 2 or 4 or 5 or 7 or 8 or 9, characterized in that: The brush head has a bristle connecting portion extending toward both ends of the connecting piece; bristles are connected to the bristle connecting portion; The rotary drive assembly drives the brush head and enables the brush head to have a rotary cleaning state of brushing backward.

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