CN219206728U

CN219206728U - Sweeping robot structure

Info

Publication number: CN219206728U
Application number: CN202223188541.0U
Authority: CN
Inventors: 陈勇; 侯伟; 林兆庆; 潘阳; 李建刚
Original assignee: Wocao Technology Shenzhen Co ltd
Current assignee: Wocao Technology Shenzhen Co ltd
Priority date: 2022-11-29
Filing date: 2022-11-29
Publication date: 2023-06-20
Anticipated expiration: 2032-11-29

Abstract

The utility model belongs to the technical field of sweeping robots, and particularly relates to a sweeping robot structure, which comprises a sweeping robot body and a sweeping device, wherein the bottom of the sweeping robot body is provided with a mounting groove, and the sweeping device is detachably arranged in the mounting groove; the floor cleaning device is used for replacing the floor cleaning device arranged in the mounting groove; a first connecting piece is arranged at the bottom of the sweeping robot body or/and in the mounting groove; the floor mopping support is provided with a second connecting piece, and the second connecting piece is connected with the first connecting piece, so that the floor mopping support is fixed at the bottom of the floor sweeping robot body and covers the mounting groove. Therefore, the floor sweeping robot can replace the existing floor sweeping robot to respectively set the floor sweeping and sweeping devices at the bottom of the floor sweeping robot, so that the area of the bottom of the floor sweeping robot can be reduced, the appearance structure of the floor sweeping robot is smaller, and the space occupation amount of the floor sweeping robot is reduced.

Description

Sweeping robot structure

Technical Field

The utility model belongs to the technical field of sweeping robots, and particularly relates to a sweeping robot structure.

Background

The floor sweeping robot, also called automatic sweeping machine, intelligent dust collector, robot dust collector, etc., is one kind of intelligent household appliance and can complete floor cleaning automatically inside room with certain artificial intelligence. At present, a plurality of sweeping robots have the functions of sweeping and mopping, so that the actual requirements for the sweeping robots can be well met.

For example, in chinese patent document with publication number CN114916868A, a screw lifting floor mopping device and a floor sweeping machine are disclosed, and specifically, the screw lifting floor mopping device includes a housing, a floor mopping mechanism and a lifting mechanism; the mopping mechanism is arranged on the shell and comprises a mop module and a mopping driving assembly for driving the mop module to vibrate to mop the floor; the lifting mechanism is arranged in the shell and comprises a lifting drive and a transmission piece which are fixedly connected with the shell, and a lifting piece which is movably connected with the shell; through set up the screw rod on the mop module, lifting piece and screw rod meshing are connected, and lift drive driving medium drives lifting piece and rotates, and pivoted lifting piece promotes the screw rod and goes up and down in order to drive mop module and go up and down, and lift drive and driving medium all set up in one side of lifting piece, can reduce elevating system's occupation height to avoid increasing or even reducing the height of sweeping the floor machine, enlarge usable range, can clean the ground that the lower device of chassis covered, and elevating system simple structure is convenient for make installation and maintenance. Further, it is clear from the drawings of the patent document that the floor mopping device is also provided with a floor sweeping device, which is provided at the bottom of the housing. Therefore, the floor mopping device disclosed in the patent document has the functions of mopping and sweeping at the same time, and realizes the integrated structure of mopping and mopping.

However, the existing sweeping and mopping integrated structural robot can meet the requirement that a user can sweep garbage and need to clean the ground, but the sweeping and mopping integrated structural robot is larger in size and occupies a large amount of space due to the fact that the mop structure and the cleaning roller structure are arranged at the bottom of the sweeping robot respectively. In addition, the floor mopping device is driven to lift in a screw lifting mode, so that the floor mopping device is complex in structure and high in manufacturing and maintaining cost.

Disclosure of Invention

The utility model aims to provide a sweeping robot structure, which solves the problems of large size, space occupation and high cost of the existing sweeping and mopping integrated robot.

In order to achieve the above purpose, the sweeping robot structure provided by the embodiment of the utility model comprises a sweeping robot body and a sweeping device, wherein the bottom of the sweeping robot body is provided with a mounting groove, and the sweeping device is detachably arranged in the mounting groove; the floor sweeping device is arranged in the mounting groove; the bottom of the floor sweeping robot body of the floor mopping frame or/and the mounting groove are provided with a first connecting piece; the floor mopping support is provided with a second connecting piece, and the second connecting piece is connected with the first connecting piece, so that the floor mopping support is fixed at the bottom of the floor sweeping robot body and covers the mounting groove.

Further, one end of the mopping support is tilted upwards to form a mopping guide part.

Further, the first connecting piece comprises a clamping groove or a clamping buckle in the bottom of the sweeping robot body or/and the mounting groove, and the second connecting piece comprises a clamping buckle or a clamping groove arranged on the mopping support, and the clamping groove is used for being buckled with the clamping buckle.

Further, the mounting groove is provided with two opposite inner side walls, the clamping groove comprises a first clamping groove arranged on one inner side wall and a second clamping groove arranged on the other inner side wall, the buckle comprises a first buckle and a second buckle which are arranged on the mopping support, the first buckle is used for being buckled with the first clamping groove, and the second buckle is used for being buckled with the second clamping groove; the first buckle and/or the second buckle are/is elastic buckles.

Further, the buckle comprises an elastic arm, the elastic arm extends obliquely from one end of the mopping support, and the elastic arm is provided with a back-off buckle which is buckled with the clamping groove.

Further, the floor mopping frame comprises a mounting frame and an extension plate, wherein the mounting frame is used for being mounted in the mounting groove, and the extension plate is located outside the mounting groove and extends from the mounting frame to the central bottom of the floor sweeping robot body.

Further, a magic tape is arranged on the bottom surface of the extension board and is used for attaching the mop or the paper towel on the extension board.

Further, the first buckle sets up the one end at the mounting bracket, and the second buckle sets up the junction at extension board and mounting bracket.

Further, a magic tape or a magnet or a clamping part is arranged on the bottom surface of the mopping support and used for attaching mopping cloth or paper towels to the bottom of the mopping support.

Further, the magic tape is detachably mounted on the mopping support.

Further, the sweeping device comprises a sweeping support and a rolling brush, and the rolling brush is arranged in the mounting groove; the third connecting piece is used for being buckled with the first connecting piece, so that the limit rolling brush of the sweeping support is arranged in the mounting groove; the third connecting piece and the second connecting piece have the same structure.

The above technical solutions in the sweeping robot structure provided by the embodiments of the present utility model have at least the following technical effects:

1. when the robot is required to sweep the floor, the sweeping device is arranged in the mounting groove, and the sweeping mechanism can complete the sweeping of the floor under the driving of the body of the robot. When the floor is required to be mopped, the floor sweeping device is detached from the mounting groove, the floor sweeping device is replaced to the bottom of the floor sweeping robot body, specifically, a mop or a paper towel is attached to the bottom of the floor sweeping support firstly, and then the mop or the paper towel is connected with the first connecting piece at the bottom of the floor sweeping robot body through the second connecting piece of the floor sweeping support, so that the floor sweeping support is fixed at the bottom of the floor sweeping robot body, and the floor sweeping robot can realize floor sweeping when the floor sweeping robot does not need to sweep floor. When the floor sweeping device needs to be replaced, the floor mopping frame is detached for replacement. Therefore, the mutual replacement of the sweeping device and the mopping device can be realized. The floor sweeping robot has the advantages that the floor sweeping and sweeping devices are arranged at the bottoms of the floor sweeping robots respectively and independently, so that the area of the bottoms of the floor sweeping robots can be reduced, the overall size of the floor sweeping robots can be reduced, the appearance structure is smaller, and the space occupation amount of the floor sweeping and sweeping devices is reduced.

2. Through the direct replacement of floor-sweeping device with the device of sweeping the floor, need not to set up the mechanism that drives the device of sweeping the floor and go up and down for this robot structure of sweeping the floor is simpler, has not only reduced the cost of production, and can also reduce the cost of using and maintaining.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a structural diagram of a sweeping device provided by an embodiment of the utility model.

Fig. 2 is a block diagram of a floor sweeping robot provided by an embodiment of the present utility model.

Fig. 3 is a block diagram of a body part of the sweeping robot according to the embodiment of the present utility model.

Fig. 4 is a cross-sectional view of a body portion of a sweeping robot provided in an embodiment of the present utility model.

Fig. 5 is a diagram illustrating another side structure of a body portion of the sweeping robot according to an embodiment of the present utility model.

Fig. 6 is a block diagram of a floor mopping device of a floor sweeping robot according to an embodiment of the present utility model.

Fig. 7 is a block diagram of the inner side of the floor cleaning device of the floor cleaning robot according to the embodiment of the present utility model.

Fig. 8 is a structural diagram of a floor mopping bracket of a floor sweeping robot provided by an embodiment of the utility model.

Fig. 9 is a structural diagram of a sweeping device of a sweeping robot provided by an embodiment of the present utility model.

Fig. 10 is a diagram illustrating an inner side structure of a sweeping device of a sweeping robot according to an embodiment of the present utility model.

Fig. 11 is a cross-sectional view of a sweeping device of a sweeping robot according to an embodiment of the present utility model.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and intended to illustrate embodiments of the utility model and should not be construed as limiting the utility model.

In the description of the embodiments of the present utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the embodiments of the present utility model and simplify description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the embodiments of the present utility model, the meaning of "plurality" is two or more, unless explicitly defined otherwise.

In the embodiments of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like are to be construed broadly and include, for example, either permanently connected, removably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present utility model will be understood by those of ordinary skill in the art according to specific circumstances.

In an embodiment of the present utility model, referring to fig. 1 and 2, the structure of the sweeping robot provided in this embodiment includes a sweeping robot body 100, a sweeping device 200 and a mopping device 300. A mounting groove 101 is provided at the bottom of the robot body 100, and the sweeping device 200 is detachably mounted in the mounting groove 101. And the floor-scrubbing apparatus 300 may be used to replace the floor-scrubbing apparatus 200 disposed within the mounting slot 101. Specifically, when the floor sweeping is required, the floor sweeping device 200 is installed in the installation groove 101, so that the floor sweeping device 200 can be driven to operate when the floor sweeping robot works, thereby sweeping the floor. When the floor cleaning is required, the floor cleaning device 200 is detached from the installation groove 101, and the floor cleaning device 300 is installed at the bottom of the floor cleaning robot body 100. Therefore, the sweeping robot structure can realize the mutual replacement of the sweeping device 200 and the mopping device 300. The device that will drag ground and sweep the floor with current robot of sweeping floor sets up in the bottom of robot of sweeping the floor respectively, and this application can reduce the area of robot bottom of sweeping the floor, and then can reduce the overall dimension of robot of sweeping the floor for its external structure is more small and exquisite, reduces its space occupation volume.

Referring to fig. 6 to 8, the floor cleaning device 300 includes a floor cleaning frame 310, wherein the floor cleaning frame 310 is used to replace the floor cleaning device 200 disposed in the installation groove 101. The bottom of the mop holder 310 has a fitting plane 311, and a mop 320 or a towel for mopping can be fitted on the fitting plane 311. Specifically, the mop 320 or the paper towel of the mop can be fixed on the mop support 310 in a clamping manner, can be fixed in a magnetic attraction manner, and can be fixed at the bottom of the mop support 310 by using a magic tape. The components of the paper towel are non-woven fabrics, plant fibers and pure cotton, and the paper towel can be disposable paper towel, when the paper towel is used for mopping the floor, the paper towel can be taken down from the attaching plane of the mopping support 310 after the paper towel is dirty, and then the other paper towel is replaced and fixed at the bottom of the mop support 310 in a clamping or magnetic or magic tape mode.

More specifically, a hook and loop fastener or a magnet or a clamping part may be installed on the bottom surface of the mop support 310, for attaching the mop 320 or the towel to the bottom of the mop support 310. And the magic tape is detachably installed at the bottom of the mopping support 310, so that it is convenient to attach paper towels or mops loose due to dirt on the magic tape for a period of time, and at this time, another magic tape can be replaced again.

Referring to fig. 1, 2 and 8, a first connector 110 is disposed at the bottom of the robot body 100 and/or in the mounting groove 101. The second connecting piece 312 is provided on the floor mopping bracket 310, and the second connecting piece 312 is connected with the first connecting piece 110, so that the floor mopping bracket 310 can be fixed at the bottom of the floor sweeping robot body 100 and cover the installation groove 101. When the floor mopping device 300 is required to be installed at the bottom of the floor sweeping robot body 100, the mop 320 or the paper towel at the bottom of the floor mopping support 310 is attached to the attaching plane 311, and then the second connecting piece 312 of the floor mopping support 310 is connected with the first connecting piece 110, so that the floor mopping support 310 is fixed at the bottom of the floor sweeping robot body 100, and the mop 320 or the paper towel at the bottom of the floor mopping support 310 is contacted with the ground in the running process of the floor sweeping robot, so that the floor is cleaned. Because the floor cleaning device 300 and the floor cleaning device 200 can be directly replaced, a mechanism for driving the floor cleaning device to lift is not required, so that the floor cleaning robot is simpler in structure, the production cost is reduced, and the use and maintenance cost is also reduced. Further, the towel of this embodiment may be disposable, and the towel may be replaced after a period of use, or after each use. Mop 320 of this embodiment is typically replaced after cleaning. Further, one end of the floor mopping support 310 is tilted upward to form a floor mopping guide 313. Therefore, the floor mopping guide 313 can play a good guiding role in the floor mopping process.

Referring to fig. 3, 4 and 9-11, a driving member 120 is disposed in the robot body 100, a first end 102 and a second end 103 are disposed in the mounting groove 101, the first end 102 is provided with a connector 121, the connector 121 is connected with the driving member 120 and used for driving the connector 121 to rotate, and a supporting step 104 is disposed at the second end 103 of the mounting groove 101. The floor sweeping device 200 includes a floor sweeping support 210, a roller brush 220, and a scraper 230. One end of the roller brush 220 is provided with a connection portion 221 for connection with the connection head 121, and the other end is provided with a support portion 222 for rotatably supporting on the support step 104. The sweeping support 210 is provided with a third connecting piece 211, which is used for being buckled with the first connecting piece 110, so that the sweeping support 210 limits the rolling brush 220 in the mounting groove 101. The ground sweeping frame 210 is further provided with a clearance groove 212 for avoiding the rolling brush 220, so that a brush part of the rolling brush 220 can pass through the clearance groove 212 to contact with the ground. The scraper 230 is provided at one side of the floor sweeping frame 210, and the scraper 230 is provided with a scraper portion 231 protruding from the floor sweeping frame 210. In the present embodiment, when the floor sweeping device 200 is installed in the installation groove 101, the connection part 221 of the roller brush 220 is connected with the connection head 121, and the support part 222 is supported on the support step 104; since the third connection piece 211 on the sweeping support 210 is connected with the first connection piece 110, the sweeping support 210 is fixed at the bottom of the sweeping robot body 100 and the rolling brush 220 is limited in the installation groove 101. Accordingly, the connection head 121 may be rotated by the driving member 120 to thereby drive the rolling brush 220 to roll on the ground, thereby bringing up the garbage on the ground, and also scraping up the dust and the like on the ground by the scraping portion 231 of the scraper 230, and sucking up the dust and other garbage into the sweeper body 100 by the sweeper body 100. As to how the sweeping robot adsorbs the garbage to the inside of the body, it is a known technology in the art, so the description is omitted in this embodiment.

Specifically, the first connector 110 includes a clamping groove in the bottom of the robot body 100 or/and the mounting groove 101. The second connecting piece 312 includes a buckle disposed on the floor mopping bracket 310, where the buckle is connected with the clamping groove in a buckling manner, so that the floor mopping bracket 310 is buckled at the bottom of the floor sweeping robot body 100. Alternatively, the first connector 110 includes a catch in the bottom of the robot body 100 or/and the mounting slot 101. The second connecting piece 312 includes a clamping groove disposed on the floor mopping bracket 310, and the clamping groove is used for being buckled and connected with the buckle.

Further, referring to fig. 10 and 11, the floor sweeping frame 210 includes a frame 213 and a pressing plate 214, the bottom of the frame 213 is provided with a connection groove 215, the scraper 230 has a mounting portion 232 disposed in the connection groove 215, the scraper portion 231 protrudes downward from one side of the mounting portion 232 out of the connection groove 215, the bottom of the mounting portion 232 is provided with a limit groove 233, and the pressing plate 214 is detachably fixed to the bottom of the connection groove 215. Specifically, the pressing plate 214 is locked at the bottom of the connecting groove 215 by using a screw. The pressing plate 214 is provided with a limit convex strip 216 which is clamped into the limit groove 233. The scraper 230 may be locked to the bottom of the frame 213 by the pressing plate 214.

Further, an inclined surface is provided on one side wall of the connecting groove 215, and one side of the mounting portion 232 is attached to the inclined wall, so that the spatula portion 231 is inclined and extended downward. In this embodiment, the locking area of the pressing plate 214 to the scraper 230 can be increased, and the locking force can be increased. The problem of loosening or detachment of the scraper 230 can be avoided when the ground is scraped by the scraper 230.

In this embodiment, in order to achieve that both the second connector 312 and the third connector 211 can be connected with the first connector 110 in a matching manner, the third connector 211 and the second connector 312 have the same snap structure.

Further, referring to fig. 3 to 5, the mounting groove 101 has two opposite inner side walls, and the first connecting member 110 has a clamping groove structure, which includes a first clamping groove 111 disposed on one inner side wall and a second clamping groove 112 disposed on the other inner side wall. The second connecting piece 312 is a fastening structure, and includes a first fastening buckle 314 and a second fastening buckle 315 disposed on opposite sides of the floor bracket 310, where the first fastening buckle 314 is used for fastening with the first fastening slot 111, and the second fastening buckle 315 is used for fastening with the second fastening slot 112; the first catch 314 and/or the second catch 315 are elastic catches. Therefore, the first buckle 314 and/or the second buckle 315 can be elastically clamped into the corresponding clamping groove by the elastic buckle, so as to realize the detachable buckling.

Further, referring to fig. 6 to 8, the first catch 314 includes a resilient arm 3140 extending to one side of the floor stand 310. Specifically, the elastic arm 3140 is an extension inclined from one end of the mopping support 310. The elastic arm 3140 is provided with a back-off 3141 on the outer side thereof, and is engaged with the first engaging groove 111. In this embodiment, when the floor mopping bracket 310 is assembled to the bottom of the floor sweeping robot body 100, the second buckle 315 is first snapped into the second clamping groove 112, and then the back-off 3141 is snapped into the first clamping groove 111 by the elasticity of the elastic arm 3140, so that the floor mopping bracket 310 is assembled to the bottom of the floor sweeping robot body 100. When the floor stand 310 needs to be detached, the elastic arm 3140 is pressed to disengage the back button 3141 from the first locking groove 111, and the floor stand 310 can be detached as a whole.

Further, referring to fig. 6, the bottom end of the elastic arm 3140 extends to the top of the mopping frame 310, and the other end extends obliquely downward. In this embodiment, the free end of the elastic arm 3140 is the operation end facing the human body, so that the user can press the elastic arm 3140 conveniently. Further, the third connecting member 211 and the second connecting member 312 are connected to the first connecting member 110 in the same manner and structure.

Further referring to fig. 6, the mopping frame 310 includes a mounting bracket for coupling within the mounting slot 101 and an extension plate 316. The extension plate 316 is located outside the installation groove 101 and extends from one side of the installation frame toward the center bottom of the robot body 100. Therefore, the area of the attaching plane 101 can be increased by the extension plate 316, so that the area of the mop cloth 320 can be increased, and the mopping effect can be enhanced.

Still further, a first buckle 314 is disposed at one end of the mounting frame, and a second buckle 315 is disposed at the connection portion between the extension plate 316 and the mounting frame. In addition, a magic tape can be arranged on the bottom surface of the extension plate 316 for attaching the mop or the paper towel to the extension plate 316, so as to prevent the mop or the paper towel at the front end of the sweeping robot from falling off from the mopping support in the mopping process _。

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims

1. The sweeping robot structure comprises a sweeping robot body and a sweeping device, wherein an installation groove is formed in the bottom of the sweeping robot body, and the sweeping device is detachably installed in the installation groove; the floor cleaning device is characterized by further comprising a floor cleaning bracket, wherein the floor cleaning bracket is used for replacing a floor cleaning device arranged in the mounting groove; a first connecting piece is arranged at the bottom of the sweeping robot body or/and in the mounting groove; the floor mopping support is provided with a second connecting piece, and the second connecting piece is connected with the first connecting piece, so that the floor mopping support is fixed at the bottom of the floor sweeping robot body and covers the mounting groove.

2. The sweeping robot structure of claim 1, wherein: one end of the mopping support is tilted upwards to form a mopping guide part.

3. The sweeping robot structure of claim 1, wherein: the first connecting piece comprises a clamping groove or a clamping buckle arranged at the bottom of the sweeping robot body or/and in the mounting groove, the second connecting piece comprises a clamping buckle or a clamping groove arranged on the mopping support, and the clamping groove is used for being buckled with the clamping buckle.

4. A sweeping robot structure according to claim 3, wherein: the mounting groove is provided with two opposite inner side walls, the clamping groove comprises a first clamping groove arranged on one inner side wall and a second clamping groove arranged on the other inner side wall, the buckle comprises a first buckle and a second buckle which are arranged on the mopping support, the first buckle is used for being buckled with the first clamping groove, and the second buckle is used for being buckled with the second clamping groove; the first buckle and/or the second buckle is/are elastic buckle.

5. A sweeping robot structure according to claim 3, wherein: the buckle comprises an elastic arm, the elastic arm extends from one end of the mopping support in an inclined mode, an inverted buckle is arranged on the elastic arm, and the inverted buckle is buckled with the clamping groove.

6. The structure of the sweeping robot according to any one of claims 1 to 3 and 5, wherein: the mopping frame comprises a mounting frame and an extension plate, wherein the mounting frame is used for being mounted in the mounting groove, and the extension plate is located outside the mounting groove and extends from the mounting frame to the central bottom of the sweeping robot body.

7. The sweeping robot structure of claim 6, wherein: and the bottom surface of the extension plate is provided with a magic tape for attaching a mop or a tissue to the extension plate.

8. The sweeping robot structure of claim 4, wherein: the mopping frame comprises a mounting frame and an extension plate, wherein the mounting frame is used for being mounted in the mounting groove, and the extension plate is located outside the mounting groove and extends from the mounting frame to the central bottom of the sweeping robot body.

9. The sweeping robot structure of claim 8, wherein: the first buckle sets up the one end of mounting bracket, the second buckle sets up the extension board with the junction of mounting bracket.

10. The robot cleaner structure according to any one of claims 1 to 5, wherein: the bottom surface of the mopping support is provided with a magic tape or a magnet or a clamping part, and the magic tape or the magnet or the clamping part is used for attaching a mop or a paper towel to the bottom of the mopping support.

11. The sweeping robot structure of claim 10, wherein: the magic tape is detachably arranged on the mopping support.

12. The robot cleaner structure according to any one of claims 1 to 5, wherein: the floor sweeping device comprises a floor sweeping support and a rolling brush, and the rolling brush is arranged in the mounting groove; the third connecting piece is arranged on the floor sweeping frame and is used for being buckled with the first connecting piece, so that the floor sweeping frame limits the rolling brush to be installed in the installation groove; the third connecting piece and the second connecting piece are identical in structure.