阅读说明：本技术 刷盘安装结构及具有刷盘安装结构的清洁机器人 (Brush disc mounting structure and cleaning robot with same ) 是由 李振 陈博 朱传绪 陈召 刘国中 王生贵 杨玉杯 程昊天 于 2020-07-07 设计创作，主要内容包括：本申请公开了一种刷盘安装结构及具有刷盘安装结构的清洁机器人,涉及机械结构的技术领域。本申请的刷盘安装结构包括驱动件、连接件、伸缩件以及刷盘,驱动件具有主轴；连接件固定连接于主轴上；伸缩件设于连接件上,伸缩件包括能沿主轴的径向方向伸缩的伸缩头；刷盘设有安装孔,安装孔内设有悬挂支撑结构；当连接件相对安装孔沿其轴线方向移动时,伸缩头沿悬挂支撑结构的表面滑动,用于将刷盘锁紧或者脱离连接件。故本申请中通过设置连接件、伸缩件、和悬挂支撑结构将刷盘能拆卸地安装在驱动件上,且结构简单、拆装便利性较高。(The application discloses brush dish mounting structure and have cleaning machines people of brush dish mounting structure relates to mechanical structure's technical field. The brush disc mounting structure comprises a driving part, a connecting part, a telescopic part and a brush disc, wherein the driving part is provided with a main shaft; the connecting piece is fixedly connected to the main shaft; the telescopic piece is arranged on the connecting piece and comprises a telescopic head which can be telescopic along the radial direction of the main shaft; the brush disc is provided with a mounting hole, and a suspension support structure is arranged in the mounting hole; when the connecting piece moves along the axial direction of the connecting piece relative to the mounting hole, the telescopic head slides along the surface of the suspension support structure and is used for locking or disengaging the brush disc from the connecting piece. So install brush dish on the driving piece through setting up connecting piece, extensible member and hanging bearing structure with dismantling in this application, and simple structure, dismouting convenience are higher.)

1. A brush tray mounting structure, comprising:

a drive having a spindle;

the connecting piece is fixedly connected to the main shaft;

the telescopic piece is arranged on the connecting piece and comprises a telescopic head which can be telescopic along the radial direction of the main shaft; and

the brush disc is provided with a mounting hole, and a suspension support structure is arranged in the mounting hole;

when the connecting piece moves along the axis direction of the connecting piece relative to the mounting hole, the telescopic head slides along the surface of the suspension support structure, and the telescopic head is used for locking or separating the brush disc from the connecting piece.

2. The brush tray mounting structure according to claim 1, wherein the suspension support structure includes:

the pressing ring disc is connected to the brush disc and arranged between the brush disc and the driving piece;

the pressure ring disc is provided with a central hole, and the inner diameter of the central hole is smaller than that of the mounting hole;

when the pressure ring disc is positioned at the connecting piece, the telescopic head slides along the surface of the pressure ring disc and is telescopic along the radial direction of the main shaft;

when the brush disc is located at a first preset position, the telescopic head is abutted to the pressure ring disc along the axis direction of the main shaft.

3. The brush disk mounting structure according to claim 2, wherein the pressing ring disk is provided with a first groove at the central hole on a surface facing the driving member; the pressing ring disc is provided with a second groove on the surface departing from the driving piece and positioned at the central hole.

4. The brush tray mounting structure according to claim 2, wherein the suspension support structure further comprises:

the limiting piece comprises a limiting lug, and the limiting lug is convexly arranged on the inner surface of the mounting hole;

when the connecting piece moves relative to the mounting hole along the axis direction of the connecting piece, the telescopic head slides along the surface of the limiting piece;

when the brush disc is located at the second preset position, the telescopic head is abutted to the limiting lug along the axis direction of the main shaft.

5. The brush tray mounting structure according to claim 4, wherein the stopper further comprises:

a guide convex strip which is arranged on the inner surface of the mounting hole in a protruding manner in an inclined manner; and

the first limiting bulge is convexly arranged on the inner surface of the mounting hole and is positioned on one side of the limiting convex block;

when the connecting piece moves along the axis direction of the connecting piece relative to the mounting hole and rotates relatively, the telescopic head approaches to or departs from the limiting convex block along the surface of the guide convex strip;

when the brush disc is located at the second preset position, the telescopic head is abutted to the first limiting bulge along the circumferential direction of the mounting hole.

6. The brush tray mounting structure according to claim 5, wherein the guide ribs include a first rib and a second rib provided at both ends of the limit projection, respectively, the first rib being inclined toward the driving member; the second convex strip inclines towards the direction departing from the driving piece;

the first limiting bulge is arranged on the second convex strip.

7. The brush tray mounting structure according to claim 6, wherein the limiting member further comprises a second limiting protrusion, and the second limiting protrusion is protruded on a surface of the limiting protrusion facing away from the driving member;

when the brush disc is located at the second preset position, the telescopic head is abutted to the second limiting bulge along the circumferential direction of the mounting hole.

8. The brush tray mounting structure according to claim 4, wherein the number of the telescopic heads is plural, and the plural telescopic heads are distributed in a circumferential array around an axis of the connecting member;

the limiting parts are provided with a plurality of limiting parts which respectively correspond to the plurality of telescopic heads.

9. The brush tray mounting structure according to claim 1, wherein the connecting member is provided with a first connecting hole and a second connecting hole communicating with the first connecting hole;

a fastener penetrates through the first connecting hole and is used for connecting the main shaft and the connecting piece together;

the telescopic piece still includes the telescopic link of being connected with the flexible head and the piece that resets that is used for the flexible head to reset, the telescopic link is worn to establish in the second connecting hole.

10. A cleaning robot having a brush tray mounting structure, comprising:

a robot body, and

the brush plate mounting structure according to any one of claims 1 to 9, the brush plate mounting structure being provided on the robot body.

Technical Field

The application relates to the technical field of mechanical structures, in particular to a brush disc mounting structure and a cleaning robot with the same.

Background

The brush disc is used as a working part of the floor cleaning robot, and the brush disc is a vulnerable part which rubs with the ground to be cleaned for a long time when working, so that the brush disc needs to be replaced frequently. In order to replace the brush disc for maintenance and use personnel, the brush disc mounting structure needs to be designed to be easy to assemble and disassemble.

Disclosure of Invention

An object of this application is to provide a brush dish mounting structure and have cleaning machines people of brush dish mounting structure, it can install brush dish on the driving piece with dismantling, and the dismouting convenience is higher.

The embodiment of the application is realized as follows:

a brush disc mounting structure comprises a driving part, a connecting part, a telescopic part and a brush disc, wherein the driving part is provided with a main shaft; the connecting piece is fixedly connected to the main shaft; the telescopic piece is arranged on the connecting piece and comprises a telescopic head which can be telescopic along the radial direction of the main shaft; the brush disc is provided with a mounting hole, and a suspension support structure is arranged in the mounting hole; when the connecting piece moves along the axis direction of the connecting piece relative to the mounting hole, the telescopic head slides along the surface of the suspension support structure, and the telescopic head is used for locking or separating the brush disc from the connecting piece.

In one embodiment, the suspension support structure comprises a pressure ring disc, the pressure ring disc is connected to the brush disc and is arranged between the brush disc and the driving member; the pressure ring disc is provided with a central hole, and the inner diameter of the central hole is smaller than that of the mounting hole; when the pressure ring disc is positioned at the connecting piece, the telescopic head slides along the surface of the pressure ring disc and is telescopic along the radial direction of the main shaft; when the brush disc is located at a first preset position, the telescopic head is abutted to the pressure ring disc along the axis direction of the main shaft.

In an embodiment, the pressing ring disc is provided with a first groove on the surface facing the driving member and located at the central hole; the pressing ring disc is provided with a second groove on the surface departing from the driving piece and positioned at the central hole.

In an embodiment, the suspension support structure further includes a limiting member, the limiting member includes a limiting protrusion, and the limiting protrusion is protruded from an inner surface of the mounting hole; when the connecting piece moves relative to the mounting hole along the axis direction of the connecting piece, the telescopic head slides along the surface of the limiting piece; when the brush disc is located at the second preset position, the telescopic head is abutted to the limiting lug along the axis direction of the main shaft.

In an embodiment, the limiting member further includes a guiding protruding strip and a first limiting protrusion; the first limiting bulge is convexly arranged on the inner surface of the mounting hole and positioned on one side of the limiting convex block and used for blocking the movement of the telescopic head; the guide convex strips are obliquely and convexly arranged on the inner surface of the mounting hole and are connected with the limiting convex blocks or arranged at intervals; when the connecting piece moves along the axis direction of the connecting piece relative to the mounting hole and rotates relatively, the telescopic head approaches to or departs from the limiting convex block along the surface of the guide convex strip; when the brush disc is located at the second preset position, the telescopic head is abutted to the first limiting bulge along the circumferential direction of the mounting hole.

In one embodiment, the guiding protruding strips comprise a first protruding strip and a second protruding strip which are respectively arranged at two ends of the limiting convex block, and the first protruding strip inclines towards the direction close to the driving piece; the second convex strip inclines towards the direction departing from the driving piece; the first limiting bulge is arranged on the second convex strip.

In an embodiment, the limiting member further includes a second limiting protrusion, the second limiting protrusion is convexly disposed on a surface of the limiting protrusion departing from the driving member, wherein when the brush tray is located at a second preset position, the retractable head and the second limiting protrusion abut against each other along a circumferential direction of the mounting hole. In an embodiment, the number of the retractable heads is plural, the plural retractable heads are distributed in a circumferential array around the axis of the connecting member, and the plural limiting members are respectively corresponding to the plural retractable heads.

In one embodiment, the connecting piece is provided with a first connecting hole and a second connecting hole communicated with the first connecting hole; a fastener penetrates through the first connecting hole and is used for connecting the main shaft and the connecting piece together; the telescopic piece still includes the telescopic link of being connected with the flexible head and the piece that resets that is used for the flexible head to reset, the telescopic link is worn to establish in the second connecting hole.

In an embodiment, the brush disk mounting structure further includes a gasket, and the gasket is clamped between the spindle and the connecting member.

In one embodiment, the main shaft is sleeved with a sleeve, the connecting piece is arranged in the sleeve, a flange is arranged on the outer surface of the connecting piece, a spring is sleeved outside the connecting piece, one end of the spring is connected with the flange, and the other end of the spring is connected with the sleeve.

In one embodiment, the mounting hole is internally provided with a fixed ring sheet, and the connecting piece is provided with an arc raised head matched with the fixed ring sheet; when the brush disc is located at the second preset position, the arc raised head is abutted to the fixed ring sheet.

The utility model provides a cleaning machines people with brush dish mounting structure, includes robot body and brush dish mounting structure, brush dish mounting structure be foretell brush dish mounting structure, brush dish mounting structure locates on the robot body.

Compared with the prior art, the beneficial effect of this application is:

the brush disc mounting structure of the application can detachably mount the brush disc on the driving piece by arranging the connecting piece, the telescopic piece and the suspension supporting structure, and is simple in structure and high in dismounting convenience.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

Fig. 1 is a schematic structural view of a brush tray mounting structure according to an embodiment of the present disclosure;

FIG. 2 is a schematic structural diagram of a brush tray mounting structure according to an embodiment of the present disclosure;

FIG. 3 is an exploded view of a brush plate mounting arrangement according to an embodiment of the present application;

FIG. 4 is a schematic structural diagram illustrating a brush tray mounting structure according to an embodiment of the present disclosure;

FIG. 5 is an exploded view of a brush plate mounting structure according to an embodiment of the present application;

FIG. 6 is a schematic structural diagram illustrating a brush plate mounting structure when the brush plate is in a first predetermined position according to an embodiment of the present disclosure;

FIG. 7 is a schematic structural diagram of a brush plate mounting structure when the brush plate is in a second predetermined position according to an embodiment of the present disclosure;

FIG. 8 is a schematic structural view of a brush plate according to an embodiment of the present disclosure;

FIG. 9 is a schematic structural view of a brush plate according to an embodiment of the present disclosure;

fig. 10 is a partial structural view of a brush disk mounting structure according to an embodiment of the present application.

Icon: 1-a brush disc mounting structure; 200-a driver; 210-a main shaft; 211-fixation holes; 220-a sleeve; 230-a gear; 240-motor assembly; 300-a fixed seat; 310-a through hole; 400-a connector; 410-a first connection hole; 420-second connection hole; 430-convex ring; 440-locating holes; 450-a fastener; 460-a flange; 461-shim; 470-a spring; 480-a telescoping piece; 481-telescoping head; 482-a telescoping rod; 483-a reset piece; 490-arc nose; 500-brushing the disc; 500 a-upper surface of the brush tray; 500 b-lower surface of brush plate; 510-mounting holes. 600-hanging a support structure; 610-a press ring disc; 611-a central hole; 612-a first groove; 613-second groove; 620-limit bump; 641-a first limit projection; 621-a second limiting protrusion; 630-guide ribs; 631-a first rib; 632-second ribs; 640-fixing ring pieces; 690-limit stop.

Detailed Description

The terms "first," "second," "third," and the like are used for descriptive purposes only and not for purposes of indicating or implying relative importance, and do not denote any order or order.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present application, it should be noted that the terms "inside", "outside", "left", "right", "upper", "lower", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings or orientations or positional relationships that are conventionally arranged when products of the application are used, and are used only for convenience in describing the application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the application.

In the description of the present application, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements.

The technical solution of the present application will be clearly and completely described below with reference to the accompanying drawings.

A cleaning robot with a brush disc mounting structure comprises a robot body and a brush disc mounting structure 1 (please refer to fig. 1), wherein the brush disc mounting structure 1 is arranged on the robot body. The brush disc mounting structure 1 is provided with or externally connected with a mop head, a plaiting cloth, a sponge, brush hair and other parts for cleaning.

The robot body can include a moving module for driving the brush disc mounting structure 1 to move, and a control module connected with the moving module and the brush disc mounting structure 1 for control.

Please refer to fig. 1, which is a schematic structural diagram of a brush tray mounting structure 1 according to an embodiment of the present application. The brush disc mounting structure 1 can be applied to a floor cleaning robot, a floor cleaning vehicle, a floor cleaning machine, a brush machine and other cleaning equipment. The brush tray mounting structure 1 includes a driving member 200, a connecting member 400, a telescopic member 480, and a brush tray 500. The brush plate 500 can be provided with or externally connected with a mop head, a plait, a sponge, brush hair and other cleaning components, and the brush plate 500 can be connected with a cover for protection. The driving member 200 may be a motor, a cylinder, a hydraulic cylinder, etc., and has a main shaft 210 for providing power, and the main shaft 210 may rotate around its own axis or move along a straight line. The driving member 200 drives the brush plate 500 to move through the connecting member 400 and the telescopic member 480, and the cleaning operation is completed through the cleaning part on the brush plate 500.

The connecting member 400 is fixedly connected to the main shaft 210 by means of a bolt connection, a screw connection, a pin connection, a snap connection, etc., and can move along with the movement of the main shaft 210. The expansion member 480 is provided on the connection member 400, and the expansion member 480 includes an expansion head 481 that is expandable and contractible in a radial direction of the main shaft 210. The brush plate 500 is provided with a mounting hole 510, and a suspension support structure 600 is provided in the mounting hole 510, wherein the mounting hole 510 may be a through hole or a blind hole.

The axis of the connector 400, the axis of the mounting hole 510, and the axis of the main shaft 210 are located on the same straight line. And the axial direction of the link member 400 is defined as up and down, and the direction in which the driving member 200 is directed toward the brush plate 500 is defined as down.

In an operation process, when the connecting member 400 is inserted into the mounting hole 510 or the brush disc 500 is sleeved on the connecting member 400, the retractable head 481 slides along the surface of the suspension support structure 600, and the retractable head 481 can be matched with the suspension support structure 600, so that the brush disc 500 can be locked with the connecting member 400 and the main shaft 210, and the brush disc 500 can move along with the movement of the main shaft 210 to complete the mounting action. When the connector 400 is disengaged from the mounting hole 510, the brush plate 500 is separated from the connector 400 and the main shaft 210, and the brush plate 500 cannot move along with the movement of the main shaft 210, thereby completing the disassembling action.

Therefore, in the present embodiment, the brush plate 500 is detachably mounted on the driving member 200 by providing the connecting member 400, the telescopic member 480, and the suspension support structure 600, and the brush plate is simple in structure and high in convenience of assembly and disassembly.

Please refer to fig. 2, which is a schematic structural diagram of a brush tray mounting structure 1 according to an embodiment of the present application. The driving member 200 is mounted on the fixing base 300. A plurality of driving members 200 and correspondingly a plurality of brush discs 500 may be disposed on one fixing base 300, and in this embodiment, 2 driving members 200 and correspondingly 2 brush discs 500 may be disposed on one fixing base 300.

The fixing base 300 is provided with a through hole 310, and the spindle 210 and the connecting member 400 are inserted into the through hole 310. The driving member 200 includes a motor assembly 240 for driving the motor to rotate, and the motor assembly 240 is connected to the spindle 210 for driving the spindle 210 to rotate. A gear 230 is externally fitted around the main shaft 210. In this embodiment, the driving member 200 is fixed, and the brush plate 500 moves when the brush plate 500 is disassembled. In another embodiment, the brush plate 500 is fixed and the driving member 200 moves when the brush plate 500 is assembled and disassembled.

Please refer to fig. 3, which is an exploded view of a brush tray mounting structure 1 according to an embodiment of the present application. The connector 400 is cylindrical, a first connection hole 410 penetrating the connector 400 and a second connection hole 420 communicating with the first connection hole 410 are formed in the connector 400, the axis of the first connection hole 410 is perpendicular to the axis of the second connection hole 420, and the first connection hole 410 is arranged along the axial direction of the connector 400; the second coupling hole 420 is disposed in a radial direction of the link 400.

A fastener 450 is arranged in the first connecting hole 410 in a penetrating manner, and the fastener 450 is used for connecting the main shaft 210 and the connecting piece 400 together; the expansion piece 480 further comprises an expansion rod 482 and a reset piece 483 which are connected with the expansion head 481, wherein one end of the reset piece 483 is connected with the expansion rod 482, and the other end is connected with the expansion head 481 for resetting. The expansion link 482 is inserted into the second connection hole 420. In this embodiment, the second connection hole 420 is a threaded hole. The expansion piece 480 is a ball-touching screw, the expansion head 481 is a ball head, the expansion link 482 is a threaded rod with a hole, the reset piece 483 is a spring 470, and the expansion head 481 and the reset piece 483 are arranged in the hole of the expansion link 482. The telescopic head 481 can perform linear motion (telescopic motion) along the axis of the telescopic rod 482 and can be reset by the reset piece 483.

The expansion 480 is provided in plurality and the expansion heads 481 are distributed in a circumferential array around the axis of the connector 400. The telescoping head 481 on the telescoping member 480 is used to support the base when the brush plate 500 is secured to the link 400 by the suspension support structure 600. Therefore, more than two telescopic pieces 480 are arranged, so that supporting points are increased, the brush disc 500 can be uniformly stressed due to the circumferential array distribution, and the mounting stability of the brush disc 500 can be improved. In this embodiment, there are 4 telescopic members 480.

The inner wall of the first connection hole 410 is provided with a protruding ring 430, the protruding ring 430 is provided with a positioning hole 440, and the main shaft 210 is provided with a fixing hole 211. The positioning hole 440 is a unthreaded hole, the fixing hole 211 is a threaded hole, the fastener 450 is a bolt, a bolt head of the bolt abuts against the convex ring 430, and a threaded rod of the bolt is arranged in the positioning hole 440 and the fixing hole 211 in a penetrating manner, so that the main shaft 210 and the connecting piece 400 are fixed together.

The brush tray mounting structure 1 further includes a spacer 461, and the spacer 461 is sandwiched between the main shaft 210 and the connecting member 400 for buffering vibration.

The main shaft 210 is sleeved with a sleeve 220, the connecting member 400 is arranged in the sleeve 220, and the sleeve 220 is arranged in the through hole 310 in a penetrating manner. A flange 460 is provided on the outer surface of the connecting member 400, a spring 470 is provided around the connecting member 400, and one end of the spring 470 is connected to the flange 460 and the other end is connected to the sleeve 220 for buffering the vibration.

Please refer to fig. 4, which is a schematic structural diagram of a brush tray mounting structure 1 according to an embodiment of the present application. The suspension support structure 600 comprises a press ring disk 610 and a stop 690, wherein the press ring disk 610 is arranged between the brush disk 500 and the driving member 200, i.e. is connected to the upper surface 500a of the brush disk 500 by means of bolts, pins, welding, etc. The retainer 690 is provided on an inner surface of the mounting hole 510. The mounting hole 510 is a through hole that penetrates the upper surface 500a of the brush plate 500 and the lower surface 500b of the brush plate 500. In this embodiment, the brush plate 500 has a circular ring structure.

Fig. 5 is an exploded view of a brush tray mounting structure 1 according to an embodiment of the present disclosure. Please refer to fig. 6, which is a schematic structural diagram of a brush plate mounting structure 1 according to an embodiment of the present application when a brush plate 500 is at a first preset position. Fig. 7 is a schematic structural view of the brush tray mounting structure 1 when the brush tray 500 is at the second predetermined position according to an embodiment of the present disclosure. The ring pressing disk 610 has a center hole 611, and the inner diameter of the center hole 611 is smaller than the inner diameter of the mounting hole 510.

Referring to fig. 5 and 7, a fixing ring 640 is disposed in the mounting hole 510, and the fixing ring 640 is disposed below the limiting member 690 and the pressing ring 610. The connecting piece 400 is provided with an arc raised head 490 matched with the fixed ring sheet 640; when the brush plate 500 is at the second predetermined position, the arc projection 490 abuts against the fixing ring 640, so that the contact area between the brush plate 500 and the connecting member 400 is increased, and the two are fixed more tightly.

Referring to fig. 5 and 6, in an operation process, the brush disc 500 moves upward, the ring pressing disc 610 reaches the connecting member 400, the ring pressing disc 610 first contacts the expansion piece 480, the expansion head 481 of the expansion piece 480 is in interference fit with the ring pressing disc 610, when the ring pressing disc passes through, the expansion head 481 slides along the surface of the ring pressing disc 610 and is compressed along the radial direction (inward) of the spindle 210, the brush disc 500 continues to move upward, after the ring pressing disc passes through, the expansion head 481 rebounds outward to the original position, and the brush disc 500 reaches a first preset position. At this time, the expansion piece 480 abuts against the pressure ring disk 610, and regulates the movement of the pressure ring disk 610 and the brush disk 500 in the axial direction (vertical direction) of the spindle 210. The brush plate 500 can be temporarily suspended in the air and initially fixed by the interaction of the expansion head 481 and the pressure ring plate 610. When the brush plate 500 needs to be detached, the movement is reversed.

The retainer 690 includes a retaining protrusion 620, a first retaining protrusion 641 and a guiding protrusion 630, wherein the retaining protrusion 620 is protruded on the inner surface of the mounting hole 510. The guide protrusions 630 are protruded from the inner surface of the mounting hole 510 in an inclined arrangement, and are connected to the stopper protrusions 620 or are spaced apart from each other.

The first limiting protrusion 641 is protruded on the inner surface of the mounting hole 510, and is located on one side of the limiting protrusion 620, so as to block the retractable head 481 for limiting the movement of the retractable head 481 along the circumferential direction of the mounting hole 510, that is, for limiting the rotation of the retractable head 481 around the axial direction of the mounting hole 510.

The limiting protrusions 620, the first limiting protrusions 641 and the guiding convex strips 630 may be separately and separately disposed, or may be connected with each other, or may be integrated. In this embodiment, the first limiting protrusion 641, the guiding protrusion 630 and the limiting protrusion 620 are integrated.

Referring to fig. 5 and fig. 7, the limiting members 690 are provided in plural numbers, and respectively correspond to the plural telescopic heads 481, and when the brush tray 500 is at the second predetermined position, the limiting protrusions 620 in the limiting members 690 abut against the telescopic heads 481. In this embodiment, four limiting members 690 are provided, and correspond to the four retractable heads 481 respectively.

Referring to fig. 5 and 7, in an operation process, after the initial fixing, the brush plate 500 continues to move upward, the arc protrusion 490 of the connecting member 400 partially contacts or is about to contact the suspension support structure 600 of the brush plate 500, the brush plate 500 rotates in a first specific direction (i.e., the direction of the guiding protrusion 630 is toward the direction close to the first limiting protrusion 641), and an upward force is applied to the brush plate 500, so that the brush plate 500 and the expansion member 480 relatively move according to a preset direction, the expansion head 481 gradually approaches the limiting protrusion 620, and finally the brush plate 500 is in a second preset position, at which time the expansion member 480 abuts against the limiting protrusion 620, so as to limit the up-and-down movement and the rotation of the brush plate 500 around the first specific direction. The brush plate 500 can be suspended in the air through the interaction of the telescopic head 481 and the limiting convex block 620, and the locking is completed. When the brush plate 500 needs to be detached, the movement is reversed. When the brush tray 500 is cleaned, the main shaft 210 of the driving member 200 always rotates in one direction, and when the main shaft 210 of the driving member 200 rotates the brush tray 500 in a first specific direction (toward a direction close to the first limiting protrusion 641), the brush tray 500 is not dropped due to the limitation of the first limiting protrusion 641.

In another embodiment, the first limiting protrusion 641 may be disposed, or the first limiting protrusion 641 may not be disposed. Referring to fig. 5 and 7, in an operation process, after the initial fixing, the brush disc 500 continues to move upward, the limit protrusion 620 first reaches the joint, the limit protrusion 620 first touches the telescopic member 480, the limit protrusion 620 obstructs the upward movement of the telescopic head 481, when the brush disc passes through, the telescopic head 481 slides along the surface of the limit protrusion 620 and compresses inward, the brush disc 500 continues to move upward, after the brush disc passes through, the telescopic head 481 rebounds outward to the original position, and the brush disc 500 reaches the second preset position. At this time, the expansion member 480 abuts against the limit protrusion 620 to limit the vertical movement of the brush plate 500. The brush plate 500 can be suspended in the air through the interaction of the telescopic head 481 and the limiting convex block 620, and the locking is completed. When the brush plate 500 needs to be detached, the movement is reversed.

Please refer to fig. 8, which is a schematic structural diagram of a brush plate 500 according to an embodiment of the present disclosure. The guiding protrusion 630 includes a first protrusion 631 and a second protrusion 632 respectively disposed at two ends of the limiting protrusion 620. The first protruding strip 631, the limiting protrusion 620 and the second protruding strip 632 are integrated. The sum of the lengths of the four stoppers 690 is greater than the inner circumference of the mounting hole 510, so that the adjacent two guide ribs 630 have an overlapping area as viewed from above.

The first convex strip 631 inclines in a direction (upward) toward the driver 200; the second protrusion 632 is inclined (downward) in a direction away from the driving member 200, and two adjacent guiding protrusions 630 are staggered to form a guide rail for guiding the movement of the telescopic member 480 (see fig. 5), so that the guiding effect is better.

Please refer to fig. 9, which is a schematic structural diagram of a brush plate 500 according to an embodiment of the present disclosure. The fixing ring 640 has four legs connected to the inner surface of the mounting hole 510 and connected to the second protrusion strip 632. The legs occupy a space in the mounting hole 510 to limit the space for the expansion member 480 (see fig. 5) to move.

Please refer to fig. 10, which is a schematic structural diagram of a part of a brush tray mounting structure 1 according to an embodiment of the present application. The pressing ring disk 610 is provided with a first groove 612 on a surface facing the driving member 200 (i.e., an upper surface of the pressing ring disk 610) and located at the central hole 611, the first groove 612 may be a trapezoidal groove or a circular truncated cone groove, and an inner wall of the first groove 612 is an inclined surface inclined downward, so as to facilitate guiding a telescopic motion of a telescopic head 481 (see fig. 6) of the telescopic member 480.

The pressure ring disk 610 is provided with a second groove 613 on the surface facing away from the driver 200, i.e. the lower surface of the pressure ring disk 610, at the central hole 611. When the brush plate 500 is in the first predetermined position (see fig. 6), the retractable head 481 of the retractable member 480 is recessed into the second groove 613, so as to abut against the press ring plate 610.

The limiting member 690 further includes a second limiting protrusion 621, and the second limiting protrusion 621 is disposed on a surface (a lower surface of the limiting protrusion 620) of the limiting protrusion 620 facing away from the driving member 200 and protrudes downward.

When the brush tray 500 is at the second preset position (please refer to fig. 7), the retractable head 481 abuts against the second limiting protrusion 621 along the circumferential direction of the mounting hole 510, and the second limiting protrusion 621 is used for limiting the movement of the retractable head 481 along the circumferential direction of the mounting hole 510, that is, limiting the rotation of the retractable head 481 around the axial direction of the mounting hole 510.

The second stopper protrusion 621 may be a cylindrical bar, or a dot. Or may be circular. In this embodiment, a retainer 690 includes a first protrusion 631, a retaining bump 620, a second protrusion 632, a first retaining protrusion 641, and a second retaining protrusion 621.

In this embodiment, the second limiting protrusion 621 and the second protruding strip 632 are respectively disposed on two sides of the retractable head 481, so as to limit the movement of the retractable head 481 in multiple directions, so that the brush plate 500 is more difficult to disengage after being mounted in place, and the brush plate 500 is more stably mounted and fixed.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.