CN214906399U - Pipeline connecting mechanism of dust collector floor brush and dust collector floor brush - Google Patents

Abstract

The utility model discloses a pipeline connecting mechanism of a dust collector floor brush and the dust collector floor brush, which comprises a hose assembly and at least one connecting unit, wherein the hose assembly comprises a connecting hose with air tightness and a spiral rigid supporting piece, the rigid supporting piece is supported on the inner wall of the connecting hose to form a first internal thread structure, and the rigid supporting piece extrudes the inner wall of the connecting hose to form a first external thread structure on the outer wall of the connecting hose; the connecting unit is provided with a second external thread structure or a second internal thread structure; the first internal thread structure of hose assembly carries out threaded connection with the second external thread structure on the linkage unit, or the first external thread structure of hose assembly carries out threaded connection with the second internal thread structure on the linkage unit, and the advantage is not only that it is more convenient to make the dismantlement installation, still makes the reliability and the gas tightness reinforcing of connecting.

Description

Pipeline connecting mechanism of dust collector floor brush and dust collector floor brush

Technical Field

The utility model relates to a dust catcher field especially relates to a pipeline coupling mechanism and dust catcher's scrubbing brush of dust catcher scrubbing brush, and this scrubbing brush is used for the contact to treat clean surface in order to absorb and clear up the dust.

Background

With the improvement of the living standard of people, the dust collector gradually replaces manpower for cleaning, and becomes one of the important common electric appliances in the life of people.

In the prior art, a suction opening of a main machine of a dust collector is usually connected with a hollow rigid extension tube, and the front end of the extension tube can be selectively matched with various accessories suitable for different objects to be cleaned. Wherein the floor brush is used as the most central accessory in daily cleaning of floors and carpets.

In the prior art, the floor brush comprises a floor brush body and a pipe joint, wherein the rear end of the pipe joint is usually connected with a rigid extension pipe, and the front end of the pipe joint is connected with the floor brush body through a hose. When the floor brush of the dust collector works, the main body of the floor brush longitudinally advances along the width direction for cleaning. Because of the arrangement of the flexible hose, the user changes the relative angle of the extension pipe and the floor brush main body, thereby being convenient for the floor brush to flexibly move on the floor to be cleaned.

For example, the application publication No. CN105266713A discloses an air inlet cavity of a hose connecting floor brush main body, the rear end of the hose is connected with a rotary joint, a rotary joint clamping ring can rotatably connect a floor brush connecting pipe with the rotary joint, and the rotary joint is arranged on a rotary joint seat.

The utility model discloses a dust catcher scrubbing brush like application publication No. CN103919508A, and the gas outlet of the casing is connected with the air duct, and the front end of air duct rear end coupling hose, the front end of the pipeline portion of connecting piece is connected to the rear end of hose, and the pipeline portion rear end and the elbow fitting of connecting piece are connected, and the rear roller is connected in the interface part both sides on the pipeline portion lateral surface of connecting piece.

The inventor finds in practice that the hose and the floor brush main body or other connecting pieces have the problems of loose connection and poor air tightness, the hose is easy to fall off, and the possibility of air leakage exists, so that the tightness of the preorder channel of the dust collector is influenced, the dust collecting capacity of the dust collector is reduced,

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a pipeline connecting mechanism of a dust collector floor brush which is better in air tightness and higher in connection strength is provided, and the dust collector floor brush with the pipeline connecting mechanism of the dust collector floor brush is further provided.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: the pipeline connecting mechanism of the dust collector floor brush is characterized by comprising a hose assembly and at least one connecting unit, wherein the hose assembly comprises a connecting hose with air tightness and a spiral rigid supporting piece, the rigid supporting piece supports the inner wall of the connecting hose to form a first internal thread structure, and the rigid supporting piece extrudes the inner wall of the connecting hose to form a first external thread structure on the outer wall of the connecting hose;

the connecting unit is provided with a second external thread structure or a second internal thread structure;

the first internal thread structure of the hose assembly is in threaded connection with the second external thread structure on the connecting unit, or the first external thread structure of the hose assembly is in threaded connection with the second internal thread structure on the connecting unit.

The utility model provides a further preferred technical scheme who above-mentioned technical problem adopted is: the connecting unit is a floor brush main body, an airflow channel is arranged in the floor brush main body, an interface part with a circular cross section is arranged at the tail end of the airflow channel, the second external thread structure is arranged outside the interface part, and the hose assembly is in threaded sleeve joint outside the interface part.

The utility model provides a further preferred technical scheme who above-mentioned technical problem adopted is: the floor brush main body comprises a bottom plate, the bottom plate comprises a transverse part and a vertical part which are distributed in a T shape, the airflow channel is located above the transverse part, an interface part of the airflow channel extends backwards and is located on the front side of the vertical part, and the hose assembly is laid along the vertical part and is in butt joint with the interface part.

The utility model provides a further preferred technical scheme who above-mentioned technical problem adopted is: the connecting unit is a connecting component connected with an extension pipe of the dust collector main machine, the connecting component is provided with a sleeve joint part connected with the hose component, the sleeve joint part is internally provided with a second internal thread structure, and the hose component is in threaded sleeve joint in the sleeve joint part.

The utility model provides a further preferred technical scheme who above-mentioned technical problem adopted is: the inner wall of the sleeve joint part is provided with a first thread convex rib group and a second thread convex rib group which are mutually spaced in the radial direction, and the first thread convex rib group and the second thread convex rib group form a second internal thread structure.

The utility model provides a further preferred technical scheme who above-mentioned technical problem adopted is: the connecting hose is made of plastic through blow molding, the rigid supporting piece is a metal spiral spring, and the hose assembly can contract and bend along the axis.

The utility model provides a further preferred technical scheme who above-mentioned technical problem adopted is: the airflow channel is formed by butting a front channel body which is formed by rising upwards from the bottom plate and is provided with an opening at the rear end with a rear channel body which is detachably butted at the rear side of the front channel body, the front channel body is formed by enclosing a first inclined surface at the front side and second inclined surfaces at two sides, and the interface part is positioned on the rear channel body.

The utility model provides a further preferred technical scheme who above-mentioned technical problem adopted is: the butt joint department of the front channel body and the rear channel body is provided with a plurality of pairs of buckle structure components, each buckle structure component comprises a clamping protrusion positioned on the front channel body and a clamping ring positioned on the rear channel body.

The utility model provides a further preferred technical scheme who above-mentioned technical problem adopted is: the rear wall of the rear channel body is provided with a longitudinal positioning groove, the bottom plate is provided with a positioning convex column matched with the longitudinal positioning groove, and the convex column is inserted into the positioning groove to play a role in positioning and supporting the rear channel body.

The utility model discloses another theme does: the dust collector floor brush comprises a pipeline connecting mechanism of the dust collector floor brush.

Compared with the prior art, the utility model has the advantages that through supporting a spiral helicine rigid support piece at the coupling hose inner wall to form first internal thread structure and first external screw thread structure on hose assembly, be equipped with the second external screw thread structure or the second internal thread structure that match with it on the linkage unit simultaneously, thereby realized hose assembly and linkage unit's threaded connection, not only make the dismantlement installation more convenient, still make the reliability and the gas tightness reinforcing of connecting.

Drawings

The present invention will be described in further detail below with reference to the drawings and preferred embodiments, but those skilled in the art will appreciate that the drawings are only drawn for the purpose of explaining the preferred embodiments, and therefore should not be taken as limiting the scope of the present invention. Furthermore, unless specifically stated otherwise, the drawings are merely schematic representations based on conceptual representations of elements or structures depicted and may contain exaggerated displays and are not necessarily drawn to scale.

FIG. 1 is a first schematic view of a floor brush of a vacuum cleaner of the present invention;

FIG. 2 is a second schematic view of the floor brush of the vacuum cleaner of the present invention;

FIG. 3 is a third schematic view of the floor brush of the vacuum cleaner of the present invention;

FIG. 4 is a fourth schematic view of the floor brush of the vacuum cleaner of the present invention;

FIG. 5 is an internal structure view of the floor brush of the vacuum cleaner of the present invention;

fig. 6 is an enlarged view of the structure of fig. 5 according to the present invention;

FIG. 7 is an exploded view of the floor brush of the vacuum cleaner of the present invention;

FIG. 8 is an exploded view II of the floor brush of the vacuum cleaner of the present invention;

FIG. 9 is a first schematic view showing a standing state of the floor brush of the vacuum cleaner of the present invention;

FIG. 10 is a second schematic view showing the standing state of the floor brush of the vacuum cleaner of the present invention;

fig. 11 is a cross-sectional view taken at S-S of fig. 10 in accordance with the present invention;

FIG. 12 is a schematic view of a hose assembly of the present invention;

fig. 13 is a schematic view of a first connection tube of the present invention;

fig. 14 is a schematic view of a second connection pipe according to the present invention.

Detailed Description

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate that the description is illustrative only, and is not to be construed as limiting the scope of the invention.

It should be noted that: like reference numerals refer to like items in the following figures, and thus, once an item is defined in one figure, it may not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the utility model is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element to be referred must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

The embodiment provides dust collection equipment which is characterized by comprising a dust collection main machine, an extension pipe arranged at one end of an air inlet of the dust collection main machine and a dust collector floor brush connected to the tail end of the extension pipe.

As shown in FIGS. 1 to 4, the floor brush for a vacuum cleaner comprises a floor brush body 100 provided with an air inlet cavity 1, a base 200 provided at the rear side of the floor brush body 100, and a connection pipe assembly 300.

The connecting pipe assembly 300 includes a hose assembly 301 and a connecting assembly 302 for controlling the rotation of the hose assembly 301, the front end of the base 200 is provided with an airflow channel communicated with the air inlet cavity 1, the front end of the hose assembly 301 is butted with the airflow channel, and the rear end of the hose assembly 301 is connected with the connecting assembly 302.

It should be noted that, in the present embodiment, the rear end of the connection component 302 is connected to an extension pipe, which not only movably connects the floor brush main body 100 and the extension pipe, but also enables the air chamber of the hose component 301 and the air chamber of the extension pipe to communicate with each other, so as to realize the transportation of the air flow.

As shown in fig. 5, 6, and 9-11, the rear side of the base 200 is provided with two side walls 201, a cavity for the hose assembly 301 to rotate up and down is formed between the two side walls 201, the front end of the connecting assembly 302 is provided with two movable connecting portions 11, and the movable connecting portions 11 are coupled to the side walls 201, so that the connecting assembly 302 can rotate up and down around the coupling portions on the side walls 201, thereby controlling the rotation of the hose assembly 301 and simultaneously realizing the rotational connection between the extension pipe and the ground brush.

Here, it should be understood that, during the dust suction process, the hose assembly 301 is forced to oscillate due to the negative pressure, the base 200 provides a position for erecting the hose assembly 301, and the connecting assembly 302 provides a limiting support for the hose assembly 301, so that the hose assembly 301 is not easy to oscillate, and thus the connection between the two ends of the hose assembly 301 is forced to fall off, and the connection becomes more secure and reliable.

Preferably, as shown in fig. 3, 7 and 8, the floor brush body 100 and the base 200 share a bottom plate 12, and the bottom plate 12 is T-shaped and includes a transverse portion of the floor brush body 100 and a vertical portion of the base 200. The air flow channel is located above the transverse portion, the interface portion 15 of the air flow channel extends rearwardly and is located forward of the vertical portion, and the hose assembly 301 is laid along the vertical portion.

As shown in fig. 4, 5 and 8, the two side walls 201 of the base 200 are spaced apart laterally, i.e. in a direction perpendicular to the normal direction of movement of the cleaner brush. The outer sides of the side walls 201 are each provided with a roller 400. The rollers 400 are symmetrically located on each side of the base 200. Each of the rollers 400 is sized such that when the bottom of the main body 100 of the floor brush is disposed in parallel close proximity to the surface to be cleaned, the roller 400 is in contact with the surface to be cleaned. Accordingly, the roller 400 supports the entire cleaner floor brush and allows the cleaner floor brush to move along a surface to be cleaned, so that the movement of the cleaner floor brush is more flexible and controllable.

As shown in fig. 7, 12 and 13, in the present embodiment, there is provided a pipe connection mechanism of a floor brush of a vacuum cleaner, wherein a hose assembly 301 comprises a connection hose 14 having air tightness and a spiral rigid support member 13, the rigid support member 13 is supported on an inner wall of the connection hose 14 to form a first internal thread structure 2, and the rigid support member 13 presses the inner wall of the connection hose 14 to form a first external thread structure 3 on an outer wall of the connection hose 14.

The floor brush main body 100 is used as a first connecting unit of a pipeline connecting mechanism, a connecting port part 15 with a circular cross section is arranged at the tail end of an airflow channel of the floor brush main body, a second external thread structure 4 matched with the first internal thread structure 2 is arranged outside the connecting port part 15, and the first internal thread structure 2 of the hose assembly 301 is in threaded connection with the second external thread structure 4 on the connecting port part 15, so that the hose assembly 301 is in threaded sleeve connection outside the connecting port part 15.

The connecting assembly 302 serves as a second connecting unit of the pipeline connecting mechanism, the connecting assembly 302 is provided with a sleeving part 16 connected with the hose assembly 301, a second internal thread structure 5 matched with the first external thread structure 3 is arranged in the sleeving part 16, and the first external thread structure 3 of the hose assembly 301 is in threaded connection with the second internal thread structure 5 on the sleeving part 16, so that the hose assembly 301 is in threaded sleeving connection in the sleeving part 16.

It should be noted that, the joint between the floor brush main body 100 and the hose assembly 301 is equivalent to the threaded connection between the rigid support 13 and the connecting portion 15, and the connecting hose 14 is pressed by the rigid support 13 and is sleeved outside the threaded connection structure in an interference manner, so that not only is the connection more secure and reliable, but also the air tightness of the joint is enhanced.

In the same way, at the joint of the hose assembly 301 and the connection assembly 302, the connection hose 14 is screwed with the sleeve-joint part 16, and the rigid support 13 extrudes the inner wall of the connection hose 14 in an interference manner, which is equivalent to the connection hose 14 is clamped between the inner wall of the sleeve-joint part 16 and the outer wall of the rigid support 13, so that the firmness and the air tightness of the pipeline connection are further enhanced.

Meanwhile, it should be understood that the thread screwing mode is obviously more convenient and faster in the assembling process compared with the traditional glue connection mode, the direct interference sleeving mode and the like.

Preferably, the connecting hose 14 is blow moulded from plastics material and the rigid support 13 is a metal coil spring, so that the two cooperate to allow the hose assembly 301 to contract and bend along an axis.

Further preferably, the inner wall of the socket part 16 is provided with a first thread rib group 161 and a second thread rib group 162 which are spaced from each other in the radial direction, and the first thread rib group 161 and the second thread rib group 162 form the second internal thread structure 5. Such an interrupted thread structure not only provides for ease of manufacture and material savings, but also facilitates assembly of the hose assembly 301 with the socket 16.

As shown in the figure, the connection assembly 302 includes a first connection pipe 302a sleeved outside the hose assembly 301 and a second connection pipe 302b having a movable connection portion 11 at a front end thereof, the second connection pipe 302b is sleeved outside the hose assembly 301, and the front end of the first connection pipe 302a and the rear end of the second connection pipe 302b are coupled to each other along an up-and-down axis, so that the first connection pipe 302a swings left and right with respect to the second connection pipe 302 b.

It should be understood that the socket 16 is disposed at the front section of the first connection pipe 302a, the rear section of the first connection pipe 302a is a cylindrical connection part 17 provided with external threads, the front end of the extension pipe of the vacuum cleaner is provided with internal threads, and the extension pipe is screwed and fastened with the rear section of the first connection pipe 302 a.

It should be noted that the first connecting tube 302a has the ability to rotate left and right about an axis relative to the front second connecting tube 302 b. The second connection pipe 302b has the ability to rotate up and down with respect to the base 200 about an axis. Both of these movements are necessary to accommodate changes in the angle of inclination of the extension pipe connected to the first connection pipe 302a relative to the floor during normal use. In normal use, a user holds the cleaner body or the extension pipe itself, and applies a force to the cleaner floor brush through the extension pipe, so that the cleaner floor brush is pushed forward, pulled backward, and steered left and right along the floor.

In this process, the coupling portion of the second connection pipe 302b exerts a downward force on the side plate of the base 200, and the connection hose 14 is bent upward to exert a downward force, thereby pressing the bottom plate 12 against the ground.

Preferably, a positioning structure is provided between the coupling part of the front end of the first connection pipe 302a and the base 200 to restrict the first connection pipe 302a from rotating right and left and forward.

As shown in fig. 2, specifically, the positioning structure includes a positioning member 7 protruding forward on the coupling portion of the first connecting pipe 302a and a positioning groove 8 on the inner wall of the cavity of the base 200, and when the first connecting pipe 302a is in the vertical state, the positioning member 7 is inserted into the positioning groove 8 to restrict the first connecting pipe 302a from rotating left and right and forward.

It is further preferable that the positioning groove 8 is a square groove, the positioning member 7 is a square member fitted with the square groove, and the square member is inserted into the square groove to restrict the first connecting pipe 302a in the vertical state from rotating left and right and forward.

Further, as shown in fig. 9 to 11, a restricting structure is provided between the movable connecting portion 11 and the base 200 to restrict the second connecting pipe 302b from rotating backward.

When the dust collecting equipment is idle, the dust collecting equipment can be leaned on the wall in a standing posture through the positioning structure and the limiting structure, and the dust collecting equipment is convenient to store and use.

Preferably, as shown in fig. 11 and 14, the movable connecting portion 11 is a disk structure, the disk structure includes a first disk 111 inside the sidewall 201, a second disk 112 outside the sidewall 201, and an annular body 113 between the first disk 111 and the second disk 112, and the annular body 113 is bridged on the upper edge of the sidewall 201 under the restriction of the first disk 111 and the second disk 112.

As shown in fig. 11, in particular, the limiting structure comprises a longitudinal rib 9 positioned on the outer side of the side wall 201 and an arc-shaped protrusion 10 positioned on the outer periphery of the second tray body 112; the front side of the arc-shaped protrusion 10 can abut against the rear side of the longitudinal rib 9, thereby limiting the backward rotation of the second connection pipe 302 b; the application of force to the articulating portion 11 causes the arcuate projections 10 to ride over the longitudinal ribs 9.

Preferably, a damping sidewall N2 is provided on the outer side of the sidewall 201, and a damping protrusion is provided on the outer surface of the second tray 112, and when the movable connecting portion 11 rotates around the upper edge of the sidewall 201, the damping protrusion presses the damping sidewall N2 to generate friction damping.

In this embodiment, the floor brush body 100 includes a bottom portion 100a and an upper cover 100B, the bottom portion includes a bottom surface D and an air inlet cavity 1, the air inlet cavity 1 is located at the center of the bottom surface and makes the bottom surface form a front flange 21 and a rear flange 22, two ends of the air inlet cavity 1 extend to the bottom surface edge to make two sides of the bottom surface form a recessed side air inlet a, a plurality of recessed front air inlets B are uniformly distributed on the front flange 21, and the air flow enters into the air inlet cavity 1 through the side air inlets a and the front air inlets B.

The side air inlet A and the front air inlet B enable dust-laden air to be sucked into the dust collection equipment more effectively, the side air inlet A and the front air inlet B are both arranged to be of a concave structure, the floor brush main body 100 is prevented from blocking the air inlet due to the fact that the ground is sucked by negative pressure, and therefore wind efficiency is prevented from being affected, and therefore the dust collection of the dust collector floor brush is smooth.

Preferably, the rear flange 22 is attached with an electrostatic strip C, which is disposed at the middle section of the rear flange 22, or the length of the electrostatic strip C exceeds 2/3 of the rear flange 22.

It is also preferable that one bottom roller 500 is provided on each side of the front flange. Thereby, the flexibility of the dust collector floor brush is further increased. The front flange is provided with a mounting hole K, a shaft pin is fixed on the mounting hole K, and the bottom roller 500 penetrates through the shaft pin

As shown in fig. 3, 7 and 8, a brush assembly 60 for cleaning a carpet is provided at the front side of the front flange 21 and can move up and down, a control button 51 is provided at the upper part of the floor brush main body 100, a linkage frame 52 and a link assembly 53 are provided in the floor brush main body 100, the brush assembly 60 is installed at the front side of the linkage frame 52, the control button 51 is connected with the linkage frame 52 through the link assembly 53

The rear side of the linkage frame 52 is provided with a rubber scraper bar 70, the rubber scraper bar 70 is positioned at the outer side of the rear flange 22, and the control button 51 is operated to enable one of the rubber scraper bar 70 and the brush assembly 60 to be protruded from the bottom surface. Thereby realizing the switching of different modes of the floor brush.

Furthermore, the front air inlet B is of a horn mouth structure with a large front part and a small back part. Not only plays a role in guiding, but also improves the wind speed at the outlet and further improves the dust collection effect by reducing the caliber.

Further, the upper cover includes a top portion, a front side portion and a rear side portion, the brush assembly 60 is located inside the front side portion, and the squeegee strip 70 is located inside the rear side portion.

As shown in fig. 7, the airflow passage is formed by a front passage body 41 formed by rising upward from the bottom plate 12 and having an open rear end, and a rear passage body 42 formed behind the front passage body 41. The inner cavity of the front passage body 41, i.e., the intake recess, and the rear passage body 42 are detachably butted against the front passage body 41 to form a lateral passage.

Preferably, the front channel body 41 is integrally formed with the bottom plate 12, and is formed by the first inclined surface 18 at the front side and the second inclined surfaces 19 at the two sides in a surrounding manner, so that a streamline structure is formed in the front channel body, the wind resistance is reduced, and the airflow is smoother.

The rear channel body 42 is positioned to rest on the base plate 12, and the base plate 12 supports the rear channel body 42. The rear end of the rear channel body 42 is a mouthpiece 15, and the mouthpiece 15 is connected to a hose assembly 301. The front channel body 41 and the rear channel body 42 are each received in a cavity between the base plate 12 and the upper cover.

Preferably, a plurality of pairs of snap structure assemblies are disposed at the joint of the front channel body 41 and the rear channel body 42, and each snap structure assembly comprises a snap protrusion 411 located on the front channel body 41 and a snap ring 422 located on the rear channel body 42.

The rear wall of the rear channel body 42 is provided with a longitudinal positioning groove 1, the bottom plate 12 is provided with a positioning convex column 421 matched with the longitudinal positioning groove, and the positioning convex column 421 is inserted into the longitudinal positioning groove 1 to play a positioning and supporting role for the rear channel body 42.

Through the arrangement, the pipeline connection is convenient, the mold structure for manufacturing the floor brush main body 100 is simplified, the mold stripping time is reduced, and the production efficiency is improved.

The pipeline connecting mechanism of the dust collector floor brush and the dust collector floor brush provided by the invention are described in detail, the principle and the implementation mode of the invention are explained by applying specific examples, and the description of the embodiments is only used for helping to understand the invention and the core idea. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims (10)

1. The pipeline connecting mechanism of the dust collector floor brush is characterized by comprising a hose assembly and at least one connecting unit, wherein the hose assembly comprises a connecting hose with air tightness and a spiral rigid supporting piece, the rigid supporting piece supports the inner wall of the connecting hose to form a first internal thread structure, and the rigid supporting piece extrudes the inner wall of the connecting hose to form a first external thread structure on the outer wall of the connecting hose;

the connecting unit is provided with a second external thread structure or a second internal thread structure;

the first internal thread structure of the hose assembly is in threaded connection with the second external thread structure on the connecting unit, or the first external thread structure of the hose assembly is in threaded connection with the second internal thread structure on the connecting unit.

2. The pipe connection mechanism of a floor brush of a vacuum cleaner as claimed in claim 1, wherein the connection unit is a main body of the floor brush, an airflow channel is provided in the main body of the floor brush, a connection part with a circular cross section is provided at the end of the airflow channel, the second external thread structure is provided outside the connection part, and the hose assembly is in threaded sleeve connection with the outside of the connection part.

3. The conduit coupling mechanism according to claim 2, wherein the brush body comprises a bottom plate, the bottom plate comprises a transverse portion and a vertical portion arranged in a T-shape, the airflow channel is located above the transverse portion, the interface portion of the airflow channel extends rearward and is located forward of the vertical portion, and the hose assembly is laid along the vertical portion and abuts against the interface portion.

4. The pipe connection mechanism of a floor brush for a vacuum cleaner as claimed in claim 1, wherein the connection unit is a connection assembly connected to an extension pipe of a main body of the vacuum cleaner, the connection assembly is provided with a socket portion connected to the hose assembly, the socket portion is provided with the second internal thread structure therein, and the hose assembly is threadedly socket-connected to the socket portion.

5. The pipe connection mechanism of the dust collector floor brush as claimed in claim 4, wherein the inner wall of the sleeve portion is provided with a first thread rib group and a second thread rib group which are spaced from each other in a radial direction, and the first thread rib group and the second thread rib group form the second internal thread structure.

6. A pipe connection according to claim 4, wherein said connecting hose is blow moulded from plastics material, said rigid support member is a metal coil spring, and said hose assembly is axially retractable and bendable.

7. The pipe connection structure of a floor brush for a vacuum cleaner as claimed in claim 3, wherein the air flow path is formed by a front path body having an open rear end and formed by being upwardly protruded from the bottom plate and a rear path body detachably butted to a rear side of the front path body, the front path body is defined by a first inclined surface at a front side and second inclined surfaces at both sides, and the connecting port is formed at the rear path body.

8. The conduit coupling mechanism according to claim 7, wherein a plurality of pairs of snap structure members are provided at the joint of the front channel and the rear channel, and the snap structure members comprise a snap protrusion on the front channel and a snap ring on the rear channel.

9. The pipe connection mechanism of a floor brush for a vacuum cleaner as claimed in claim 8, wherein the rear wall of the rear channel body is provided with a longitudinal positioning slot, the bottom plate is provided with a positioning boss matching with the longitudinal positioning slot, and the boss is inserted into the positioning slot to position and support the rear channel body.

10. A vacuum cleaner floor brush, characterized in that it comprises a pipe connection according to any one of claims 1-9.

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