A connecting tube for a cleaning device

Abstract

The application relates to a connecting pipe of a cleaning device. The connecting pipe of the cleaning device is used for connecting a handheld part and a cleaning part of the cleaning device, and allows impurities cleaned at the cleaning part to enter the handheld part after passing through the connecting pipe; the connecting pipe comprises a deformable pipe. The deformable pipe has a bent state and an original state. When an external force value received by the deformable pipe is greater than a preset value, the deformable pipe can be bent into the bent state, and when the external force value is less than or equal to the preset value, the deformable pipe can automatically restore to the original state. The deformable pipe of the application makes the whole connecting pipe bendable and restore to the original state, and is convenient for cleaning some low scenes. The connecting pipe of the application has the advantages of simple structure, simple appearance, small space occupation, convenient use and low cost. Compared with a direct corrugated pipe design, the deformable pipe of the application is good in supportability, sufficient in rigidity, difficult to fatigue failure, difficult to twist deformation and damage in the bendable case.

Description

Technical Field

[0001] This application relates to the field of cleaning device technology, and in particular to a connecting pipe for a cleaning device. Background Technology

[0002] Currently available floor cleaning equipment, especially handheld vacuum cleaners, generally consists of a main unit module, a metal tube module, and a floor brush module. The metal tube comprises a connector assembly for the main unit, the tube body, and a connector assembly for the floor brush. The tube body connects the main unit and the floor brush, transferring the suction power generated by the fan on the main unit to the floor brush nozzle, while simultaneously transferring dust and debris sucked up by the floor brush into the dustbin on the main unit. Additionally, the connecting tube also serves as a support, seal, and cable routing tool.

[0003] In low-lying applications such as under beds and sofas, the connecting tubes of current cleaning devices cannot be bent, forcing users to bend over during cleaning, resulting in a poor user experience, especially for elderly people with back or leg problems. Most current solutions involve adding a bending tube assembly to the tube to avoid bending. However, traditional bending tube assemblies typically consist of a corrugated tube between two rigid tubes. While this design facilitates bending, the support at the corrugated tube is insufficient, leading to fatigue failure due to lack of rigidity. Furthermore, the corrugated tube is prone to torsional deformation during multi-directional vacuuming, accelerating its failure, and it is difficult to return to its original position after torsion or bending. Utility Model Content

[0004] Therefore, it is necessary to provide a connecting pipe for a cleaning device to address the aforementioned problems and solve the problems mentioned above with the connecting pipes of existing cleaning devices.

[0005] On one hand, this application provides a connecting pipe for a cleaning device, the connecting pipe being used to connect the handheld part and the cleaning part of the cleaning device, and allowing impurities cleaned at the cleaning part to enter the handheld part after passing through the connecting pipe; the connecting pipe includes a deformable tube;

[0006] The deformable tube has a bent state and an original state. When the external force applied to it is greater than a preset value, the deformable tube can be bent into the bent state, and when the external force is less than or equal to the preset value, it can automatically return to the original state.

[0007] Optionally, the hardness of the deformable tube is 50-90HA;

[0008] The bending angle of the deformable tube is -50° to 50°.

[0009] Optionally, the deformable tube is symmetrical in a first preset direction;

[0010] The deformable tube is symmetrical in a second preset direction; wherein, the second preset direction is the direction in which the central axis of the deformable tube extends, and the second preset direction is perpendicular to the first preset direction; and

[0011] The deformable tube is asymmetrical in a third preset direction, wherein the third preset direction is perpendicular to the first preset direction and the third preset direction is perpendicular to the second preset direction;

[0012] The deformable tube can rotate around an axis parallel to the first preset direction to the bent state.

[0013] Optionally, the deformable tube includes:

[0014] A support portion extending along a second predetermined direction, wherein the second predetermined direction is the direction in which the central axis of the deformable tube extends; and

[0015] The folding part is folded in the second preset direction, and the two ends of the folding part are connected to the support part at the two ends perpendicular to the second preset direction. The middle part is located on one side of the support part in the third preset direction and is formed into a tube with the support part, wherein the third preset direction is perpendicular to the second preset direction.

[0016] Optionally, the wall thickness of the folded portion is less than the wall thickness at the support portion; and / or

[0017] The wall thickness at the bend of the folded portion is greater than the wall thickness at other parts of the folded portion.

[0018] Optionally, in the direction from near the support to away from the support, two adjacent folds of the folded portion are parallel to each other or form a radial fan shape or wing shape;

[0019] The folded portions have the same folding distance after being cut along the plane passing through the central axis.

[0020] Optionally, it also includes a sliding locking cover, which is sleeved on the outside of the connecting tube and prevents the deformable tube from bending when the sliding locking cover slides to the outside of the deformable tube, and allows the deformable tube to bend when it slides away from the deformable tube.

[0021] Optionally, the connecting pipe further includes an upper pipe connected to one side of the deformable tube and a lower pipe disposed on the other side of the deformable tube;

[0022] The sliding lock cover has a locked position and an unlocked position relative to the connecting tube; wherein, the sliding lock cover is in the locked position when it is sleeved on the deformable tube, and in the unlocked position when it is sleeved on the upper tube or the lower tube.

[0023] A locking assembly is provided between the sliding cover and the connecting tube, so that the sliding cover is engaged in both the locked and unlocked positions to prevent the sliding cover from sliding relative to the connecting tube.

[0024] Optionally, the locking assembly includes:

[0025] A protrusion is provided on the inner side of the sliding lock cover, and two grooves are provided on the outer side of the connecting tube; or

[0026] The groove is located on the inner side of the sliding lock cover, and the two protrusions are located on the outer side of the connecting tube.

[0027] Optionally, a guide structure is further provided between the sliding lock cover and the connecting tube;

[0028] The guiding structure includes at least one guide bar and at least one guide groove that cooperate with each other;

[0029] Wherein, at least one guide strip is disposed on the inner side of the sliding lock cover, and at least one guide groove is disposed on the outer side of the connecting pipe; or

[0030] The at least one guide groove is disposed on the inner side of the sliding lock cover, and the at least one guide strip is disposed on the outer side of the connecting tube.

[0031] The connecting tube of this application may include a deformable tube, which allows the entire connecting tube to be bent and return to its original shape, facilitating cleaning in low-ceilinged areas. The connecting tube of this application has a simple structure, a clean appearance, small space occupation, is easy to use, and is low-cost. Compared to a direct corrugated pipe design, the deformable tube of this application, while being bendable, provides better support, sufficient rigidity, and is less prone to fatigue failure.

[0032] The deformable tube of this application can only be bent in one direction, which satisfies the requirements of easy recovery after bending and rigidity. At the same time, bending in more than one direction prevents the deformable tube from torsion deformation and is not prone to breakage and failure.

[0033] This application incorporates a sliding locking cap at the connecting pipe. By sliding the locking cap, the deformable pipe can be locked and unlocked. When locked, the deformable pipe cannot be bent or deformed, while when unlocked, it can be bent under external force. This allows users to adjust the position of the sliding locking cap according to their actual needs, satisfying multi-functional requirements without affecting the use of the entire connecting pipe, thereby improving the overall user experience of the cleaning device.

[0034] A locking assembly is provided between the connecting tube and the sliding cover in this application. When the sliding cover slides back and forth between the deformable tube and the upper tube, the locking assembly can fix the sliding cover in the locked and unlocked positions, preventing the sliding cover from sliding down directly due to gravity. When the interactive cover switches between the lower tube and the deformable tube, the locking assembly fixes the sliding cover in the locked and unlocked positions to fix the length of the entire connecting tube. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the cleaning device provided in one embodiment of this application.

[0036] Figure 2 This is a schematic diagram of the structure of the connecting pipe provided in one embodiment of this application.

[0037] Figure 3 This is a three-dimensional structural diagram of a deformable tube provided in one embodiment of this application.

[0038] Figure 4 A side view of a cleaning apparatus provided according to one embodiment of this application.

[0039] Figure 5 This is a schematic diagram of a connecting pipe bent in one direction according to one embodiment of this application.

[0040] Figure 6 This is a schematic diagram of a deformable tube bent in one direction according to one embodiment of this application.

[0041] Figure 7 This is a schematic diagram of a connecting pipe bent in another direction according to one embodiment of this application.

[0042] Figure 8 This is a schematic diagram of a deformable tube bent in another direction according to one embodiment of the present application.

[0043] Figure 9 This is a schematic diagram of the connecting tube and sliding lock cover provided in one embodiment of this application.

[0044] Figure 10 This is a schematic diagram of the sliding lock cover in the unlocked state according to one embodiment of this application.

[0045] Figure 11 This is a schematic diagram of a sliding lock cover in the unlocked state and the connecting tube bent in one direction, according to one embodiment of this application.

[0046] Figure 12 This is a schematic diagram of a sliding lock cover in the unlocked state and the connecting tube bent in another direction, according to one embodiment of this application.

[0047] Figure 13 This is a schematic diagram of the sliding cover in the locked state according to one embodiment of this application.

[0048] Figure 14 This is a schematic diagram of a cleaning device with a sliding locking cover in a locked state, according to one embodiment of this application.

[0049] Figure 15 This is a schematic diagram of a cleaning device provided in one embodiment of the present application, in which the sliding lock cover is in the unlocked state and the connecting tube is bent in one direction.

[0050] Figure 16 A schematic diagram of a cleaning device provided in another embodiment of this application, wherein the sliding lock cover is in the unlocked state and the lower tube of the connecting tube and the telescopic tube are extended.

[0051] Figure 17 A schematic diagram of a cleaning device provided in another embodiment of this application, wherein the sliding lock cover is in the unlocked state and the lower tube of the connecting tube and the telescopic tube are shortened.

[0052] Figure 18 A schematic diagram of a cleaning device with a sliding locking cover in a locked state, according to another embodiment of this application.

[0053] Figure 19 This is a schematic diagram of a cleaning device provided in another embodiment of the present application, wherein the sliding lock cover is in the unlocked state, the connecting tube is bent, and the sliding lock cover of the connecting tube and the lower tube are extended.

[0054] Figure 20 This is a schematic diagram of a cleaning device provided in another embodiment of the present application, wherein the sliding lock cover is in the unlocked state, the connecting tube is bent, and the sliding lock cover of the connecting tube and the lower tube are shortened.

[0055] Figure 21 This is a schematic diagram of the structure of a sliding lock cover provided in one embodiment of this application.

[0056] Figure 22 This is a schematic diagram of the structure of a sliding lock cover provided in another embodiment of this application.

[0057] Figure 23 This is a structural schematic diagram of the sliding lock cover from another angle, provided for another embodiment of this application.

[0058] Figure 24 This is a structural schematic diagram of the sliding lock cover from another angle, according to yet another embodiment of this application.

[0059] Figure 25 This is a schematic diagram of the structure of a sliding lock cover provided in another embodiment of this application.

[0060] Figure 26This is a schematic diagram of the structure of a sliding lock cover provided in another embodiment of this application.

[0061] Explanation of reference numerals in the attached figures

[0062] Cleaning device-100; connecting pipe-200; deformable pipe-210; support part-211; folding part-212; upper pipe-220; lower pipe-230; sliding lock cover-240; telescopic pipe-250; locking assembly-260; protrusion-261; groove-262; first through hole-271; second through hole-272; frame structure-273; guide structure-280; guide strip-281; ​​guide groove-282; handheld part-300; sweeping part-400. Detailed Implementation

[0063] To make the technical solution and beneficial effects of this application more apparent and understandable, a detailed description is provided below by listing specific embodiments. The accompanying drawings are not necessarily drawn to scale, and local features may be enlarged or reduced to more clearly show the details of the local features; unless otherwise defined, the technical and scientific terms used herein have the same meanings as those in the technical field to which this application pertains.

[0064] As a specific embodiment of this application, such as Figure 1 and Figure 2 As shown, this embodiment provides a connecting pipe 200 for a cleaning device 100. The cleaning device 100 in this embodiment can be a handheld vacuum cleaner or some other handheld cleaning device 100. Specifically, the connecting pipe 200 is used to connect the handheld part 300 and the cleaning part 400 of the cleaning device 100, and allows impurities cleaned at the cleaning part 400 to enter the handheld part 300 after passing through the connecting pipe 200.

[0065] As a specific embodiment of this application, such as Figures 2-8 As shown, the connecting pipe 200 of the cleaning device 100 in this embodiment may include a deformable pipe 210. The deformable pipe 210 has a bent state (e.g., Figure 5-8 (as shown) and the original state (as shown) Figure 2-4 As shown), the deformable tube 210 can be bent into a bent state when the external force it receives is greater than a preset value (as shown). Figure 5-8 (as shown), and when the external force value is less than or equal to the preset value, it can automatically restore to its original state (as shown). Figure 5-8 (As shown).

[0066] The connecting pipe 200 in this embodiment may include a deformable pipe 210, which allows the entire connecting pipe 200 to be bent and return to its original shape, facilitating cleaning in low-ceilinged environments. The connecting pipe 200 of this embodiment has a simple structure, a clean appearance, small space occupation, is easy to use, and has a low cost. Compared with a direct corrugated pipe design, the deformable pipe 210 of this application has good support, sufficient rigidity, and is not prone to fatigue failure when it is bendable.

[0067] As a specific embodiment of this application, the deformable tube 210 of this embodiment has a hardness of 50-90 HA. Specifically, the deformable tube 210 of this embodiment is a rubber-coated folded tube, and the hardness of the rubber-coated folded tube can be 50 HA, 60 HA, 70 HA, 80 HA, or 90 HA. The hardness of the deformable tube 210 within this range provides support and elasticity, ensuring that the deformable tube 210 can be bent and automatically recover its shape.

[0068] Specifically, in this embodiment, the bending angle γ of the deformable tube 210 is -50° to 50°. That is, this bend allows the entire connecting tube 200 to bend to both sides, for example, Figure 5 and Figure 6 To bend to the left in the diagram, Figure 7 and Figure 8 The curve bends to the right as shown in the diagram, with each bend angle being approximately 50 degrees.

[0069] As a specific embodiment of this application, the deformable tube 210 is symmetrical in a first preset direction Y. The deformable tube 210 is also symmetrical in a second preset direction Y; wherein the second preset direction Z is the direction in which the central axis of the deformable tube 210 extends, and the second preset direction Z is perpendicular to the first preset direction Y; the deformable tube 210 is asymmetrical in a third preset direction X, wherein the third preset direction X is perpendicular to the first preset direction Y and perpendicular to the second preset direction Z. The deformable tube 210 can rotate to a bent state around a pivot parallel to the first preset direction Y.

[0070] Specifically, in this embodiment, the second preset direction Z can be the axial direction of the deformable tube 210. The first preset direction Y can be any direction perpendicular to the second preset direction Z, and the third preset direction X is a direction perpendicular to both the first preset direction Y and the second preset direction Z. Generally, when a user uses the cleaning device 100 to clean, they want the deformable tube 210 to be bendable in the front-back direction; therefore, the second preset direction Z is the left-right direction, and the third preset direction X is the front-back direction.

[0071] The deformable tube 210 of this embodiment is symmetrical in the first preset direction Y and the second preset direction Z, but asymmetrical in the third preset direction X. Therefore, the deformable tube of this embodiment can be rotated and bent along the axis perpendicular to the third preset direction X.

[0072] The deformable tube 210 of this application can only be bent in one direction, which satisfies the requirements of easy recovery after bending and rigidity. At the same time, bending in more than one direction prevents the deformable tube 210 from torsion deformation and is not easy to break and fail.

[0073] As a specific embodiment of this application, the deformable tube 210 of this embodiment may include a support portion 211 and a folding portion 212. The support portion 211 extends along a second preset direction Z. The folding portion 212 is folded along the second preset direction Z, and the two ends of the folding portion 212 perpendicular to the second preset direction Z are connected to the support portion 211, with the middle portion located on one side of the support portion 211 in a third preset direction X, and forming a tubular shape with the support portion 211.

[0074] Specifically, the support portion 211 in this embodiment can be a single-layer structure or a double-layer structure. Preferably, the support portion 211 in this embodiment forms a double-layer structure, and the double-layer structure forms a tubular shape. The double-layer structure can increase the strength of the support portion 211, and make the angle range and force when bending forward and backward nearly equal, and together with the main channel, form a double channel.

[0075] In this embodiment, the folding part 212 is connected to the side of the support part 211, and the folding part 212 causes the deformable tube 210 to bend and deform by folding.

[0076] Specifically, the thickness of the bend in the folded portion 212 can be set to be greater than the thickness of other parts. Specifically, in the folded portion 212 of this embodiment, the bend is generally a full circle of bends. When the thickness of the bend is designed to be greater than the thickness of other parts, it can serve as a supporting frame to improve the supporting strength, and it can also prevent the folded portion 212 from being damaged due to excessive deformation at the bend during the bending process.

[0077] As one embodiment of this application, the connecting pipe 200 further includes an upper pipe 220 connected to one side of the deformable pipe 210 and a lower pipe 230 disposed on the other side of the deformable pipe 210.

[0078] Furthermore, in this embodiment, the wall thickness of the folding portion 212 is less than the wall thickness of the support portion 211, and the wall thickness of the folding portion 212 is less than the wall thickness of the upper tube and the lower tube 230.

[0079] Since the upper and lower ends of the folded portion 212 are connected to the upper tube 220 and the lower tube 230 respectively, the thickness of the upper and lower ends of the folded portion 212 is preferably the same as the wall thickness of the upper tube 220 and the lower tube 230. This makes the wall thickness of the upper and lower ends of the folded portion 212 in this embodiment greater than the wall thickness of other parts.

[0080] As a specific embodiment of this application, such as Figure 4 As shown, in this embodiment, in the direction from near the support portion 211 to away from the support portion 211, the two adjacent creases of the folded portion 212 are parallel to each other or form a radial fan shape or wing shape. Preferably, in this embodiment, the folded portion 212 is symmetrical vertically and the fold spacing is equal. The two uppermost creases and the two lowermost creases can be parallel to each other, while the two adjacent creases near the middle form a fan shape, and the included angle α between the two adjacent creases is the same, or the included angle α between the two adjacent creases gradually decreases from the middle to the upper and lower sides.

[0081] As a preferred embodiment, such as Figure 4 As shown, in this embodiment, the folding distance V of the folded portion 212 after being cut along the plane passing through the central axis is the same. Specifically, the folding distance refers to the distance between the sides of two adjacent folds bent in the same direction after being cut by the plane passing through the central axis. This is the distance indicated by V in the figure. In this embodiment, the vertical distance W of the support portion 211 is approximately 40mm, the outer diameter U of the entire folded portion 212 is approximately 36mm, and the maximum folding distance V is approximately 9mm. Of course, as different embodiments, the dimensions of the support portion 211, the outer diameter of the folded portion 212, and the maximum folding distance can be designed according to actual conditions, and no specific limitations are imposed here.

[0082] As a specific embodiment of this application, such as Figures 9-13 As shown, the connecting tube 200 in this embodiment may include a sliding locking cover 240, which is sleeved on the outside of the connecting tube 200 (e.g., Figures 10-13 As shown), and the sliding lock cover 240 slides to be sleeved outside the deformable tube 210 (as shown). Figure 13 (As shown) to prevent the deformable tube 210 from bending, and to allow the deformable tube 210 to bend when sliding away from it. Figures 10-12 As shown, at this point, the sliding lock cover 240 has moved away from the deformable tube 210 and is fitted onto the upper tube 220. At this time, the deformable tube 210 can be bent to the left (e.g., Figure 11 ) or bend to the right (such as Figure 12 ).

[0083] In this embodiment, a sliding locking cover 240 is provided at the connecting pipe 200. By sliding the sliding locking cover 240, the deformable pipe 210 can be locked and unlocked. When the deformable pipe 210 is locked, it cannot be bent or deformed, while when the deformable pipe 210 is unlocked, it can be bent under the action of external force. This allows the user to adjust the position of the sliding locking cover 240 according to actual needs, satisfying the needs of multiple functions without affecting the use of the entire connecting pipe 200, thereby improving the user experience of the entire cleaning device 100.

[0084] Specifically, the sliding lock cover 240 in this embodiment can be made of a transparent or semi-transparent material (such as PC or MABS), which can improve the user's visibility of the internal latch and the bent rubber-coated tube. Of course, other colors or materials are also possible. As another embodiment, in order to reduce the diameter difference between the sliding lock cover 240 and the connecting tube 200, a metal profile can also be used to further reduce the wall thickness and step difference.

[0085] Specifically, the lower end of the upper tube 220 is seamlessly connected to the deformable tube 210, the upper end of the upper tube 220 is connected to the handle 300 of the cleaning device 100, and the upper end of the lower tube 230 is seamlessly connected to the lower end of the deformable tube 210. Preferably, the upper tube 220, the deformable tube 210, and the lower tube 230 have the same cross-sectional structure and the same dimensions.

[0086] In this embodiment, the upper tube 220, deformable tube 210, and lower tube 230 all have circular cross-sections. The double-layer structure at the support portion 211 of the deformable tube 210 forms an elliptical shape, thereby making the entire cross-section of the deformable tube 210 a double-channel structure. Furthermore, the sliding lock cover 240 also has a circular cross-section. The upper tube 220 and lower tube 230 also have elliptical double-layer structures at positions corresponding to the double-layer structure of the deformable tube 210.

[0087] As one example, such as Figures 14-15 As shown, in this embodiment, the upper tube 220, deformable tube 210, and lower tube 230 form a connecting tube 200. A sliding locking cover 240 is fitted onto the deformable tube 210 and the upper tube 220, and slides between them. The sliding locking cover 240 has a locked position and an unlocked position relative to the connecting tube 200. Specifically, the sliding locking cover 240 is in the locked position when it is fitted outside the deformable tube 210, and in the unlocked position when it is fitted onto the upper tube 220. When the sliding locking cover 240 slides to the upper tube (i.e., the unlocked position), the deformable tube 210 can be bent under external force, allowing the connecting tube 200 of the cleaning device 100 to bend, thereby enabling the cleaning device 100 to clean lower areas.

[0088] As another embodiment, such as Figure 16 and Figure 17As shown, in this embodiment, the upper tube 220, deformable tube 210, and lower tube 230 form a connecting tube 200. A sliding locking cover 240 is fitted onto the deformable tube 210 and the upper tube 220, and slides between them. The sliding locking cover 240 has a locked position and an unlocked position relative to the connecting tube 200; wherein, the sliding locking cover 240 is in the locked position when it is fitted outside the deformable tube 210, and in the unlocked position when it is fitted onto the upper tube 220. Furthermore, a telescopic tube 250 that can extend and retract relative to the lower tube 230 is fitted onto the lower side of the lower tube 230. The lower side of the telescopic tube 250 is connected to the cleaning part 400, and the lower side of the lower tube 230 extends from the upper side of the telescopic tube 250 into the telescopic tube 250, allowing the entire connecting tube 200 to extend (e.g., ...). Figure 16 (as shown) and shortening (as shown) Figure 17 (As shown).

[0089] As another embodiment, such as Figures 18-20 As shown, in this embodiment, the upper end of the lower tube 230 is connected to the lower part of the deformable tube 210, and the lower part of the sliding locking cover 240 is connected to the cleaning part of the cleaning device 100. The lower tube 230 extends into the sliding locking cover 240 from above. Similarly, the sliding locking cover 240 has a locked position and an unlocked position relative to the connecting tube 200; wherein, the sliding locking cover 240 is in the locked position when it is sleeved on the deformable tube 210 (e.g., Figure 18 The unlocked position is when the sliding lock cover 240 is removed from the deformable tube 210 and only fitted onto the upper tube 220 (e.g., Figure 19 and Figure 20 (As shown). In the unlocked position, the connecting tube 200 is deformable and bendable at the deformable tube 210. Furthermore, the sliding lock cover 240 and the lower tube 230 can extend relative to each other, thereby allowing the entire connecting tube 200 to lengthen (as shown). Figure 19 (as shown) and shortening (as shown) Figure 20 (As shown).

[0090] In this embodiment, the sliding lock cover 240 not only prevents the deformable tube 210 from deforming, but also allows the connecting tube 200 to extend and retract.

[0091] Specifically, the sliding lock cover 240 in this embodiment needs to be manually changed so that it can move between the locked position and the unlocked position. Therefore, in order to prevent the hand from slipping when holding the sliding lock cover 240, anti-slip textures can be added to the surface of the sliding lock cover 240, or it can be coated with rubber, or raised structures can be made at the top and bottom ends.

[0092] As a specific embodiment of this application, a latch assembly 260 is provided between the sliding lock cover 240 and the connecting tube 200, so that the sliding lock cover 240 is engaged in both the locked and unlocked positions to prevent the sliding lock cover 240 from sliding relative to the connecting tube 200.

[0093] Specifically, when the sliding cover 240 slides back and forth between the deformable tube 210 and the upper tube 220, the locking assembly 260 can fix the sliding cover 240 in the locked and unlocked positions, preventing the sliding cover 240 from sliding down directly due to gravity. When the interactive cover switches between the lower tube 230 and the deformable tube 210, the locking assembly 260 fixes the sliding cover 240 in the locked and unlocked positions to fix the length of the entire connecting tube 200.

[0094] As one embodiment, the locking assembly 260 of this embodiment may include a protrusion 261 (e.g., a small protrusion 261) disposed on the inner side of the sliding lock cover 240. Figure 21 , Figure 22 , Figure 25 and Figure 26 (as shown) and two grooves 262 provided on the outside of the connecting pipe 200 (as shown) Figure 9 (As shown).

[0095] As another specific embodiment (not shown in the figure), the locking assembly 260 of this embodiment may include a groove disposed inside the sliding lock cover 240 and two protrusions disposed outside the connecting tube 200.

[0096] The following explanation will take the sliding lock cover 240 as an independent component, which slides at the deformable tube 210 and the upper tube 220 as an example.

[0097] More specifically, the latch in this embodiment includes a protrusion 261 on the inner side of the sliding lock cover 240 and two grooves 262 provided at the upper tube 220.

[0098] In this embodiment, the protrusion 261 and the groove 262 are structurally matched. When the sliding cover 240 slides to the position where the protrusion 261 and the groove 262 match, the protrusion 261 engages with the groove 262. When it is necessary to move the sliding cover 240, a certain force is required to overcome the mutual engaging force between the protrusion 261 and the groove 262, thereby causing the protrusion 261 to disengage from the groove 262.

[0099] In this embodiment, a groove 262 is provided on the side wall of the upper tube 220 near the upper side, and another groove 262 is provided near the lower side. When the protrusion 261 of the sliding lock cover 240 engages with the upper groove 262, the sliding lock cover 240 is in the unlocked state (e.g., Figure 10 As shown), when the protrusion 261 of the sliding lock cover 240 engages with the groove 262 on the lower side, the sliding lock cover 240 is in a locked state (as shown). Figure 13 As shown in the figure, the sliding lock cover 240 is fitted over the deformable tube 210.

[0100] Specifically, in this embodiment, a 0.1-0.2mm clearance is reserved on one side between the inner wall of the sliding lock cover 240 and the outer walls of the upper tube 220 and the deformable tube 210. The engagement amount of the locking assembly 260 is preferably 0.5-1mm to ensure both smooth sliding and reliable engagement and limiting.

[0101] In one embodiment, the protrusion 261 of this embodiment can be formed by directly protruding inward from the inner side of the sliding lock cover 240 (e.g.) Figure 21-23 , Figure 25 , Figure 16 As shown), it can also be formed by the entire side wall of the sliding lock cover 240 protruding inward (as shown). Figure 24 (As shown). The design can be selected based on wall thickness and process adjustments.

[0102] Specifically, in this embodiment, the side of the protrusion 261 has a hollow structure (e.g., Figures 22-26 (As shown).

[0103] As one embodiment, (e.g.) Figures 22-24 As shown, the protrusion 261 in this embodiment is provided on the sliding lock cover 240, and the first through hole 271 is designed on both sides of the protrusion 261, so that the protrusion 261 and the first through hole 271 form an H-shaped structure.

[0104] As another embodiment, such as Figure 25 As shown, in this embodiment, the protrusion 261 is provided on the sliding lock cover 240, and the second through hole 272 is designed on both sides of the protrusion 261. The protrusion 261 and the second through hole 272 form an H-shaped structure, and the second through hole 272 extends to the end of the sliding lock cover 240.

[0105] As yet another example, such as Figure 26 As shown, in this embodiment, the protrusion 261 is provided on the sliding lock cover 240, and an unsealed frame structure 273 is provided on the side of the protrusion 261.

[0106] The hollow structure on the side of the protrusion 261 can make the protrusion 261 have a certain elasticity, which makes it easier for the protrusion 261 to engage or disengage with the groove 262.

[0107] As a specific embodiment of this application, such as Figure 9 As shown, in this embodiment, a guide structure 280 is also provided between the sliding lock cover 240 and the connecting pipe 200. The guide structure 280 includes at least one guide strip and at least one guide groove that cooperate with each other.

[0108] In one embodiment, at least one guide bar 281 is disposed on the inner side of the sliding lock cover 240 (e.g., Figures 21-26As shown), at least one guide groove 282 is provided on the outside of the connecting pipe 200 (e.g. Figure 9 (As shown).

[0109] In another embodiment, (not shown in the figure) at least one guide groove is provided inside the sliding lock cover 240, and at least one guide strip is provided outside the connecting tube 200.

[0110] In one specific embodiment, the guide structure 280 may include three guide bars 281 disposed inside the sliding lock cover 240 and three guide grooves 282 disposed outside the connecting tube 200. The three guide bars 281 and the three guide grooves 282 are arranged in a one-to-one correspondence and all extend along the direction of extension of the connecting tube 200.

[0111] In other embodiments, the number of guide grooves and guide strips in this embodiment is not limited to three. Any number of other guide grooves that can ensure that the sliding lock cover 240 can slide up and down relative to the connecting tube 200 is acceptable. The position of some guide grooves is preferably set at the connection between the connecting part and the folding part 212.

[0112] Specifically, in this embodiment, the guide strip 281 on the inner side of the sliding lock cover 240 can be designed to protrude directly inward from the inner side of the sliding lock cover 240 (not shown in the figure), or it can be designed to have the side wall of the sliding lock cover 240 recessed inward to form an outer side wall recessed and the inner side wall protruding inward (e.g. Figures 21-26 (As shown).

[0113] In this application, unless otherwise expressly defined, the terms "above," "on top of," "over," "above," "below," "below," "below," or "below" for "first feature over second feature" can refer to the first and second features being in direct contact, or to the first and second features being in indirect contact through an intermediate medium. Furthermore, "above," "over," and "below" for "first feature over second feature" can mean the first feature is directly above or diagonally above the second feature, or simply indicates that the horizontal height of the first feature is higher than the horizontal height of the second feature. Similarly, "below," "below," and "below" for "first feature over second feature" can mean the first feature is directly below or diagonally below the second feature, or simply indicates that the horizontal height of the first feature is lower than the horizontal height of the second feature.

[0114] It should be understood that the above embodiments are exemplary and are not intended to encompass all possible implementations included in the claims. Various modifications and changes can be made to the above embodiments without departing from the scope of this disclosure. Similarly, the various technical features of the above embodiments can be arbitrarily combined to form other embodiments of this application that may not be explicitly described. Therefore, the above embodiments only illustrate several implementations of this application and do not limit the scope of protection of this patent application.

Claims

1. A connecting pipe for a cleaning device, the connecting pipe being used to connect a handheld part and a cleaning part of the cleaning device, and allowing impurities cleaned at the cleaning part to enter the handheld part after passing through the connecting pipe; characterized in that, The connecting pipe includes a deformable pipe; The deformable tube has a bent state and an original state. When the external force applied to it is greater than a preset value, the deformable tube can be bent into the bent state, and when the external force is less than or equal to the preset value, it can automatically return to the original state.

2. The connecting pipe of the cleaning device according to claim 1, characterized in that, The hardness of the deformable tube is 50-90HA; The bending angle of the deformable tube is -50° to 50°.

3. The connecting pipe of the cleaning device according to claim 1, characterized in that, The deformable tube is symmetrical in a first preset direction; The deformable tube is symmetrical in a second preset direction; wherein, the second preset direction is the direction in which the central axis of the deformable tube extends, and the second preset direction is perpendicular to the first preset direction; and The deformable tube is asymmetrical in a third preset direction, wherein the third preset direction is perpendicular to the first preset direction and the third preset direction is perpendicular to the second preset direction; The deformable tube can rotate around an axis parallel to the first preset direction to the bent state.

4. The connecting pipe of the cleaning device according to any one of claims 1-3, characterized in that, The deformable tube includes: A support portion extending along a second predetermined direction, wherein the second predetermined direction is the direction in which the central axis of the deformable tube extends; and The folding part is folded in the second preset direction, and the two ends of the folding part are connected to the support part at the two ends perpendicular to the second preset direction. The middle part is located on one side of the support part in the third preset direction and is formed into a tube with the support part, wherein the third preset direction is perpendicular to the second preset direction.

5. The connecting pipe of the cleaning device according to claim 4, characterized in that, The wall thickness of the folded portion is less than the wall thickness at the support portion; and / or The wall thickness at the bend of the folded portion is greater than the wall thickness at other parts of the folded portion.

6. The connecting pipe of the cleaning device according to claim 4, characterized in that, The folded portion has two adjacent folds that are parallel to each other or form a radial fan shape or wing shape in the direction from the support portion to the distance from the support portion. The folded portions have the same folding distance after being cut along the plane passing through the central axis.

7. The connecting pipe of the cleaning device according to claim 1, characterized in that, It also includes a sliding locking cover, which is sleeved on the outside of the connecting tube and prevents the deformable tube from bending when the sliding locking cover slides to the outside of the deformable tube, and allows the deformable tube to bend when it slides away from the deformable tube.

8. The connecting pipe of the cleaning device according to claim 7, characterized in that, The connecting pipe also includes an upper pipe connected to one side of the deformable pipe and a lower pipe disposed on the other side of the deformable pipe; The sliding lock cover has a locked position and an unlocked position relative to the connecting tube; wherein, the sliding lock cover is in the locked position when it is sleeved on the deformable tube, and in the unlocked position when it is sleeved on the upper tube or the lower tube. A locking assembly is provided between the sliding cover and the connecting tube, so that the sliding cover is engaged in both the locked and unlocked positions to prevent the sliding cover from sliding relative to the connecting tube.

9. The connecting pipe of the cleaning device according to claim 8, characterized in that, The locking assembly includes: A protrusion is provided on the inner side of the sliding lock cover, and two grooves are provided on the outer side of the connecting tube; or The groove is located on the inner side of the sliding lock cover, and the two protrusions are located on the outer side of the connecting tube.

10. The connecting pipe of the cleaning device according to claim 7, characterized in that, A guide structure is also provided between the sliding lock cover and the connecting pipe; The guiding structure includes at least one guide bar and at least one guide groove that cooperate with each other; Wherein, at least one guide strip is disposed on the inner side of the sliding lock cover, and at least one guide groove is disposed on the outer side of the connecting pipe; or The at least one guide groove is disposed on the inner side of the sliding lock cover, and the at least one guide strip is disposed on the outer side of the connecting tube.

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