Vacuum cleaner for hair cleaning

Abstract

This invention discloses a vacuum cleaner for hair cleaning, comprising a vacuum cleaner body and a hair collection extension head. The vacuum cleaner body has a first suction channel, in which a first motor is installed. The hair collection extension head is detachably connected to the front end of the vacuum cleaner body. The hair collection extension head includes a housing and a brush disc. A middle seat is fixed inside the housing. The brush disc is located below the middle seat and rotatably connected to the middle seat. A driver is provided inside the housing. A suction port is opened on the brush disc. A second suction channel is provided inside the middle seat. The second suction channel is located outside the rotatable connection part of the middle seat for connecting with the brush disc. The suction port communicates with the second suction channel as an inlet. A third suction channel is provided inside the housing and communicates with the first suction channel. The inlet of the third suction channel is located on the side of the middle seat and communicates with the second suction channel. A brush bundle is provided at the bottom of the brush disc. A brush comb is fixed on the housing.

Description

Technical Field

[0001] This invention relates to a vacuum cleaner, and more particularly to a vacuum cleaner for hair cleaning. Background Technology

[0002] A vacuum cleaner is a cleaning appliance used to clean dust from floors, carpets, walls, fixtures, clothing, and various crevices. Based on their shape, vacuum cleaners can be classified into upright vacuum cleaners, canister vacuum cleaners, and handheld portable vacuum cleaners.

[0003] The general structure of a vacuum cleaner consists of a vacuum cleaner motor that generates suction power from an input power source, a nozzle that forms the airflow system, a filter bag, and a dust collection section that collects the sucked-in material.

[0004] As people's living standards improve, more and more people are fond of keeping pets, but pet hair is difficult to clean after it falls on sofas and bed sheets. There are now solutions that use rotating brushes attached to vacuum cleaners to remove pet hair.

[0005] For example, patent CN216417032U discloses a vacuum cleaner including a main unit, a head extension accessory, and a filter assembly. The main unit has a first ventilation duct inside, and the head extension accessory is a brush head assembly. The brush head assembly includes a brush head shell, with a brush head at one end of the brush head shell. The brush head shell has a second ventilation duct inside, and a second air inlet is located on the brush head, serving as the air inlet for the second ventilation duct. One side of the shell is detachably connected to the main unit head. The second ventilation duct is connected to the first ventilation duct. The filter assembly is located on the second ventilation duct. The brush head is driven to rotate by a rotating device installed inside the brush head shell. The main unit head has a power supply interface, and the rotating device is electrically connected to the power supply interface.

[0006] Problems with existing vacuum cleaners: 1. The second air inlet in the aforementioned patent is located at the center of the brush head. The second air inlet is the air inlet of the second ventilation duct. Since the brush head needs to be rotated and connected to the brush head shell, the second ventilation duct is located at the center of the rotating connection part of the brush head. In order to connect the second ventilation duct with the first ventilation duct in the main unit, the second ventilation duct needs to be lengthened, which makes the brush head shell longer, resulting in a longer overall structure that is not compact and complex; 2. The bristles on the brush head can brush away hair that has fallen on sofas and sheets, but the hair will get tangled on the bristles and become more and more tightly wrapped during the brushing process, making it difficult to remove and unable to be sucked into the vacuum cleaner. It is necessary to use other auxiliary tools such as scissors and blades to clean the hair, which is troublesome and easily contaminates the hands. Summary of the Invention

[0007] Based on the above-mentioned shortcomings such as the second air inlet being located at the center of the brush head, the rotating connection part of the brush head being outside the second air inlet, the need to lengthen the second ventilation duct, thereby lengthening the brush head shell, and the hair being wrapped around the bristles and inconvenient to remove, the present invention provides a vacuum cleaner for hair cleaning.

[0008] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: a vacuum cleaner for hair cleaning, comprising a vacuum cleaner body and a hair collection extension head, wherein the vacuum cleaner body is provided with a first suction channel, and a first motor is installed in the first suction channel to provide negative pressure suction. The hair collection extension head is detachably connected to the front end of the vacuum cleaner body. The hair collection extension head is characterized in that it includes a shell with an inner cavity and a brush disc, wherein a middle seat is fixed inside the shell, the brush disc is located below the middle seat and rotatably connected to the middle seat, and a mechanism for driving the brush disc is provided inside the shell. The rotating drive has a suction port on the brush disc. A second suction channel is provided in the middle seat. The second suction channel is located outside the rotating connection part of the middle seat that connects to the brush disc. The suction port communicates with the second suction channel as an inlet. A third suction channel is provided in the outer shell and communicates with the first suction channel. The inlet of the third suction channel is located on the side of the middle seat and communicates with the second suction channel. The bottom of the brush disc has a brush bundle for scraping hair. A brush comb is fixed on the outer shell for scraping the hair off the brush bundle and guiding it to the suction port.

[0009] A further preferred embodiment of the present invention is as follows: the second dust suction channel is an annular channel surrounding the outside of the rotating connection part, the bottom of the middle seat is provided with an annular channel opening, the brush plate is blocked below the channel opening, the suction port is eccentrically located on the brush plate, and the suction port is connected to the second dust suction channel only when it is rotated above the brush comb.

[0010] A further preferred embodiment of the present invention is as follows: the brush bundle is disposed on the outer ring of the brush disk to form an annular brush portion, the suction port is eccentrically disposed in the middle of the brush disk where there is no brush bundle, one end of the brush comb is fixed to the outside of the brush portion, and the brush comb passes through the outer and inner rings of the brush portion and extends inward to the suction port.

[0011] A further preferred embodiment of the present invention is as follows: the brush comb includes a toothed section and a flat section. The flat section has a smooth surface. The toothed section traverses the outer and inner rings of the brush portion. The width of the brush portion falls within the length range of the toothed section, allowing the brush bundle to contact the toothed section. The flat section is connected to the end of the toothed section located on the inner side of the brush portion. When the suction port is rotated to the brush comb position, the flat section is located between the suction port and the toothed section for transition, guiding the hair combed by the toothed section to the suction port.

[0012] A further preferred embodiment of the present invention is as follows: the bottom of the outer shell has an opening, and a fixing cover plate fixed to the outer shell is provided in the opening. The fixing cover plate is an annular cover plate, and the brush disk is located inside the inner ring of the fixing cover plate. The inner wall of the inner ring of the fixing cover plate is provided with an inner ring edge. The inner diameter of the inner ring edge is smaller than the outer diameter of the brush disk and is fitted to the bottom of the brush disk. The brush comb is fixed on the fixing cover plate and is inclined.

[0013] A further preferred embodiment of the present invention is as follows: the bottom of the intermediate seat is provided with an inlet groove that communicates with the second dust collection channel. The inlet groove is connected to the outside of the second dust collection channel. The connection between the inlet groove and the second dust collection channel is a flared opening. The inlet groove is located above the brush comb and opposite to the brush comb. When the suction port is rotated to the brush comb, the suction port is located below the opening of the inlet groove. The inlet groove serves as a dust inlet channel to suction dust into the second dust collection channel.

[0014] A further preferred embodiment of the present invention is as follows: a mounting plate is fixed to the side of the intermediate seat, the driver includes a second motor fixed to the mounting plate, an internal gear ring is fixed on the brush disk, a gear is connected to the output shaft of the second motor, the gear meshes with the internal gear ring and drives the internal gear ring to rotate.

[0015] A further preferred embodiment of the present invention is as follows: the vacuum cleaner body is provided with a power supply, the front end of the vacuum cleaner body is provided with a power supply interface, the power supply and the power supply interface are electrically connected, the outer shell is provided with a power plug, and when the hair collection extension head is detachably connected to the vacuum cleaner body, the power plug is connected to the power supply interface, so that the hair collection extension head and the power supply interface are electrically connected.

[0016] A further preferred embodiment of the present invention is as follows: One side of the outer casing has an extension tube extending outwards, and the end of the extension tube has a suction interface. The opening of the suction interface serves as the outlet of the third dust collection channel. The suction interface has a press-type connecting buckle, and a return spring is provided between the connecting buckle and the suction interface for resetting. The connecting buckle has a locking part. The front end of the vacuum cleaner body has an extension tube extending outwards, and the end of the extension tube has a mating interface that connects with the suction interface. The opening of the mating interface serves as the first dust collection channel. The inlet of the vacuum cleaner has a snap-fit ​​groove inside the interface. When the suction interface is inserted into the interface, the snap-fit ​​part is engaged in the snap-fit ​​groove. The vacuum cleaner body has a dust collection chamber located on the first suction channel. The first suction channel has a filter assembly. The dust collection chamber is located between the inlet of the first suction channel and the filter assembly. The dust collection chamber has an opening that communicates with the inlet of the first suction channel. A cover plate is connected to the opening. When the first motor is working, the cover plate opens to expose the opening. When the first motor stops, the cover plate closes to block the opening.

[0017] A further preferred embodiment of the present invention is as follows: the intermediate seat is detachably and fixedly connected to the outer shell, the rotating connection part includes a shaft hole located at the center of the intermediate seat, a rotating shaft is inserted into the shaft hole, bearing grooves are provided at both the upper and lower ends of the shaft hole, bearings are installed in the bearing grooves, the rotating shaft passes through the center of the upper and lower bearings, a limiting part is provided at the upper end of the rotating shaft, the limiting part presses against the inner ring of the upper bearing, the lower end of the rotating shaft passes through the brush disc and is threadedly connected to a nut, the nut presses the brush disc tightly against the inner ring of the lower bearing and fixes it to the rotating shaft, and the brush disc rotates around the axis of the rotating shaft.

[0018] Compared with the prior art, the advantages of the present invention are that the brush disc is rotatably connected to the intermediate seat, the intermediate seat is provided with a second dust suction channel, the second dust suction channel is located outside the rotatable connection part of the intermediate seat for connecting with the brush disc, and the outer shell is provided with a third dust suction channel communicating with the first dust suction channel. The inlet of the third dust suction channel is located on the side of the intermediate seat and communicates with the second dust suction channel. By setting the rotatable connection part in the center of the intermediate seat and the second dust suction channel on the outside of the rotatable connection part, the third dust suction channel can be directly connected to the side of the second dust suction channel without lengthening the second dust suction channel, thereby making the hair collection extension head flatter and the structure more compact.

[0019] As the brush disc rotates and brushes away hair from sheets and sofas, the brush comb scrapes the hair off the brush bundles and guides it to the suction port, which then draws the hair into the collection extension head for easy cleaning of the hair on the brush bundles. Attached Figure Description

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be construed as limiting the scope of the invention. Furthermore, unless specifically indicated, the drawings are only schematic representations of the composition or structure of the described objects and may contain exaggerated depictions, and the drawings are not necessarily drawn to scale.

[0021] Figure 1 Diagram of the overall structure of a vacuum cleaner Figure 1 ;

[0022] Figure 2 Diagram of the overall structure of a vacuum cleaner Figure 2 ;

[0023] Figure 3 Analytical view of the vacuum cleaner body and hair collection extension head;

[0024] Figure 4 This is a cross-sectional view of the vacuum cleaner.

[0025] Figure 5 Schematic diagram of hair collection extension head structure Figure 1 ;

[0026] Figure 6 Schematic diagram of hair collection extension head structure Figure 2 ;

[0027] Figure 7 A partial cross-section of the head for hair collection;

[0028] Figure 8 A partial cross-sectional view of the hair collection extension head;

[0029] Figure 9 A schematic diagram showing the disassembly of the connecting buckle and the hair collection extension head;

[0030] Figure 10 A schematic diagram of the internal structure of the hair collection extension head;

[0031] Figure 11 This is a schematic diagram showing the connection between the intermediate seat and the second motor;

[0032] Figure 12 This is a schematic diagram of the intermediate seat structure;

[0033] Figure 13 This is a schematic diagram of the main structure of a vacuum cleaner.

[0034] In the diagram: 1. Vacuum cleaner body; 2. Handle; 3. Control switch; 4. Extension tube 2; 5. Extension tube 1; 6. Hair collection extension head; 7. Connecting interface; 8. Power interface; 9. Connecting buckle; 10. Suction interface; 11. Power plug; 12. First suction channel; 13. Cover plate; 14. Clip slot; 15. Clip part; 16. Hook part; 17. Outer shell; 18. Fixed cover plate; 19. Brush disc; 20. Brush bundle; 21. Brush comb; 22. Suction port; 23. Throat tube; 24. Intermediate connecting tube; 25. Third suction channel; 6. Intermediate seat; 27. Connecting port; 28. Rotating shaft; 29. ​​Limiting part; 30. Upper bearing; 31. Bearing groove; 32. Shaft hole; 33. Second dust suction channel; 34. Internal gear ring; 35. Inner ring edge; 36. Annular convex edge; 37. Support part; 38. Washer; 39. Nut; 40. Lower bearing; 41. Brush part; 42. Trumpet mouth; 43. Inlet groove; 44. Flat plate section; 45. Comb tooth section; 46. Second motor; 47. Gear; 48. Mounting plate; 49. Outer tube; 50. Intermediate connecting edge; 51. Inner tube; 52. Dust collection chamber. Detailed Implementation

[0035] Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely descriptive and exemplary and should not be construed as limiting the scope of the invention.

[0036] It should be noted that similar labels in the following figures indicate similar items; therefore, once an item is defined in one figure, it may not be further defined and explained in subsequent figures.

[0037] Figures 1-13 As shown, a vacuum cleaner for cleaning hair includes a vacuum cleaner body 1 and a hair collection extension head 6, which is detachably connected to the front end of the vacuum cleaner body 1.

[0038] Figure 4 As shown, the vacuum cleaner body 1 has the same structure as existing vacuum cleaners. Specifically, the vacuum cleaner body 1 has a first suction channel 12, and a first motor is installed in the first suction channel 12. The output end of the first motor is connected to a fan blade. When the first motor drives the fan blade to rotate, it generates negative pressure suction in the first suction channel 12. The vacuum cleaner body 1 has an inlet for the first suction channel 12. The fan blade draws outside air into the first suction channel 12 through the inlet and discharges it out of the vacuum cleaner body 1. The first motor is not shown in the attached drawings.

[0039] The vacuum cleaner body 1 has a dust collection chamber 52 located on the first suction channel 12. A filter assembly is installed within the first suction channel 12. The dust collection chamber 52 is situated between the inlet of the first suction channel 12 and the filter assembly. The dust collection chamber 52 has an opening that communicates with the inlet of the first suction channel 12, and a cover plate 13 is connected to the opening. The filter assembly can be a filter screen.

[0040] Preferably, the cover plate 13 includes a fixing part and a plate body, and an elastic connecting part is provided between the fixing part and the plate body. The elastic connecting part connects the fixing part and the plate body, the fixing part is fixed inside the cavity, and the plate body seals the cavity.

[0041] When the first motor is working, a negative pressure suction is generated in the first suction channel 12, which draws in external air from the inlet of the first suction channel 12. Under the impact of the airflow, the cover plate 13 is opened to expose the cavity, and the air is discharged to the outside of the vacuum cleaner body 1 after passing through the dust collection chamber 52 and the filter assembly. The dust drawn in is filtered by the filter assembly and remains in the dust collection chamber 52. When the first motor stops, the elastic force of the elastic connection drives the plate to elastically reset, so that the plate re-covers the cavity, keeping the dust in the dust collection chamber 52 and preventing the collected dust from falling out to the outside through the inlet of the first suction channel 12.

[0042] The vacuum cleaner body 1 is also equipped with a power supply for power supply. The power supply can be a battery or a power cord on the vacuum cleaner body 1 for connecting to the household power grid.

[0043] The vacuum cleaner body 1 is also equipped with a handle 2 and a control switch 3.

[0044] Figures 5-7As shown, the hair collection extension head 6 includes a housing 17 with an inner cavity and a brush disc 19. The bottom of the housing 17 has an opening, and a middle seat 26 is fixed inside the housing 17. The brush disc 19 is located below the middle seat 26 and is rotatably connected to the middle seat 26. The housing 17 is provided with a driver for driving the brush disc 19 to rotate. The driver can drive the brush disc 19 to rotate. A suction port 22 is provided on the brush disc 19. A second dust suction channel 33 is provided inside the middle seat 26. The second dust suction channel 33 is located outside the rotatable connection part of the middle seat 26 for connecting with the brush disc 19. The suction port 22 communicates with the second dust suction channel 33 as an inlet. A third dust suction channel 25 is provided inside the housing 17 and communicates with the first dust suction channel 12. The inlet of the third dust suction channel 25 is located on the side of the middle seat 26 and communicates with the second dust suction channel 33.

[0045] Figure 6 As shown, the bottom of the brush plate 19 is provided with a brush bundle 20 for scraping hair, and the outer shell 17 is fixed with a brush comb 21 for scraping the hair off the brush bundle 20 and guiding it to the suction port 22.

[0046] When the first motor starts, outside air enters the second suction channel 33 from the suction port 22, then enters the third suction channel 25 from the second suction channel 33, and then flows into the first suction channel 12 from the third suction channel 25, so that the sucked-in dust enters the dust collection chamber 52 of the vacuum cleaner body 1.

[0047] Furthermore, by placing the rotating connection part connected to the brush plate 19 at the center of the intermediate seat 26 and the second dust suction channel 33 on the outside of the rotating connection part, the third dust suction channel 25 can be directly connected to the side of the second dust suction channel 33 without lengthening the second dust suction channel 33, thereby making the hair collection extension head 6 flatter and the structure more compact.

[0048] Figure 7 , Figure 8 As shown, the second suction channel 33 is an annular channel surrounding the outside of the rotating connection part. The bottom of the intermediate seat 26 is provided with an annular channel opening. The brush disk 19 is blocked below the channel opening. The suction port 22 is located on the brush disk 19, offset from the rotation center of the brush disk 19. When the driver drives the brush disk 19 to rotate, the suction port 22 rotates around the rotation center with the brush disk 19. During this process, the suction port 22 only connects with the second suction channel 33 when it rotates above the brush comb 21.

[0049] The suction port 22 only connects to the second suction channel 33 when it rotates above the brush comb 21. This is equivalent to the brush disc 19 blocking the second suction channel 33 when it rotates. When the suction port 22 rotates above the brush comb 21, it connects to the second suction channel 33 and then opens. This opening and closing creates a pulse negative pressure suction force in the suction port 22. This suction force is greater than the negative pressure of the normally open suction port 22, which helps to improve the suction effect.

[0050] The intermediate seat 26 can be integrally formed on the outer shell 17, or the intermediate seat 26 can be a component independent of the outer shell 17. Preferably, the intermediate seat 26 is detachably fixedly connected to the outer shell 17. Specifically, the intermediate seat 26 is fixedly connected to the outer shell 17 by screws.

[0051] The rotating connection includes a shaft hole 32 located at the center of the intermediate seat 26. A rotating shaft 28 is inserted into the shaft hole 32. Bearing grooves 31 are provided at both the upper and lower ends of the shaft hole 32, and bearings are installed in the bearing grooves 31. The outer rings of the bearings are connected to the bearing grooves 31. The rotating shaft 28 passes through the center of the upper and lower bearings. A limiting part 29 is provided at the upper end of the rotating shaft 28, which presses against the inner ring of the upper bearing 30. The lower end of the rotating shaft 28 passes through the brush disc 19 and is threadedly connected to a screw. When the nut 39 is tightened, the nut 39 and the limiting part 29 apply pressure to the middle, so that the limiting part 29 presses tightly against the inner ring of the upper bearing 30 and presses the upper bearing 30 tightly into the upper bearing groove 31. The nut 39 presses the brush disk 19 tightly against the inner ring of the lower bearing 40, so that the brush disk 19 and the rotating shaft 28 are fixed as a whole. The brush disk 19 presses the lower bearing 40 tightly into the lower bearing groove 31. The brush disk 19 rotates around the axis of the rotating shaft 28.

[0052] The upper bearing 30 and the lower bearing 40 make the rotation of the shaft 28 more stable and smoother, and reduce the friction when the shaft 28 rotates.

[0053] Preferably, the top center of the brush disk 19 is provided with a raised support part 37. When the nut 39 is tightened, the nut 39 presses the brush disk 19 upward, so that the support part 37 abuts against the inner ring of the lower bearing 40.

[0054] A washer 38 is provided between the nut 39 and the brush disc 19. The washer 38 is fitted on the rotating shaft 28. The washer 38 allows the nut 39 to be tightened more tightly and makes the brush disc 19 more securely connected.

[0055] Figure 12As shown, specifically, the intermediate seat 26 includes an outer tube 49 and an inner tube 51 disposed in the middle of the outer tube 49. The outer tube 49 and the inner tube 51 are connected by an intermediate connecting edge 50, and a reinforcing rib is provided between the outer tube 49 and the inner tube 51 to increase the connection strength. The outer tube 49 and the inner tube 51 form an annular channel with an opening facing downwards to serve as the aforementioned second dust suction channel 33. The center of the inner tube 51 serves as a shaft hole 32. The second dust suction channel 33 is arranged around the shaft hole 32. A connecting port 27 is provided on the side wall of the intermediate seat 26 to communicate with the space between the outer tube 49 and the inner tube 51. The connecting port 27 is used to connect the second dust suction channel 33 and the third dust suction channel 25.

[0056] The outer tube 49, the inner tube 51, and the middle connecting edge 50 are integrally formed.

[0057] In addition, the top of the brush disk 19 is also fixed with an annular protrusion 36. When the brush disk 19 is connected to the rotating shaft 28, the annular protrusion 36 is sleeved on the outside of the inner tube 51. Preferably, the inner diameter of the annular protrusion 36 is equal to or slightly larger than the outer diameter of the inner tube 51. The annular protrusion 36 sleeved on the outside of the inner tube 51 can effectively limit the swaying of the brush disk 19 when it rotates, making the rotation of the brush disk 19 more stable.

[0058] The bottom of the outer tube 49 is attached to the upper surface of the brush disk 19, which can also effectively limit the swaying of the brush disk 19 when it rotates.

[0059] Figure 10 , Figure 11 As shown, the driver also includes a second motor 46, a mounting plate 48 is fixed to the side of the intermediate seat 26, the second motor 46 is fixedly connected to the mounting plate 48, an internal gear ring 34 is fixed on the brush disk 19, the axis of the internal gear ring 34 coincides with the axis of the rotating shaft 28, the axis of the output shaft of the second motor 46 is parallel to the axis of the rotating shaft 28, a gear 47 is connected to the output shaft of the second motor 46, the gear 47 meshes with the internal gear ring 34, when the second motor 46 drives the gear 47 to rotate, the gear 47 drives the internal gear ring 34 to drive the brush disk 19 to rotate around the axis of the rotating shaft 28.

[0060] The second motor 46 is externally suspended on the side of the intermediate seat 26. The gear 47 and the internal gear ring 34 work together to reduce the speed of the second motor 46. Moreover, the fact that the second motor 46 is located on the side of the intermediate seat 26 does not increase the length of the hair collection extension head 6, making the hair collection extension head 6 flatter and more compact overall.

[0061] The vacuum cleaner body 1 is used to provide negative pressure suction for the hair collection extension head 6, as well as power supply and control.

[0062] Figure 5As shown, an extension tube 5 extends out from one side of the outer casing 17. The end of the extension tube 5 is provided with a suction port 10. The opening of the suction port 10 serves as the outlet of the third dust suction channel 25. Specifically, a throat tube 23 is fixed inside the extension tube 5. One end of the throat tube 23 has a suction port 10. The suction port 10 extends out of the opening of the extension tube 5 for connection with the vacuum cleaner body 1. An intermediate connecting tube 24 is provided between the throat tube 23 and the intermediate seat 26. One end of the intermediate connecting tube 24 is connected to the aforementioned communication port 27, and the other end of the intermediate connecting tube 24 is connected to the end of the throat tube 23 located inside the outer casing 17. The intermediate connecting tube 24 and the throat tube 23 are connected and combined to form the aforementioned third dust suction channel 25.

[0063] Figure 13 As shown, the front end of the vacuum cleaner body 1 is provided with an extension tube 2 4 extending outwards. The end of the extension tube 2 4 is provided with a docking port 7 that connects with the suction port 10. The opening of the docking port 7 serves as the inlet of the first suction channel 12. The suction port 10 and the docking port 7 are connected to connect the first suction channel 12 with the third suction channel 25, thereby enabling the vacuum cleaner body 1 to provide negative pressure suction to the hair collection extension head 6.

[0064] Figure 9 As shown, the suction interface 10 is provided with a press-type connecting buckle 9. A return spring is provided between the connecting buckle 9 and the suction interface 10 for resetting. The connecting buckle 9 is provided with a latching part 15. Specifically, one end of the connecting buckle 9 is hinged to the side wall of the suction interface 10, and the other end of the connecting buckle 9 is provided with an elastic hook part 16. The hook part 16 hooks onto the inner edge of the opening of the extension tube 5. A return spring is provided between the connecting buckle 9 and the suction interface 10. The elasticity of the return spring drives the end of the connecting buckle 9 with the hook part 16 to rotate outward around the hinge point, so that the hook part 16 is pressed tightly against the opening of the extension tube 5. On the inner edge, there is a space between the hook part 16 and the outer wall of the throat tube 23 for the hook part 16 to move inward after being pressed. The connecting buckle 9 is provided with a snap-fit ​​part 15, and the interface 7 is provided with a snap-fit ​​groove 14. When the suction interface 10 is inserted into the interface 7, the snap-fit ​​part 15 is snapped into the snap-fit ​​groove 14, so that the hair collection extension head 6 is detachably connected to the vacuum cleaner body 1. When it is necessary to remove the hair collection extension head 6, by pressing the connecting buckle 9, the snap-fit ​​part 15 moves downward around the hinge point and disengages from the snap-fit ​​groove 14. At this time, the hair collection extension head 6 can be detached from the vacuum cleaner body 1.

[0065] In addition, the front end of the vacuum cleaner body 1 is provided with a power supply interface 8, which is located at the end of the extension tube 4. The power supply on the vacuum cleaner body 1 is electrically connected to the power supply interface 8. The outer shell 17 is provided with a power plug 11, which is located at the end of the extension tube 5. When the suction interface 10 is inserted into the interface 7, the power plug 11 is inserted into the power supply interface 8, so that the power supply interface 8 is electrically connected to the hair collection extension head 6, thereby enabling the vacuum cleaner body 1 to supply power and provide control to the hair collection extension head 6. The second motor 46 is electrically connected to the power plug 11.

[0066] The bottom of the brush disc 19 is provided with a bristle bundle 20 for scraping hair. The outer shell 17 is fixed with a bristle comb 21 for scraping the hair off the bristle bundle 20 and guiding it to the suction port 22. When the brush disc 19 rotates and brushes away hair from the sheets and sofa, the bristle comb 21 continuously combs the bristle bundle 20 on the brush disc 19 during the rotation of the brush disc 19. The bristle comb 21 can scrape the hair off the bristle bundle 20 and guide it to the suction port 22, so that the suction port 22 sucks the hair into the hair collection extension head 6, which is convenient for cleaning the hair on the bristle bundle 20.

[0067] The brush bundle 20 is located on the outer ring of the brush disk 19 to form an annular brush portion 41. The suction port 22 is eccentrically located in the middle of the brush disk 19 where there is no brush bundle 20. One end of the brush comb 21 is fixed to the outside of the brush portion 41. The brush comb 21 passes through the outer and inner rings of the brush portion 41 and extends inward to the suction port 22.

[0068] The brush comb 21 spans across the brush section 41, allowing it to comb down the hair tangled on the brush section 41 and transition to the suction port 22. The brush disc 19 has only the outer ring with brush bundles 20, and the suction port 22 is located in the middle of the brush disc 19 where there are no brush bundles 20, so that the suction port 22 can better suck the hair combed down by the brush comb 21 into the hair collection extension head 6.

[0069] Figure 8 As shown, the brush comb 21 includes a toothed section 45 and a flat section 44. The flat section 44 has a smooth surface. The toothed section 45 traverses the outer and inner rings of the brush portion 41 and extends toward the center of the brush disc 19. The width of the brush portion 41 falls within the length range of the toothed section 45, so that the brush bundle 20 contacts the toothed section. That is, the width of the brush portion 41 is equal to or less than the length of the toothed section 45, and the brush portion 41 can be completely combed by the toothed section.

[0070] Preferably, the starting end of the flat plate segment 44 is located at the inner circle of the brush portion 41.

[0071] The flat section 44 is connected to the end of the comb section 45 located inside the brush section 41. When the suction port 22 is rotated to the position of the brush comb 21, the flat section 44 is located between the suction port 22 and the comb section 45 for transition, guiding the hair combed by the comb section 45 to the suction port 22. One part of the brush comb 21 is configured as the comb section 45 with comb teeth, and the other part is a flat section 44. Since there is no brush bundle 20 on the inner side, the inner side of the brush comb 21 does not need to be configured with comb teeth, and the smooth flat surface is conducive to the smooth entry of hair into the suction port 22, which facilitates the guidance of hair.

[0072] Figure 7 As shown, the bottom of the outer casing 17 has an opening, and a fixing cover plate 18 fixed to the outer casing 17 is provided inside the opening. The fixing cover plate 18 is an annular cover plate, and the brush disk 19 is located inside the inner ring of the fixing cover plate 18. The inner wall of the inner ring of the fixing cover plate 18 is provided with an inner ring edge 35. The inner diameter of the inner ring edge 35 is smaller than the outer diameter of the brush disk 19. The inner ring edge 35 is fitted and positioned below the brush disk 19, and the inner ring edge 35 can effectively limit the swinging of the brush disk 19 when it rotates. The fixing cover plate 18 is fixedly connected to the outer casing 17 by screws.

[0073] The brush comb 21 is fixed to the fixed cover plate 18 and is inclined. The direction of the brush comb 21 is at an angle to the radial direction of the brush disc 19, so that the brush comb 21 can guide the hair to the suction port 22 when combing the hair on the brush bundle 20. One end of the brush comb 21 is fixedly connected to the fixed cover plate 18 by screws.

[0074] Figure 8 As shown, the bottom of the intermediate seat 26 is provided with an inlet groove 43 that communicates with the second dust suction channel 33. The inlet groove 43 is located outside the second dust suction channel 33. The connection between the inlet groove 43 and the second dust suction channel 33 is a flared opening 42. The brush disc 19 is sealed on the lower opening of the inlet groove 43 to form a dust inlet channel. The inlet groove 43 is located above the brush comb 21 and is arranged vertically opposite to the brush comb 21. When the suction port 22 is rotated to the brush comb 21, the suction port 22 is located below the opening of the inlet groove 43. The inlet groove 43 serves as a dust inlet channel to suction dust into the second dust suction channel 33.

[0075] The flare 42 increases the suction power into the second suction channel 33, allowing hair to be better drawn into the second suction channel 33.

[0076] The above describes the vacuum cleaner for hair cleaning provided by the present invention. Specific examples have been used to illustrate the principles and implementation methods of the invention. The descriptions of the embodiments are merely for the purpose of helping to understand the invention and its core ideas. It should be noted that those skilled in the art can make various improvements and modifications to the invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A vacuum cleaner for hair cleaning, comprising a vacuum cleaner body and a hair collection extension head, wherein the vacuum cleaner body has a first suction channel, a first motor is installed in the first suction channel to provide negative pressure suction, and the hair collection extension head is detachably connected to the front end of the vacuum cleaner body, characterized in that, The hair collection extension head includes a housing with an inner cavity and a brush disc. A central base is fixed inside the housing, and the brush disc is located below and rotatably connected to the central base. A driver for rotating the brush disc is located inside the housing. A suction port is provided on the brush disc. A second suction channel is provided inside the central base, located outside the rotatable connection part of the central base that connects to the brush disc. The suction port communicates with the second suction channel as an inlet. A third suction channel is provided inside the housing, communicating with a first suction channel. The inlet of the third suction channel is located on the side of the central base and communicates with the second suction channel. A bristle bundle for scraping hair is provided at the bottom of the brush disc. A brush comb is fixed on the housing to scrape the hair off the bristle bundle and guide it to the suction port. The second suction channel is an annular channel surrounding the outside of the rotating connection part. The bottom of the middle seat has an annular channel opening, and the brush disc is sealed below the channel opening. The suction port is eccentrically positioned on the brush disc. The suction port only communicates with the second suction channel when it is rotated above the brush comb. The bottom of the intermediate seat is provided with an inlet groove that communicates with the second dust collection channel. The inlet groove is connected to the outside of the second dust collection channel. The connection between the inlet groove and the second dust collection channel is a flared opening. The inlet groove is located above the brush comb and opposite to the brush comb. When the suction port is rotated to the brush comb, the suction port is located below the opening of the inlet groove. The inlet groove serves as a dust inlet channel to suck dust into the second dust collection channel.

2. The vacuum cleaner for hair cleaning according to claim 1, characterized in that, The brush bundle is arranged on the outer ring of the brush disk to form a ring-shaped brush part. The suction port is eccentrically located in the middle of the brush disk where there is no brush bundle. One end of the brush comb is fixed to the outside of the brush part. The brush comb passes through the outer and inner rings of the brush part and extends inward to the suction port.

3. The vacuum cleaner for hair cleaning according to claim 2, characterized in that, The brush comb includes a toothed section and a flat section. The flat section has a smooth surface. The toothed section runs through the outer and inner rings of the brush portion. The width of the brush portion falls within the length range of the toothed section, allowing the brush bundle to contact the toothed section. The flat section is connected to the end of the toothed section located inside the brush portion. When the suction port is rotated to the brush comb position, the flat section is located between the suction port and the toothed section for transition, guiding the hair combed by the toothed section to the suction port.

4. The vacuum cleaner for hair cleaning according to claim 1 or 2, characterized in that, The bottom of the outer shell has an opening, and a fixing cover plate fixed to the outer shell is provided in the opening. The fixing cover plate is an annular cover plate. The brush disk is located inside the inner ring of the fixing cover plate. The inner wall of the inner ring of the fixing cover plate is provided with an inner ring edge. The inner diameter of the inner ring edge is smaller than the outer diameter of the brush disk and is fitted to the bottom of the brush disk. The brush comb is fixed on the fixing cover plate and is inclined.

5. The vacuum cleaner for hair cleaning according to claim 1, characterized in that, A mounting plate is fixed to the side of the intermediate seat. The driver includes a second motor fixed to the mounting plate. An internal gear ring is fixed on the brush disk. A gear is connected to the output shaft of the second motor. The gear meshes with the internal gear ring and drives the internal gear ring to rotate.

6. The vacuum cleaner for hair cleaning according to claim 1, characterized in that, The vacuum cleaner body is equipped with a power supply, and the front end of the vacuum cleaner body is equipped with a power supply interface. The power supply and the power supply interface are electrically connected. The outer shell is equipped with a power plug. When the hair collection extension head is detachably connected to the vacuum cleaner body, the power plug is connected to the power supply interface, so that the hair collection extension head and the power supply interface are electrically connected.

7. The vacuum cleaner for hair cleaning according to claim 1 or 6, characterized in that, One side of the outer casing has an extension tube extending outwards. The end of the extension tube has a suction interface, the opening of which serves as the outlet of the third dust collection channel. The suction interface has a press-type connecting buckle, and a return spring is provided between the connecting buckle and the suction interface for reset. The connecting buckle has a locking part. The front end of the vacuum cleaner body has an extension tube extending outwards. The end of the extension tube has a docking interface that connects with the suction interface. The opening of the docking interface serves as the inlet of the first dust collection channel. The docking interface has a locking groove. When the suction interface is inserted into the docking interface, the locking part engages in the locking groove. The vacuum cleaner body has a dust collection chamber located on the first dust collection channel. The first dust collection channel has a filter assembly. The dust collection chamber is located between the inlet of the first dust collection channel and the filter assembly. The dust collection chamber has an opening that communicates with the inlet of the first dust collection channel. A cover plate is connected to the opening. When the first motor is working, the cover plate opens to expose the opening. When the first motor stops, the cover plate closes to block the opening.

8. The vacuum cleaner for hair cleaning according to claim 1, characterized in that, The intermediate seat is detachably and fixedly connected to the outer shell. The rotating connection part includes a shaft hole in the center of the intermediate seat, a rotating shaft is inserted into the shaft hole, and bearing grooves are provided at both the upper and lower ends of the shaft hole. Bearings are installed in the bearing grooves. The rotating shaft passes through the center of the upper and lower bearings. A limiting part is provided at the upper end of the rotating shaft. The limiting part presses against the inner ring of the upper bearing. The lower end of the rotating shaft passes through the brush disc and is threaded with a nut. The nut presses the brush disc tightly against the inner ring of the lower bearing and fixes it to the rotating shaft. The brush disc rotates around the axis of the rotating shaft.

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