A universal communication device, cleaning head and vacuum cleaner

Abstract

The application discloses a universal communication device, a cleaning head and a dust collector. The universal communication device comprises a flexible pipe and two hard pipes. The two hard pipes are spaced apart. The flexible pipe is located between the two hard pipes. The axial length of the flexible pipe is less than the pipe diameter of the hard pipes. The two ends of the flexible pipe are respectively sealed and connected to one end of the two hard pipes which are close to each other. The two hard pipes have a movable allowance between them. The two hard pipes are provided with magnetic bodies at the end which is close to each other. The magnetic poles of the magnetic bodies on the two hard pipes which are close to each other are the same. The repulsion between the magnetic bodies on the two hard pipes is used to drive the two hard pipes to move away from each other. In this way, the two hard pipes can move away from each other under the action of the same magnetic bodies. The flexible pipe and the magnetic bodies cooperate to have certain rigidity so that the whole universal communication device has supporting characteristics. Meanwhile, the two hard pipes have a certain flexibility so that the two hard pipes have a universal movable allowance.

Description

Technical Field

[0001] This invention belongs to the field of vacuum cleaning equipment, and particularly relates to a universal connector, a cleaning head, and a vacuum cleaner. Background Technology

[0002] When bed cleaning robots, mite removers, and other similar devices are working, their bottom cleaning head needs to make close contact with the object being cleaned (such as the floor or mattress). Currently, the connection between the cleaning head's suction housing and the negative pressure interface typically has a certain angular range of motion (mainly swing and pitch allowances). Typical structures that achieve this movable connection include: Pivot hinge: The cleaning head is connected to the body via a horizontal pivot, allowing for forward and backward tilting. Its drawbacks are: it has only one degree of freedom, only able to swing within a single plane, and cannot adapt to complex curved surfaces; hair and dust easily get tangled and accumulate at the pivot, making cleaning difficult and prone to jamming after long-term use. Ball joint: Although it provides multiple degrees of freedom, it has a complex structure, high frictional resistance between the ball and the socket, and the gap also has problems of entanglement and dust accumulation. Elastic soft rubber connection: It relies on the deformation of rubber parts to provide flexibility, but the elasticity is easily decayed, it cannot provide a certain restoring force, and the posture control is inaccurate.

[0003] Therefore, there is an urgent need for a universal connector that is free of physical hinges, frictionless, fully sealed, and capable of multi-degree-of-freedom universal motion. Summary of the Invention

[0004] In order to solve the above-mentioned technical problems, the purpose of this invention is to provide a universal connector based on the magnetic levitation mechanism, which has good sealing characteristics and no friction or physical hinge structure.

[0005] To achieve the above objectives, the technical solution of the present invention is as follows: A universal connector includes a flexible tube and two rigid tubes made of non-magnetic material. The two rigid tubes are spaced apart along the axial direction. The flexible tube is located between the two rigid tubes, and the axial length of the flexible tube is less than the diameter of the rigid tube. Both ends of the flexible tube are sealed and connected to the adjacent ends of the two rigid tubes, and there is a margin of movement between the two rigid tubes. A magnetic body is provided at the adjacent ends of the two rigid tubes, and the magnetic poles on the adjacent sides of the magnetic bodies on the two rigid tubes are the same. The repulsive force between the magnetic bodies on the two rigid tubes drives the two rigid tubes to move away from each other.

[0006] The beneficial effects of the above-mentioned technical solution of the present invention are as follows: the two rigid tubes tend to move away from each other under the repulsive force of like poles of the magnetic body, thereby making the flexible tube and the magnetic body together exhibit a certain rigidity so that the whole universal connector has supporting characteristics, while also exhibiting a certain flexibility so that there is room for universal movement between the two rigid tubes.

[0007] The present invention can be further improved in the following ways based on the above technical solution: Furthermore, the two rigid tubes are respectively a first rigid tube and a second rigid tube, the magnetic material on the first rigid tube is a first magnetic material, and the magnetic material on the second rigid tube is a second magnetic material; The first magnetic body is provided in multiple ways, and the multiple first magnetic bodies are evenly spaced along the circumference at the corresponding ends of the first rigid tube, or the first magnetic body is a ring body and is coaxially arranged at the corresponding ends of the first rigid tube. The second magnetic body is provided in multiple ways, and the multiple second magnetic bodies are evenly spaced along the circumference at the corresponding ends of the second rigid tube, or the second magnetic body is a ring body and is coaxially arranged at the corresponding ends of the second rigid tube.

[0008] The beneficial effect of the above technical solution is that it makes the magnetic repulsive force on the two rigid tubes at their close ends more balanced in the circumferential direction.

[0009] Furthermore, two flexible tubes are provided, namely an inner flexible tube and an outer flexible tube. The inner flexible tube is located inside the outer flexible tube. Each of the two rigid tubes has an outer flange ring at one end close to each other. The two ends of the inner flexible tube are respectively sealed and connected to the inner side of the two outer flange rings, and the two ends of the outer flexible tube are respectively sealed and connected to the outer side of the two outer flange rings. The magnetic body is disposed on the outer flange ring and located between the outer flexible tube and the inner flexible tube.

[0010] The beneficial effects of the above technical solution are as follows: the inner flexible tube mainly serves to connect and conduct the two rigid tubes, while the outer flexible tube mainly serves to isolate the magnetic body from the outside world, preventing the magnetic body from sucking iron filings and other external objects into the space between the two rigid tubes. Of course, the inner flexible tube can also isolate the magnetic body, preventing iron filings passing through the universal connector from being attracted by the magnetic body.

[0011] Furthermore, it also includes multiple limiting cables, which are arranged circumferentially between the two rigid tubes. The two ends of each limiting cable are connected to the corresponding ends of the two rigid tubes, and the multiple limiting cables are used to cooperate in limiting the amount of movement between the two rigid tubes.

[0012] The beneficial effect of the above technical solution is that by setting multiple limiting cables, the distance and offset between the two rigid tubes are limited by multiple limiting cables, which allows for a certain amount of redundancy in the length of the flexible tube.

[0013] The second objective of this invention is to provide a cleaning head with a simple structure and omnidirectional motion characteristics based on the magnetic levitation mechanism.

[0014] To achieve the above objectives, the technical solution of the present invention is as follows: a cleaning head, comprising a dust suction cover and a universal connector as described above, wherein the dust suction cover has a dust suction port and a dust discharge port, wherein one end of the rigid tube away from the flexible tube is sealed and connected to the dust discharge port or integrally formed, and the other end of the rigid tube away from the flexible tube serves as a negative pressure interface.

[0015] The beneficial effects of the above-mentioned technical solution of the present invention are as follows: by connecting the universal connector to the dust collection housing, so as to facilitate the connection with the main body of the vacuum cleaner, the universal connector provides universal movement margin for the dust collection housing, and the dust, hair and other debris that pass through will not accumulate in the universal connector, and there is no risk of the universal connector getting stuck.

[0016] The present invention can be further improved in the following ways based on the above technical solution: Furthermore, the dust collection cover is straight, the dust suction port is located at the lower end of the dust collection cover, the dust outlet is located at the middle part corresponding to the length direction of the dust collection cover, and the axis of the dust outlet and the axis of the dust suction port are intersected, and the included angle between them is an obtuse angle.

[0017] The beneficial effects of the above technical solution are as follows: the dust outlet is centrally distributed on the dust collection cover, so that the dust and debris sucked in by the dust collection port can be promptly drawn through the universal connector, and the included angle between the dust outlet and the dust collection port is set to an obtuse angle, which is more in line with the usage habits of vacuum cleaners.

[0018] Furthermore, it also includes a brush roller, an electric drive unit, and a counterweight. The brush roller is disposed inside the dust collection housing, and both ends of the brush roller are rotatably connected to both ends of the dust collection housing. The electric drive unit and the counterweight are respectively disposed at both ends of the dust collection housing, and the electric drive unit is drively connected to either end of the brush roller.

[0019] The beneficial effects of the above technical solution are as follows: by setting up a brush and a sweeping roller and an electric drive unit connected to it, the brush and sweeping roller can sweep up and suck away the dust and debris on the surface of the object being cleaned during the vacuuming operation. The counterweight block that cooperates with the electric drive unit is set on the vacuuming housing, so that the vacuuming housing has good stability relative to the universal connector.

[0020] Furthermore, the brush roller includes a roller shaft and multiple flexible blades. The two ends of the roller shaft are rotatably connected to the two ends of the dust collection cover. The multiple flexible blades are spirally arranged on the outer periphery of the roller shaft, and the multiple flexible blades are circumferentially spaced on the roller shaft. The two ends of each flexible blade extend to the two ends close to the roller shaft.

[0021] The beneficial effects of the above technical solution are as follows: by setting flexible blades, the brush roller has better quiet characteristics and less wear during brushing operations. Furthermore, by setting the flexible blades in a spiral shape, the friction between the brush roller and the object being cleaned during brushing operations can be further reduced, while also improving the stability of the cleaning head during operation.

[0022] Furthermore, the outer periphery of the roller shaft is provided with a plurality of spiral male connectors, each of which corresponds to a plurality of flexible blades. Each flexible blade is provided with a female connector on one side, which engages with and inserts into the male connector to detachably assemble the flexible blade onto the outer periphery of the roller shaft. Wherein, the male connector is a connector groove and the female connector is a connector strip, or the male connector is a connector strip and the female connector is a connector groove.

[0023] The beneficial effect of the above technical solution is that it makes it easy to replace the flexible blades on the roller.

[0024] The third objective of this invention is to provide a cleaning head with a simple structure and omnidirectional motion characteristics based on the magnetic levitation mechanism.

[0025] To achieve the above objectives, the technical solution of the present invention is as follows: a vacuum cleaner, including the cleaning head as described above.

[0026] The beneficial effects of the above-mentioned technical solution of the present invention are as follows: the cleaning head of the vacuum cleaner has a good omnidirectional range of motion and is not easy to get stuck. Attached Figure Description

[0027] Figure 1 This is an elevation view of the universal connector described in Embodiment 1 of the present invention; Figure 2 This is a cross-sectional view of the universal connector described in Embodiment 1 of the present invention; Figure 3 This is a schematic diagram of the connection between the first rigid tube and the flexible tube in Embodiment 1 of the present invention; Figure 4 This is a schematic diagram of the connection between the second rigid tube and the flexible tube in Embodiment 1 of the present invention; Figure 5 This is a schematic diagram of the universal connector described in Embodiment 2 of the present invention; Figure 6 This is a schematic diagram of the upper limit cable setting for the threading hole in Embodiment 2 of the present invention; Figure 7 This is a perspective view of the cleaning head described in Embodiment 3 of the present invention; Figure 8 This is a top-view perspective of the cleaning head described in Embodiment 3 of the present invention. Figure 9 This is a front view of the cleaning head described in Embodiment 3 of the present invention; Figure 10 for Figure 9 Sectional view at point AA; Figure 11 This is a perspective view of the cleaning head described in Embodiment 4 of the present invention; Figure 12 This is a bottom view of the cleaning head described in Embodiment 4 of the present invention; Figure 13 This is an elevation view of the brush roller described in Embodiment 4 of the present invention; Figure 14 This is a front view of the brush roller described in Embodiment 4 of the present invention; Figure 15 for Figure 14 Sectional view at point AA; Figure 16 This is an elevation view of the roller shaft described in Embodiment 4 of the present invention; Figure 17 This is an elevation view of the flexible blade described in Embodiment 4 of the present invention; Figure 18 This is a schematic diagram of the vacuum cleaner described in Embodiment 5 of the present invention.

[0028] In the diagram: 1. Cleaning head; 11. Universal connector; 111. Flexible tube; 111a. Inner flexible tube; 111b. Outer flexible tube; 112. Rigid tube; 112a. First rigid tube; 112b. Second rigid tube; 1121. Outer flange ring; 1122. Threading hole; 113. Magnetic body; 112a. First rigid tube; 112b. Second rigid tube; 113a. First magnetic body; 113b. Second magnetic body; 114. Limiting cable; 12. Suction. 1. Dust cover; 121. Suction port; 122. Dust outlet; 123. Protrusion; 124. Protective cover; 13. Brush roller; 131. Roller shaft; 1311. Male connector; 132. Flexible blades; 1321. Female connector; 14. Electric drive unit; 15. Counterweight; 2. Vacuum cleaner body; 21. Negative pressure fan; 22. Suction hose; 3. Main power cable; 31. Plug; 4. Secondary power cable; 41. Connecting plug; 5. Connecting socket; 6. Power switch. Detailed Implementation

[0029] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0030] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0031] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this technology based on the specific circumstances.

[0032] In the description of this application, spatial relation terms such as "below," "under," "below," "below," "above," "over," etc., are used herein to describe the relationship between one element or feature shown in the figures and other elements or features. It should be understood that, in addition to the orientation shown in the figures, spatial relation terms also include different orientations of the device in use and operation. For example, if the device in the figures is flipped, an element or feature described as "below" or "under" or "below" of other elements or features will be oriented "above" other elements or features. Therefore, the exemplary terms "below" and "under" can include both upper and lower orientations. Furthermore, the device may also include other orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptive terms used herein are interpreted accordingly.

[0033] In the description of this application, the term "for example" is used to mean "used as an example, illustration, or description." Any embodiment described as "for example" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to make and use the invention. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that the invention can be made without using these specific details. In other instances, well-known structures and processes will not be described in detail to avoid obscuring the description of the invention with unnecessary detail. Therefore, the invention is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.

[0034] Example 1 like Figure 1 and Figure 2 As shown, this embodiment provides a universal connector 11, including a flexible tube 111 and two rigid tubes 112 made of non-magnetic material. The two rigid tubes 112 are spaced apart along the axial direction. The flexible tube 111 is located between the two rigid tubes 112, and the axial length of the flexible tube 111 is smaller than the diameter of the rigid tube 112. The two ends of the flexible tube 111 are respectively sealed and connected to the adjacent ends of the two rigid tubes 112, and there is a movement margin between the two rigid tubes 112. A magnetic body 113 is provided at the adjacent ends of the two rigid tubes 112, and the magnetic poles on the adjacent sides of the magnetic bodies 113 on the two rigid tubes 112 are the same. The repulsive force between the magnetic bodies 113 on the two rigid tubes 112 is used to drive the two rigid tubes 112 to tend to move away from each other. This allows the two rigid tubes 112 to tend to move away from each other under the repulsive force of the like poles of the magnetic body 113 (thus the flexible tube 111 always tends to unfold), thereby making the flexible tube 111 and the magnetic body 113 work together to exhibit a certain rigidity so that the entire universal connector 11 has supporting characteristics, while also exhibiting a certain flexibility so that there is room for universal movement between the two rigid tubes 112.

[0035] In this embodiment, the flexible tube 111, in conjunction with the magnetic body 113, enables the universal connector 11 to have both omnidirectional mobility and certain support characteristics. Consequently, under the action of external force, the two rigid tubes 112 can cause the universal connector 11 to bend at the flexible tube 111. After the external force is removed, the universal connector 11 will automatically recover under the repulsive force of the magnetic body 113.

[0036] In this embodiment, a flexible tube 111 is connected between two rigid tubes 112. Since the length of the flexible tube 111 is limited, the flexible tube 111 has a certain limiting effect on the spacing and offset between the two rigid tubes 112, and at the same time provides a certain amount of mobility for the two rigid tubes 112.

[0037] like Figures 2-4 As shown, in this embodiment, the two rigid tubes 112 are respectively a first rigid tube 112a and a second rigid tube 112b. The magnetic body 113 on the first rigid tube 112a is the first magnetic body 113a, and the magnetic body 113 on the second rigid tube 112b is the second magnetic body 113b. Multiple first magnetic bodies 113a are provided, and these multiple first magnetic bodies 113a are evenly spaced circumferentially at corresponding ends of the first rigid tube 112a, or the first magnetic body 113a is a ring-shaped body and is coaxially arranged at corresponding ends of the first rigid tube 112a. Similarly, multiple second magnetic bodies 113b are provided, and these multiple second magnetic bodies 113b are evenly spaced circumferentially at corresponding ends of the second rigid tube 112b, or the second magnetic body 113b is a ring-shaped body and is coaxially arranged at corresponding ends of the second rigid tube 112b. This ensures that the magnetic repulsive force experienced circumferentially at the ends of the two rigid tubes 112 that are close to each other is relatively balanced.

[0038] like Figures 2-4 As shown, in this embodiment, there are four ways to arrange the first magnetic body 113a and the second magnetic body 113b, namely: i. Multiple first magnetic bodies 113a and multiple second magnetic bodies 113b can be arranged and distributed at intervals along the circumferential direction; ii. Multiple first magnetic bodies 113a are distributed at intervals along the circumferential direction, while the second magnetic body 113b is annular; iii. Multiple second magnetic bodies 113b are distributed at intervals along the circumferential direction, while the first magnetic body 113a is annular; iv. Both the first magnetic body 113a and the second magnetic body 113b are annular.

[0039] in, Figure 2 Both magnetic bodies 113 are circular rings.

[0040] In this embodiment, two flexible tubes 111 are provided, namely an inner flexible tube 111a and an outer flexible tube 111b. The inner flexible tube 111a is located inside the outer flexible tube 111b. Each of the two rigid tubes 112 has an outer flange ring 1121 at one end close to each other. The two ends of the inner flexible tube 111a are respectively sealed and connected to the inner side of the two outer flange rings 1121, and the two ends of the outer flexible tube 111b are respectively sealed and connected to the outer side of the two outer flange rings 1121. The magnetic body 113 is disposed on the outer flange ring 1121 and located between the outer flexible tube 111b and the inner flexible tube 111a. This allows the inner flexible tube 111a to primarily connect and conduct the two rigid tubes 112, while the outer flexible tube 111b primarily serves to isolate the magnetic body 113 from the outside world, preventing the magnetic body 113 from drawing iron filings and other external materials into the space between the two rigid tubes 112. Of course, the inner flexible tube 111a can also isolate the magnetic body 113, preventing iron filings passing through the universal connector 11 from being attracted by the magnetic body 113.

[0041] In this embodiment, the length of the outer flexible tube 111b can be slightly greater than the length of the inner flexible tube 111a, so that when the universal connector 11 is bent, the outer flexible tube 111b will not interfere with the bending of the inner flexible tube 111a.

[0042] In this embodiment, the flexible tube 111 and the rigid tube 112 can be sealed together by bonding, embedding, heat fusion, etc. In this embodiment, the flexible tube 111 can be a rubber tube or a flexible plastic tube (TPU hose or nylon hose, etc.), and the rigid tube 112 can be a rigid plastic tube (such as a polyvinyl chloride rigid tube or a polypropylene rigid tube, etc.) or a metal tube (such as an aluminum alloy tube, copper tube, etc.). In this embodiment, the diameters (inner diameters) of the two rigid tubes 112 are equivalent, and the diameters of the two rigid tubes 112 are both greater than the axial length of the flexible tube 111. In this embodiment, the length of the flexible tube 111 should not be too long; otherwise, the magnetic bodies 113 on the two rigid tubes 112 will have too small a repulsive force due to the large spacing, which will result in the stiffness of the flexible tube 111 being too weak and losing its supporting characteristics.

[0043] Example 2 Same as Example 1, except that, as Figure 5As shown, the universal connector 11 in this embodiment also includes multiple limiting cables 114. These limiting cables 114 are spaced circumferentially between the two rigid tubes 112. Each limiting cable 114 has its two ends connected to the corresponding ends of the two rigid tubes 112. The multiple limiting cables 114 work together to limit the movement margin between the two rigid tubes 112. By using multiple limiting cables 114, the distance and offset between the two rigid tubes 112 are limited by these cables. The flexible tube 111 only needs to connect the two rigid tubes 112 and isolate the magnetic body 113. In this case, a certain amount of redundancy in the length of the flexible tube 111 is allowed (i.e., the length of the flexible tube 111 is slightly greater than the maximum axial distance between the two rigid tubes 112). Both the outer flexible tube 111b and the inner flexible tube 111a have length redundancy.

[0044] In this embodiment, both outer flange rings 1121 are provided with multiple axially penetrating and circumferentially spaced threading holes 1122, and the number of threading holes 1122 on the two outer flange rings 1121 is the same and corresponds one-to-one. At this time, the corresponding two threading holes 1122 are matched with a limiting cable 114. The two ends of each limiting cable 114 pass through the corresponding two threading holes 1122, and the two ends of each limiting cable 114 are knotted to form an enlarged end (the enlarged end is large in size and will not come out of the threading hole 1122), or as... Figure 5 and Figure 6 As shown, the multiple threading holes 1122 on each of the outer flange rings 1121 are arranged in pairs. The two threading holes 1122 in the same pair are close to each other, and the limiting cables 114 corresponding to the two threading holes 1122 in the same pair are threaded out and tied together or integrally formed. At this time, the two corresponding limiting cables 114 are in a ring shape.

[0045] The threading hole 1122 is located between the outer flexible tube 111b and the inner flexible tube 111a, thus preventing the threading hole 1122 from communicating with the internal channel of the universal connector 11 and affecting the sealing performance.

[0046] Example 3 like Figures 7-10As shown, this embodiment provides a cleaning head 1, including a dust collection housing 12 and a universal connector 11 as described in Embodiment 1 or Embodiment 2. The dust collection housing 12 has a suction port 121 and a dust outlet 122. One end of the rigid tube 112, away from the flexible tube 111, is sealed or integrally connected to the dust outlet 122. The other end of the rigid tube 112, away from the flexible tube 111, serves as a negative pressure interface. By connecting the universal connector 11 to the dust collection housing 12, it is easy to connect to the vacuum cleaner body 2. At this time, the universal connector 11 provides universal movement allowance for the dust collection housing, and the dust, hair, etc. passing through will not accumulate in the universal connector 11, and there is no risk of the universal connector 11 getting stuck.

[0047] like Figure 9 and Figure 10 As shown, in this embodiment, the dust collection cover 12 is a straight strip shape. The dust suction port 121 is located at the lower end of the dust collection cover 12, and the dust outlet 122 is located at the middle of the length direction of the dust collection cover 12. The axis of the dust outlet 122 and the axis of the dust suction port 121 intersect, and the included angle α between them is an obtuse angle (e.g., ...). Figure 10 As shown), α can be any value among 120°, 130°, 140°, and 150°, or a range between any two values. The dust outlet 122 is centrally located on the dust collection housing 12, so that the dust sucked in by the suction port 121 can be promptly drawn through the universal connector 11. The angle between the dust outlet 122 and the suction port 121 is set to an obtuse angle, which is more in line with the usage habits of vacuum cleaners.

[0048] In this embodiment, the suction port 121 is also strip-shaped, with both ends extending to the ends near the suction housing 12.

[0049] like Figure 8 As shown, in this embodiment, the lower end of the dust collection cover 12 is provided with a plurality of protrusions 123 at intervals corresponding to at least one side of the dust collection port 121. The thickness of the protrusions 123 is preferably 1-5mm (specifically, it can be any value or a range between any two values ​​of 1mm, 2mm, 3mm, 4mm or 5mm). This can prevent the dust collection cover 12 from being sealed and attached to the object being cleaned during operation, thus preventing the surrounding dust from being sucked up. The protrusions 123 can make the lower end of the dust collection cover 12 maintain a small gap with the surface of the object being cleaned so as to facilitate the suction of surrounding dust.

[0050] In this embodiment, the first rigid tube 112a can be connected to the dust collection cover 12, while the corresponding end of the second rigid tube 112b serves as a negative pressure interface.

[0051] Example 4 Same as Example 3, except that, as Figure 11 and Figure 12 As shown, in this embodiment, the cleaning head 1 further includes a brush roller 13, an electric drive unit 14, and a counterweight 15. The brush roller 13 is disposed inside the dust collection housing 12, and both ends of the brush roller 13 are rotatably connected to both ends of the dust collection housing 12. The electric drive unit 14 and the counterweight 15 are respectively disposed at both ends of the dust collection housing 12, and the electric drive unit 14 is drive-connected to any end of the brush roller 13. By setting the brush roller 13 and the drive unit 14 connected to it, the cleaning head 1 can sweep up and suck away dust and debris from the surface of the object being cleaned during vacuuming operations. The counterweight 15, which cooperates with the electric drive unit 14, is disposed on the dust collection housing 12, thus giving the dust collection housing 12 better stability relative to the universal connector 11.

[0052] like Figure 11 and Figure 12 As shown, in this embodiment, the electric drive component 14 can be a drive motor. The electric drive component 14 is disposed on the side of the dust collection housing 12 near the universal connector 11, and the corresponding ends of the electric drive component 14 and the brush roller 13 can be connected by a belt or chain (when using a belt, both the electric drive component 14 and the brush roller 13 are provided with pulleys; when using a chain, both the electric drive component 14 and the brush roller 13 are provided with sprockets. This is prior art and will not be elaborated here). To prevent hair from getting tangled at the transmission connection between the electric drive component 14 and the brush roller 13, a protective cover 124 can be provided on the dust collection housing 12 at the location corresponding to the belt or chain, so that the belt is not exposed on the cleaning head 1.

[0053] like Figures 13-17 As shown, the brush roller 13 in this embodiment includes a roller shaft 131 and multiple flexible blades 132. The two ends of the roller shaft 131 are rotatably connected to the two ends of the dust collection housing 12. The multiple flexible blades 132 are spirally arranged on the outer circumference of the roller shaft 131, and are spaced circumferentially along the roller shaft 131. Each flexible blade 132 extends to both ends near the roller shaft 131. By providing the flexible blades 132, the brush roller 13 exhibits better noise reduction and less wear during brushing operations. Furthermore, the spiral arrangement of the flexible blades 132 further reduces the friction between the brush roller 13 and the object being cleaned during brushing operations, while also ensuring the stability of the cleaning head 1 during operation.

[0054] like Figure 12As shown, in this embodiment, the brush roller 13 is located directly above the suction port 121 inside the dust collection housing 12, and when the lower end of the dust collection housing 12 rests on the surface of the object being cleaned, the flexible blades 132 on the brush roller 13 can contact the surface of the object being cleaned, so that the brush roller 13 can scrape the surface of the object being cleaned when it rotates.

[0055] like Figures 13-17 As shown, in this embodiment, the flexible blade 132 is strip-shaped, and the central arc angle corresponding to the circumferential misalignment at both ends should not be too large, typically between 60-120° (specifically, it can be any value or range between any two values ​​from 60°, 70°, 80°, 90°, 100°, 110°, and 120°). Preferably, four flexible blades 132 are provided, and the central arc angle corresponding to the circumferential misalignment at both ends of each flexible blade 132 is 90° (that is, the phase difference between the two ends of each flexible blade in the circumferential direction is 90°). The multiple flexible blades 132 are evenly distributed in the circumferential direction, so that the multiple flexible blades 132 are arranged clockwise (e.g., ...). Figure 13 The dashed arrows indicate a clockwise direction, and the ends of each of the flexible blades 132 ( Figure 13 The end marked "B" in the middle) and the tip of the next flexible blade ( Figure 13 Align the end marked "A" along the axis.

[0056] by Figure 15 For example, in a cross-sectional view perpendicular to the axis of the brush roller 13, the phase difference between the cross-sectional views of two adjacent flexible blades is 90°.

[0057] like Figures 13-17 As shown, in this embodiment, the outer periphery of the roller shaft 131 is provided with a plurality of spiral-shaped male connectors 1311, each corresponding to a plurality of flexible blades 132. Each flexible blade 132 has a female connector 1321 on one side. The female connector 1321 engages with the male connector 1311 to detachably mount the flexible blade 132 onto the outer periphery of the roller shaft 131. The male connector 1311 is a groove, and the female connector 1321 is a strip, or vice versa. This allows for convenient replacement of the flexible blades 132 on the roller shaft 131.

[0058] Preferably, the male connector 1311 is a connector groove, and the female connector 1321 is a connector strip. The groove of the male connector 1311 is narrowed, and the female connector 1321 is a strip-shaped body that cooperates with the male connector 1311. The female connector 1321 can be gradually inserted into the male connector 1311 from any end of the male connector 1311, and the groove of the male connector 1311 is used for the flexible blade 132 to pass through.

[0059] Example 5 like Figure 18 As shown, this embodiment provides a vacuum cleaner, including a cleaning head 1 as described in Embodiment 3 or Embodiment 4. The cleaning head 1 of the vacuum cleaner has good omnidirectional mobility and is not easy to get stuck.

[0060] like Figure 18 As shown, the vacuum cleaner provided in this embodiment also includes a vacuum cleaner body 2 and a main power cord 3. The vacuum cleaner body 2 has a built-in negative pressure fan 21 and a rigid suction tube 22 for connecting to the negative pressure interface. One end of the main power cord 3 is connected to the vacuum cleaner body 2, and the other end is provided with a plug 31 for connecting to a power socket to supply power to the vacuum cleaner body 2. If the cleaning head 1 is the cleaning head provided in embodiment 4, it has an electric drive component 14. In this case, the vacuum cleaner body 2 is also provided with a secondary conductive wire 4. One end of the secondary conductive wire 4 is electrically connected to the vacuum cleaner body 2, and the other end is electrically connected to the cleaning head 1 to supply power to the electric drive component 14.

[0061] The structure of the vacuum cleaner body 2 described in this embodiment, as well as its built-in negative pressure fan 21 and suction pipe 22, are all existing technologies and will not be described in detail here.

[0062] Since the connection between the cleaning head 1 and the suction tube 22 is a pluggable connection, the two ends of the secondary conductive wire 4 can be respectively provided with a docking plug 41, and the suction cover 12 and the vacuum cleaner body 2 can be provided with docking sockets 5 that cooperate with the docking plug 41. At this time, the docking plugs 41 at both ends of the secondary conductive wire 4 can be plugged into the two docking sockets 5 respectively to achieve electrical connection, or unplugged to disconnect the electrical connection.

[0063] Specifically, the vacuum cleaner body 2 has a power switch 6, one end of the main power cord 3 connected to the vacuum cleaner body 2 extends to be electrically connected to the input end of the power switch 6, and the negative pressure fan 21 and the docking socket 5 on the vacuum cleaner body 2 are both electrically connected to the output end of the power switch 6, while the docking socket 5 on the cleaning head 1 is electrically connected to the electric drive unit 14.

[0064] The vacuum cleaner described in this embodiment can be a vacuum cleaner for cleaning floors, or a vacuum cleaner for removing dust or mites from mattresses or lint.

[0065] While embodiments or examples of this disclosure have been described with reference to the accompanying drawings, it should be understood that the above embodiments are merely exemplary embodiments or examples, and the scope of the invention is not limited by these embodiments or examples, but only by the granted claims and their equivalents. Various elements in the embodiments or examples may be omitted or replaced by their equivalents. Furthermore, the steps may be performed in a different order than that described in this disclosure. Further, various elements in the embodiments or examples may be combined in various ways. Importantly, as the technology evolves, many elements described herein can be replaced by equivalents that appear after this disclosure.

Claims

1. A universal connector, characterized in that, The device includes a flexible tube (111) and two rigid tubes (112) made of non-magnetic material. The two rigid tubes (112) are spaced apart along the axial direction. The flexible tube (111) is located between the two rigid tubes (112), and the axial length of the flexible tube (111) is less than the diameter of the rigid tubes (112). The two ends of the flexible tube (111) are respectively sealed and connected to the ends of the two rigid tubes (112) that are close to each other. There is a margin of movement between the two rigid tubes (112). A magnetic body (113) is provided at the ends of the two rigid tubes (112) that are close to each other. The magnetic poles of the magnetic bodies (113) on the two rigid tubes (112) are the same on the side that are close to each other. The repulsive force between the magnetic bodies (113) on the two rigid tubes (112) is used to drive the two rigid tubes (112) to move away from each other.

2. The universal connector according to claim 1, characterized in that, The two rigid tubes (112) are a first rigid tube (112a) and a second rigid tube (112b), respectively. The magnetic body (113) on the first rigid tube (112a) is a first magnetic body (113a), and the magnetic body (113) on the second rigid tube (112b) is a second magnetic body (113b). The first magnetic body (113a) is provided in multiple ways, and the multiple first magnetic bodies (113a) are evenly spaced along the circumferential direction at the corresponding ends of the first rigid tube (112a), or the first magnetic body (113a) is a ring body and is coaxially arranged at the corresponding ends of the first rigid tube (112a). Multiple second magnetic bodies (113b) are provided, and the multiple second magnetic bodies (113b) are evenly spaced along the circumference at the corresponding ends of the second rigid tube (112b), or the second magnetic body (113b) is an annular body and is coaxially arranged at the corresponding ends of the second rigid tube (112b).

3. The universal connector according to claim 1 or 2, characterized in that, Two flexible tubes (111) are provided, namely an inner flexible tube (111a) and an outer flexible tube (111b). The inner flexible tube (111a) is located inside the outer flexible tube (111b). The two rigid tubes (112) are provided with an outer flange ring (1121) at their close ends. The two ends of the inner flexible tube (111a) are respectively sealed and connected to the inner side of the two outer flange rings (1121). The two ends of the outer flexible tube (111b) are respectively sealed and connected to the outer side of the two outer flange rings (1121). The magnetic body (113) is provided on the outer flange ring (1121) and located between the outer flexible tube (111b) and the inner flexible tube (111a).

4. The universal connector according to claim 1 or 2, characterized in that, It also includes multiple limiting cables (114), which are arranged circumferentially between the two rigid tubes (112). The two ends of each limiting cable (114) are respectively connected to the corresponding ends of the two rigid tubes (112). The multiple limiting cables (114) are used to cooperate in limiting the movement margin between the two rigid tubes (112).

5. A cleaning head, characterized in that, Includes a dust collection housing (12) and a universal connector (11) as described in any one of claims 1-4, wherein the dust collection housing (12) has a dust collection port (121) and a dust outlet (122), wherein one end of the rigid tube (112) away from the flexible tube (111) is sealed or integrally formed with the dust outlet (122), and the other end of the rigid tube (112) away from the flexible tube (111) serves as a negative pressure interface.

6. The cleaning head according to claim 5, characterized in that, The dust collection cover (12) is a straight strip, the dust collection port (121) is located at the lower end of the dust collection cover (12), the dust outlet (122) is located in the middle of the length direction of the dust collection cover (12), and the axis of the dust outlet (122) and the axis of the dust collection port (121) are intersected, and the included angle between them is an obtuse angle.

7. The cleaning head according to claim 6, characterized in that, It also includes a brush roller (13), an electric drive unit (14), and a counterweight (15). The brush roller (13) is disposed inside the dust collection housing (12), and the two ends of the brush roller (13) are rotatably connected to the two ends of the dust collection housing (12). The electric drive unit (14) and the counterweight (15) are respectively disposed at the two ends of the dust collection housing (12), and the electric drive unit (14) is drivenly connected to any end of the brush roller (13).

8. The cleaning head according to claim 7, characterized in that, The brush roller (13) includes a roller shaft (131) and multiple flexible blades (132). The two ends of the roller shaft (131) are rotatably connected to the two ends of the dust collection cover (12). The multiple flexible blades (132) are spirally arranged on the outer periphery of the roller shaft (131), and the multiple flexible blades (132) are circumferentially spaced on the roller shaft (131). The two ends of each flexible blade (132) extend to the two ends close to the roller shaft (131).

9. The cleaning head according to claim 8, characterized in that, The outer periphery of the roller shaft (131) is provided with a plurality of spiral male connectors (1311), and the plurality of male connectors (1311) correspond one-to-one with the plurality of flexible blades (132). Each flexible blade (132) is provided with a female connector (1321) on one side. The female connector (1321) and the male connector (1311) cooperate and connect to each other so that the flexible blade (132) can be detachably assembled to the outer periphery of the roller shaft (131). Wherein, the male part (1311) is a plug groove, the female part (1321) is a plug strip, or the male part (1311) is a plug strip and the female part (1321) is a plug groove.

10. A vacuum cleaner, characterized in that, Includes the cleaning head (1) as described in any one of claims 5-9.

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