Bending rod and cleaning device
By employing an angle adjustment mechanism with a first and second transmission component rolling relative to each other in the bent rod, the problem of pin stress concentration was solved, thus improving the reliability of the bent rod.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU MIDEA CLEANING APPLIANCES
- Filing Date
- 2025-07-29
- Publication Date
- 2026-07-24
Smart Images
Figure CN224540110U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of cleaning equipment technology, specifically to a bending rod and cleaning equipment. Background Technology
[0002] In related technologies, the bending rod includes a first segment and a second segment, which are hinged together by a pin. The bending angle of the bending rod is adjusted by using a pin pivot design. During the adjustment of the bending angle of the bending rod, the bending torque is borne independently by the pin, which can easily cause stress concentration, resulting in deformation or breakage of the pin and affecting the reliability of the bending rod. Utility Model Content
[0003] In view of the above problems, this application provides a bending rod and a cleaning device, which can reduce mechanical stress, reduce stress concentration, and improve the reliability of the bending rod during the adjustment of the bending angle of the bending rod.
[0004] To solve the above-mentioned technical problems, the technical solution adopted in this application is conceived as follows: In a first aspect, this application provides a bending rod, which includes: a first rod segment; a second rod segment; a flexible hose connected between the first rod segment and the second rod segment, wherein the first rod segment, the flexible hose, and the second rod segment form a communicating flow channel; and an angle adjustment mechanism, including a first transmission member disposed at one end of the first rod segment near the second rod segment and a second transmission member disposed at one end of the second rod segment near the first rod segment, wherein the first transmission member and the second transmission member are in contact and rolled relative to each other, and the first transmission member and the second transmission member are used to rotate in opposite directions to adjust the angle between the first rod segment and the second rod segment.
[0005] The first transmission component includes a first rotating shaft and a first transmission wheel set. The first rotating shaft is located on the first rod segment, and the first transmission wheel set is sleeved on the outside of the first rotating shaft. The second transmission component includes a second rotating shaft and a second transmission wheel set. The second rotating shaft is located on the second rod segment, and the second transmission wheel set is sleeved on the outside of the second rotating shaft and is in contact with the first transmission wheel set and is arranged to roll relative to it.
[0006] One end of the hose is inserted into the first rod segment, and the other end of the hose is inserted into the second rod segment. The axial direction of the first rotating shaft intersects with the axial direction of the first rod segment. A portion of the first rotating shaft is located on the side of the first rod segment facing the hose and is in contact with or spaced from the hose, or is inserted into the hose. The other portion is located on the side of the first rod segment away from the hose and is connected to the first transmission wheel set. The axial direction of the second rotating shaft intersects with the axial direction of the second rod segment. A portion of the second rotating shaft is located between the second rod segment and the hose and is in contact with or spaced from the hose, or is inserted into the hose. The other portion is located on the side of the second rod segment away from the hose and is connected to the second transmission wheel set.
[0007] The first rod segment has a first recess on the side facing away from the hose, which is used to accommodate the first transmission wheel set; the second rod segment has a second recess on the side facing away from the hose, which is used to accommodate the second transmission wheel set.
[0008] The first rod segment has multiple first recesses arranged at intervals along its circumference on its inner side. The first transmission wheel set includes multiple first transmission wheels, which are correspondingly disposed in the multiple first recesses. Each first transmission wheel has a first engagement portion arranged along its circumference. The second rod segment has multiple second recesses arranged at intervals along its circumference on its inner side. The second transmission wheel set includes multiple second transmission wheels, which are correspondingly disposed in the multiple second recesses. Each second transmission wheel has a second engagement portion arranged along its circumference. The first engagement portion and the second engagement portion are engaged.
[0009] The first meshing part includes a first arc-shaped rack; the second meshing part includes a second arc-shaped rack.
[0010] The first rotating shaft includes multiple first sub-shafts arranged coaxially, and multiple first transmission wheels are correspondingly sleeved on the multiple first sub-shafts; the second rotating shaft includes multiple second sub-shafts arranged coaxially, and multiple second transmission wheels are correspondingly sleeved on the multiple second sub-shafts.
[0011] The diameter of the first drive wheel is different from that of the second drive wheel.
[0012] The bending rod also includes a first locking mechanism, which can unlockably connect the first rod segment and the second rod segment, and is arranged opposite to the angle adjustment mechanism along the radial direction of the bending rod.
[0013] The first rod segment and the second rod segment are provided with a locking groove; the first locking mechanism includes an operating member, the middle part of which is rotatably disposed on the other of the first rod segment and the second rod segment, and one end of the operating member is provided with a locking part; when the bent rod is in a non-bent state, the locking part is engaged in the locking groove, and when the bent rod is in a bent state, the locking part is disengaged from the locking groove.
[0014] The first locking mechanism further includes a reset member, which is connected between the first rod segment and the second rod segment and the operating member, and is used to provide a supporting force towards the locking groove for the locking part.
[0015] The first rod segment includes a first connector and a first rigid tube, with one end of the first connector sleeved outside the flexible hose and the other end sleeved outside the first rigid tube; the second rod segment includes a second connector and a second rigid tube, with one end of the second connector sleeved outside the flexible hose and the other end sleeved outside the second rigid tube; the first transmission component is located on the side of the first connector away from the first rigid tube, and the second transmission component is located on the side of the second connector away from the second rigid tube.
[0016] The first connector has a first circuit channel inside the side or sidewall facing the hose, and the second connector has a second circuit channel inside the side or sidewall facing the hose that communicates with the first circuit channel. The first and second circuit channels are located close to the angle adjustment mechanism. The end of one of the first and second connectors away from the angle adjustment mechanism has a third circuit channel inside the side or sidewall facing the hose. The third circuit channel communicates with one of the first and second circuit channels. The bending rod also includes: a power connector located in the third circuit channel; and a conductive element, one end of which is connected to the power connector and the other end of which extends into the first and second circuit channels.
[0017] The bending rod also includes a cover, which is used to cover the first and second recesses when the bending rod is in the non-bent state, so as to cover the first and second drive wheels.
[0018] Secondly, this application provides a cleaning device, which includes: the aforementioned bending rod; a handheld part connected to one end of the bending rod; and a cleaning component connected to the other end of the bending rod.
[0019] The advantages of the embodiments of this application, which differ from the prior art, are as follows: This application provides a bending rod and a cleaning device. The bending rod includes a first rod segment, a second rod segment, a hose, and an angle adjustment mechanism. The hose is connected between the first rod segment and the second rod segment, and a connected flow channel is formed in the first rod segment, the hose, and the second rod segment. The angle adjustment mechanism includes a first transmission member disposed at one end of the first rod segment near the second rod segment and a second transmission member disposed at one end of the second rod segment near the first rod segment. The first transmission member and the second transmission member are in contact and rolled relative to each other. The first transmission member and the second transmission member are used to rotate in opposite directions to adjust the angle between the first rod segment and the second rod segment. By placing the first transmission component at the end of the first rod segment near the second rod segment, and placing the second transmission component at the end of the second rod segment near the first rod segment, and arranging the first and second transmission components in contact and rolling relative to each other, the angle between the first and second rod segments can be adjusted when the first and second transmission components rotate in opposite directions. This allows for adjustment of the bending angle of the bent rod. During the adjustment of the bending angle, the first and second transmission components share the rotation angle, reducing the required rotation angle for each component. This not only reduces the bending moment that each component needs to bear but also reduces the mechanical stress during rotation, minimizing stress concentration. Consequently, it reduces the risk of deformation or breakage of the first and second transmission components due to fatigue, thereby improving the reliability of the bent rod. Attached Figure Description
[0020] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:
[0021] Figure 1 This is a schematic diagram of the structure of an embodiment of the bent rod provided in this application;
[0022] Figure 2 yes Figure 1 A structural schematic diagram of the bent rod from another perspective;
[0023] Figure 3 yes Figure 1 A schematic diagram of the structure after the bent rod is hidden under the cover;
[0024] Figure 4 yes Figure 1 The diagram shows a cross-sectional view of the bent rod. Detailed Implementation
[0025] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. It is understood that the specific embodiments described herein are only for explaining this application and not for limiting it. Furthermore, it should be noted that, for ease of description, only the parts related to this application are shown in the accompanying drawings, not all structures. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.
[0026] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, 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, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.
[0027] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" 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, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0028] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0029] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.
[0030] Please see Figures 1 to 4 , Figure 1 This is a schematic diagram of the structure of an embodiment of the bent rod provided in this application; Figure 2 yes Figure 1 A structural schematic diagram of the bent rod from another perspective; Figure 3 yes Figure 1 A schematic diagram of the structure after the bent rod is hidden under the cover; Figure 4 yes Figure 1The diagram shows a cross-sectional view of a bent rod. This application provides a bent rod 100. The bent rod 100 includes a first rod segment 10, a second rod segment 20, a flexible hose 30, and an angle adjustment mechanism 40. The flexible hose 30 connects the first rod segment 10 and the second rod segment 20, and a communicating flow channel 100a is formed within the first rod segment 10, the flexible hose 30, and the second rod segment 20. The angle adjustment mechanism 40 includes a first transmission member 41 located at one end of the first rod segment 10 near the second rod segment 20, and a second transmission member 42 located at one end of the second rod segment 20 near the first rod segment 10. The first transmission member 41 and the second transmission member 42 are in contact and roll relative to each other, and are used to rotate in opposite directions to adjust the angle between the first rod segment 10 and the second rod segment 20.
[0031] The bending rod 100 can be used in cleaning equipment (not shown), specifically connecting the handle and cleaning components of the cleaning equipment. The bending angle of the bending rod 100 is adjustable, allowing the user to adjust it as needed to accommodate different cleaning areas such as crevices, under sofas, and under beds, reducing the frequency of bending over when using the cleaning equipment. The cleaning equipment can be a handheld vacuum cleaner, a handheld mop, or a handheld vacuum-mop combo, but is not limited to these. The cleaning components can be a nozzle, a mop, or a floor brush, but are not limited to these, and are compatible with the cleaning equipment. In other embodiments, the bending rod 100 can also be applied to other devices or equipment requiring pipe angle adjustment. For example, the bending rod 100 can be used in a washing machine as a water inlet or drain pipe; it can also be used in a refill nozzle as an oil delivery pipe; it can also be used as a protective sheath for cables or optical cables, but is not limited to these. This application describes the use of the bending rod 100 in a cleaning equipment as an example.
[0032] The main structure of the bending rod 100 consists of a first rod segment 10, a second rod segment 20, and a flexible hose 30 connecting the two. These three segments form a connected flow channel 100a, which serves as the transmission path for the working fluid in the bending rod 100. One end of the flexible hose 30 can be connected to the first rod segment 10; alternatively, one end of the flexible hose 30 can be inserted into the first rod segment 10. The other end of the flexible hose 30 can be connected to the second rod segment 20; alternatively, the other end of the flexible hose 30 can be inserted into the second rod segment 20.
[0033] The bending angle adjustment function of the bending rod 100 is achieved by the first transmission member 41 provided on the first rod segment 10 and the second transmission member 42 provided on the second rod segment 20 contacting and rolling relative to each other, and causing them to rotate in opposite directions. Here, the contacting and rolling relative arrangement can be an engaging arrangement, achieved by meshing teeth on the first transmission member 41 and the second transmission member 42; the reverse rotation means that when one of the first transmission member 41 and the second transmission member 42 rotates counterclockwise, the other rotates clockwise.
[0034] For ease of description, the position of the angle adjustment mechanism 40 is defined as the inner side of the bending rod 100, and the side opposite to the angle adjustment mechanism 40 along the radial direction of the bending rod 100 is defined as the outer side of the bending rod 100. In some embodiments, when the first transmission member 41 rotates counterclockwise and the second transmission member 42 rotates clockwise, the angle between the inner side of the first rod segment 10 and the inner side of the second rod segment 20 decreases, and the outer sides of the ends of the first rod segment 10 and the second rod segment 20 that are close to each other move away from each other. The outer side of the hose 30 can extend and bend to adapt to the angle change between the first rod segment 10 and the second rod segment 20. When the first transmission member 41 rotates clockwise and the second transmission member 42 rotates counterclockwise, the angle between the inner side of the first rod segment 10 and the inner side of the second rod segment 20 increases, and the outer sides of the ends of the first rod segment 10 and the second rod segment 20 that are close to each other move closer to each other. The outer side of the hose 30 can bend back and retract to avoid the outer side of the hose 30 being damaged by the first rod segment 10 and the second rod segment 20.
[0035] During the adjustment of the bending angle of the bending rod 100, the first transmission member 41 and the second transmission member 42 can share the rotation angle. In some embodiments, if the bending angle of the bending rod 100 is 90°, the first transmission member 41 and the second transmission member 42 only need to rotate 45° each; if the total rotation angle is 60°, the first transmission member 41 and the second transmission member 42 only need to rotate 30° each. The above embodiment is only one embodiment of this application. The specific rotation angle of the first transmission member 41 and the second transmission member 42 can be achieved as needed by adjusting their transmission ratio. Compared with a single pin pivot structure, the rotation angle and bending torque of a single transmission member in the embodiment of this application can be reduced.
[0036] By placing the first transmission member 41 at the end of the first rod segment 10 near the second rod segment 20, and placing the second transmission member 42 at the end of the second rod segment 20 near the first rod segment 10, and by arranging the first transmission member 41 and the second transmission member 42 in contact and rolling relative to each other, the angle between the first rod segment 10 and the second rod segment 20 can be adjusted when the first transmission member 41 and the second transmission member 42 rotate in opposite directions. This allows for adjustment of the bending angle of the bending rod 100. During the adjustment of the bending angle of the bending rod 100, the first transmission member 41 and the second transmission member 42 can share the rotation angle, thereby reducing the required rotation angle of each of the first transmission member 41 and the second transmission member 42. This not only reduces the bending moment that each of the first transmission member 41 and the second transmission member 42 needs to bear, but also reduces the mechanical stress during the rotation of the first transmission member 41 and the second transmission member 42, reducing stress concentration. This reduces the risk of deformation or breakage of the first transmission member 41 and the second transmission member 42 due to fatigue, thereby improving the reliability of the bending rod 100.
[0037] Furthermore, by using the first transmission member 41 and the second transmission member 42 as the pivot axis of the first rod segment 10 and the second rod segment 20, the turning radius of the pivot can be increased, the possibility of the hose 30 being excessively bent can be reduced, and the risk of the inner side of the hose 30 being excessively squeezed when bent can be reduced.
[0038] In some embodiments, please continue reading Figures 3 to 4 The first transmission component 41 includes a first rotating shaft 411 and a first transmission wheel set 412. The first rotating shaft 411 is located on the first rod segment 10, and the first transmission wheel set 412 is sleeved on the outside of the first rotating shaft 411. The second transmission component 42 includes a second rotating shaft 421 and a second transmission wheel set 422. The second rotating shaft 421 is located on the second rod segment 20, and the second transmission wheel set 422 is sleeved on the outside of the second rotating shaft 421, and is in contact with the first transmission wheel set 412 and is arranged to roll relative to it.
[0039] The first rotating shaft 411 and the second rotating shaft 421 are spaced apart and are parallel to each other, so that the axial direction of the first transmission wheel set 412 is parallel to the axial direction of the second transmission wheel set 422. This allows the contact surfaces between the first transmission wheel set 412 and the second transmission wheel set 422 to make uniform and continuous contact and transmit bending torque, which can not only reduce mechanical stress, but also reduce the risk of contact surface wear.
[0040] The first rotating shaft 411 and the second rotating shaft 421 can be at the same horizontal height. When the bent rod 100 is in a non-bent state, the plane formed between the axes of the first rotating shaft 411 and the second rotating shaft 421 is parallel to the axis of the hose 30. Alternatively, the first rotating shaft 411 and the second rotating shaft 421 can be at different horizontal heights. The horizontal height of the first rotating shaft 411 can be higher or lower than the horizontal height of the second rotating shaft 421. The plane formed between the axes of the first rotating shaft 411 and the second rotating shaft 421 forms an angle with the axis of the hose 30. The direction of the horizontal height is parallel to the arrangement direction of the inner and outer sides of the bent rod 100.
[0041] The first rotating shaft 411 can be fixed on the first rod segment 10, and the second rotating shaft 421 is fixed on the second rod segment 20. The first transmission wheel set 412 is sleeved on the outside of the first rotating shaft 411 and can rotate around the circumference of the first rotating shaft 411. The second transmission wheel set 422 is sleeved on the outside of the second rotating shaft 421 and can rotate around the circumference of the second rotating shaft 421. During the adjustment of the bending angle of the bending rod 100, the first transmission wheel set 412 and the second transmission wheel set 422 are in contact and roll relative to each other. The first transmission wheel set 412 can rotate relative to the first rotating shaft 411, and the second transmission wheel set 422 can rotate relative to the second rotating shaft 421. The first rotating shaft 411 and the second rotating shaft 421 remain relatively stationary relative to the first rod segment 10 and the second rod segment 20, respectively. Of course, the first rotating shaft 411 can also be rotatably mounted on the first rod segment 10, and the second rotating shaft 421 can also be rotatably mounted on the second rod segment 20. The first transmission wheel set 412 is fixed outside the first rotating shaft 411, and the second transmission wheel set 422 is fixed outside the second rotating shaft 421. During the adjustment of the bending angle of the bending rod 100, the first transmission wheel set 412 and the second transmission wheel set 422 are in contact and roll relative to each other. The first rotating shaft 411 and the first transmission wheel 4121 can rotate relative to the first rod segment 10, and the second rotating shaft 421 and the second transmission wheel 4221 can rotate relative to the second rod segment 20. The first rotating shaft 411 and the first transmission wheel set 412, as well as the second rotating shaft 421 and the second transmission wheel set 422, can be fixed by interference fit, key connection, or snap-fit structure, but are not limited to these.
[0042] By sleeved the first transmission wheel set 412 and the second transmission wheel set 422 on the outside of the first rotating shaft 411 and the second rotating shaft 421 respectively, and with the first transmission wheel set 412 and the second transmission wheel set 422 in contact and rolling relative to each other, the rotation angle can be distributed to the two rotating shafts and / or the two transmission wheel sets during the adjustment of the bending angle of the bending rod 100. This reduces the rotation angle of a single transmission component, thereby reducing the bending torque that a single transmission component needs to bear and reducing the risk of fatigue damage to the transmission component.
[0043] In some embodiments, one end of the hose 30 is inserted into the first rod segment 10 and the other end of the hose 30 is inserted into the second rod segment 20. This not only improves the connection strength between the hose 30 and the first rod segment 10 and between the hose 30 and the second rod segment 20, but also facilitates the installation of the angle adjustment mechanism 40, making the structure of the bending rod 100 more compact.
[0044] Please continue reading. Figures 3 to 4 The axial direction of the first rotating shaft 411 intersects the axial direction of the first rod segment 10. For example, the axial direction of the first rotating shaft 411 can be perpendicular to the axial direction of the first rod segment 10. A portion of the first rotating shaft 411 is located on the side of the first rod segment 10 facing the hose 30 and abuts against or is spaced from the hose 30, or passes through the hose 30. Another portion is located on the side of the first rod segment 10 away from the hose 30 and is connected to the first transmission wheel set 412. Specifically, a portion of the first rotating shaft 411 is located between the hose 30 and the first rod segment 10, and abuts against or is spaced from the hose 30; or this portion can also pass through the hose 30, with proper sealing measures to prevent fluid leakage in the flow channel 100a; another portion of the first rotating shaft 411 is exposed outside the first rod segment 10, wherein the other portion of the first rotating shaft 411 can be the middle and / or both ends of the first rotating shaft 411, for mounting the first transmission wheel set 412.
[0045] The axial direction of the second rotating shaft 421 intersects with the axial direction of the second rod segment 20. For example, the axial direction of the second rotating shaft 421 may be the same as that of the second rod segment 20. A portion of the second rotating shaft 421 is located between the second rod segment 20 and the hose 30, abutting against or spaced from the hose 30, or passing through the hose 30. Another portion is located on the side of the second rod segment 20 facing away from the hose 30 and is connected to the second transmission wheel set 422. Specifically, a portion of the second rotating shaft 421 is located between the hose 30 and the second rod segment 20, abutting against or spaced from the hose 30; or this portion may also pass through the hose 30, with proper sealing measures to prevent fluid leakage in the flow channel 100a. Another portion of the second rotating shaft 421 is exposed outside the second rod segment 20. This other portion of the second rotating shaft 421 may be the middle and / or both ends of the second rotating shaft 421, used for mounting the second transmission wheel set 422.
[0046] By placing a portion of the first rotating shaft 411 on the side of the first rod segment 10 facing the hose 30 and abutting or spaced from the hose 30, or passing through the hose 30, and placing a portion of the second rotating shaft 421 between the second rod segment 20 and the hose 30 and abutting or spaced from the hose 30, or passing through the hose 30, the space occupied by the angle adjustment mechanism 40 on the inner side of the bending rod 100 can be reduced. This makes the layout of the angle adjustment mechanism 40, the first rod segment 10, and the second rod segment 20 more compact, thereby increasing the bending angle of the bending rod 100 when bending inward and expanding the bending range of the bending rod 100. This not only makes the design of the bending rod 100 easier to meet the user's angle adjustment needs to adapt to different users and cleaning areas, but also reduces the volume of the bending rod 100 after bending, making it easier to carry and store, and helping to improve the user experience.
[0047] In some embodiments, please continue reading Figure 3 The first rod segment 10 has a first recess 10a formed on the side facing away from the hose 30. The first recess 10a is used to accommodate the first transmission wheel set 412. The second rod segment 20 has a second recess 20a formed on the side facing away from the hose 30. The second recess 20a is used to accommodate the second transmission wheel set 422.
[0048] The first recess 10a and the second recess 20a are connected so that the first transmission wheel set 412 and the second transmission wheel set 422 can contact each other and roll relative to each other.
[0049] By placing the first transmission wheel set 412 and the second transmission wheel set 422 in the first recess 10a and the second recess 20a respectively, on the one hand, the space occupied by the first transmission wheel set 412 and the second transmission wheel set 422 in the inner space of the bending rod 100 can be further reduced, which helps to expand the bending range of the bending rod 100; on the other hand, the first recess 10a and the second recess 20a form a partial covering of the first transmission wheel set 412 and the second transmission wheel set 422 respectively, which can improve the safety and stability of the rotation of the transmission wheel set, and also reduce the vibration and noise generated during the rotation.
[0050] In some embodiments, the shapes of the first recess 10a and the second recess 20a are adapted to the outer contours of the first transmission wheel assembly 412 and the second transmission wheel assembly 422, respectively. The inner walls of the first recess 10a and the second recess 20a can be designed to have a smooth structure, which can reduce the interference between the first recess 10a and the first transmission wheel assembly 412 and between the second recess 20a and the second transmission wheel assembly 422, so that the first transmission wheel assembly 412 and the second transmission wheel assembly 422 can rotate continuously and smoothly. The area of the first rod segment 10 facing the hose 30 and corresponding to the first recess 10a and the area of the second rod segment 20 facing the hose 30 and corresponding to the second recess 20a can be provided with reinforcing ribs, thereby improving the structural strength of the inner walls of the first recess 10a and the second recess 20a, and reducing the risk of the inner walls of the recesses cracking due to interference during the installation and disassembly of the first transmission wheel assembly 412 and the second transmission wheel assembly 422.
[0051] In some embodiments, a plurality of first recesses 10a are formed on the inner side of the first rod segment 10 at intervals along its circumference. The first transmission wheel assembly 412 includes a plurality of first transmission wheels 4121, which are correspondingly disposed in the plurality of first recesses 10a. The first transmission wheels 4121 are provided with a first engagement portion 4121a arranged circumferentially thereon. A plurality of second recesses 20a are formed on the inner side of the second rod segment 20 at intervals along its circumference. The second transmission wheel assembly 422 includes a plurality of second transmission wheels 4221, which are correspondingly disposed in the plurality of second recesses 20a. The second transmission wheels 4221 are provided with a second engagement portion 4221a arranged circumferentially thereon. The first engagement portion 4121a and the second engagement portion 4221a are engaged.
[0052] The number of the first recess 10a, the first transmission wheel 4121, the second recess 20a and the second transmission wheel 4221 are the same. The specific number can be 1, 2, 3, 5, etc., but is not limited to this. The specific number can be selected according to the size of the transmission wheel and the diameter of the bent rod 100.
[0053] Multiple first recesses 10a and multiple second recesses 20a correspond one-to-one and are connected to each other along a direction perpendicular to the axis of the bent rod 100. Multiple first transmission wheels 4121 can be spaced apart along the axial direction of the first rotation shaft 411 and are correspondingly disposed in the multiple first recesses 10a. Multiple second transmission wheels 4221 can be spaced apart along the axial direction of the second rotation shaft 421 and are correspondingly disposed in the multiple second recesses 20a. Each first transmission wheel 4121 has a first engagement portion 4121a extending circumferentially thereafter, and each second transmission wheel 4221 has a second engagement portion 4221a extending circumferentially thereafter. The first engagement portion 4121a of the first transmission wheel 4121 engages with the second engagement portion 4221a of the corresponding second transmission wheel 4221.
[0054] By setting multiple first transmission wheels 4121 and multiple second transmission wheels 4221, and the multiple first transmission wheels 4121 and multiple second transmission wheels 4221 are meshed in a one-to-one correspondence, the bending torque can be distributed to multiple meshing parts, which can reduce the contact stress of a single meshing part, thereby reducing the risk of wear of the meshing part.
[0055] In some embodiments, two first recesses 10a are formed on the inner side of the first rod segment 10. The two first recesses 10a are arranged at intervals along the circumference of the first rod segment 10. One end of the first rotating shaft 411 extends into one of the two first recesses 10a, and the other end extends into the other of the two first recesses 10a. The first transmission wheel assembly 412 includes two first transmission wheels 4121, which are respectively disposed in the two first recesses 10a. Two second recesses 20a are formed on the inner side of the second rod segment 20. The two second recesses 20a are arranged at intervals along the circumference of the second rod segment 20. One end of the second rotating shaft 421 extends into one of the two second recesses 20a, and the other end extends into the other of the two second recesses 20a. The second transmission wheel assembly 422 includes two second transmission wheels 4221, which are respectively disposed in the two second recesses 20a.
[0056] In some embodiments, the first engagement portion 4121a includes a first arcuate rack. The second engagement portion 4221a includes a second arcuate rack.
[0057] The first arc-shaped rack extends along the circumferential outer contour of the first transmission wheel 4121, and the curvature of the first arc-shaped rack is adapted to the angle to be adjusted in the first rod segment 10. The second arc-shaped rack extends along the circumferential outer contour of the second transmission wheel 4221, and the curvature of the second arc-shaped rack is adapted to the angle to be adjusted in the second rod segment 20. The first and second arc-shaped racks form a transmission connection through tooth surface contact. When the angle of the bent rod 100 changes, the meshing relationship of the arc-shaped racks can ensure the continuity of rotational motion. In some embodiments, the radius of curvature or tooth pitch parameters of the arc-shaped racks can be adjusted to adapt to different angle rotation requirements. The arc-shaped rack structure reduces frictional resistance during rotation through curved surface meshing, enabling the bent rod 100 to rotate smoothly within a preset range.
[0058] In some embodiments, the first rotating shaft 411 includes a plurality of first sub-shafts (not shown) coaxially arranged. A plurality of first transmission wheels 4121 are correspondingly sleeved on the plurality of first sub-shafts. The second rotating shaft 421 includes a plurality of second sub-shafts (not shown) coaxially arranged, and a plurality of second transmission wheels 4221 are correspondingly sleeved on the plurality of second sub-shafts.
[0059] The first rotating shaft 411 is composed of multiple coaxially arranged first sub-shafts, which can be equally spaced. Each first sub-shaft is fitted with a first transmission wheel 4121. The second rotating shaft 421 is composed of multiple coaxially arranged second sub-shafts, which can be equally spaced. Each second sub-shaft is fitted with a second transmission wheel 4221. By supporting the transmission wheels in segments through multiple sub-shafts, the first rotating shaft 411 and the second rotating shaft 421 have segmented transmission characteristics. This allows the rotational torque to be distributed across multiple sub-shafts, resulting in a more uniform distribution of the rotational torque. This, in turn, disperses stress, reduces stress concentration, and improves the fatigue resistance of the structure.
[0060] In some embodiments, the diameter of the first transmission wheel 4121 is different from the diameter of the second transmission wheel 4221. This difference in diameter results in different rotation radii when the two transmission wheels mesh. Different diameter combinations can be selected between the first transmission wheel 4121 and the second transmission wheel 4221, allowing for flexible adjustment of their space occupancy and thus optimizing the spatial layout.
[0061] The diameter of the first transmission wheel 4121 can be larger than the diameter of the second transmission wheel 4221; or the diameter of the first transmission wheel 4121 can be smaller than the diameter of the second transmission wheel 4221.
[0062] In some embodiments, please continue reading Figure 4The bending rod 100 also includes a first locking mechanism 50. The first locking mechanism 50 can be unlocked to connect the first rod segment 10 and the second rod segment 20. The first locking mechanism 50 is arranged opposite to the angle adjustment mechanism 40 along the radial direction of the bending rod 100, that is, the first locking mechanism 50 is located on the outside of the bending rod 100.
[0063] One end of the first locking mechanism 50 is rotatably disposed on one of the first rod segment 10 and the second rod segment 20, and the other end of the first locking mechanism 50 is unlockably connected to the other of the first rod segment 10 and the second rod segment 20.
[0064] The first locking mechanism 50 connects the first rod segment 10 and the second rod segment 20 when the bent rod 100 is in a bent state, fixing the first rod segment 10 and the second rod segment 20 together to form a rigid, immovable vertical rod. This allows the cleaning equipment to be stably supported on the ground when not in use, reducing the risk of the cleaning equipment tipping over due to bending of the bent rod 100. When the bent rod 100 needs to be bent, the other end of the first locking mechanism 50 can be detached from the other of the first rod segment 10 and the second rod segment 20 to facilitate adjustment of the angle between the first rod segment 10 and the second rod segment 20.
[0065] In some embodiments, one of the first rod segment 10 and the second rod segment 20 is provided with a locking groove 100b. The first locking mechanism 50 includes an operating member 51, the middle portion of which is rotatably disposed on the other of the first rod segment 10 and the second rod segment 20. One end of the operating member 51 is provided with a locking portion 511. When the bent rod 100 is in a non-bent state, the locking portion 511 is engaged in the locking groove 100b. When the bent rod 100 is in a bent state, the locking portion 511 disengages from the locking groove 100b.
[0066] The locking groove 100b can be a recessed structure formed by the outer surface of one of the first rod segment 10 and the second rod segment 20 protruding inwards, and the contour of the locking groove 100b can be adapted to the external structure of the locking part 511. The operating member 51 has a hinge part 512 in the middle, and the operating member 51 can be rotatably mounted on the other of the first rod segment 10 and the second rod segment 20 through the hinge part 512 in the middle.
[0067] The other end of the operating member 51 may be spaced apart from the outer surface of the other of the first rod segment 10 and the second rod segment 20; or, the other of the first rod segment 10 and the second rod segment 20 may have a relief groove 100c corresponding to the other end of the operating member 51, so that the operating member 51 can be driven to rotate by applying a thrust to the other end of the operating member 51. When the other end of the operating member 51 approaches the other of the first rod segment 10 and the second rod segment 20, one end of the operating member 51 moves away from the first rod segment 10 and the second rod segment 20, so that the locking part 511 disengages from the locking groove 100b; when the other end of the operating member 51 moves away from the other of the first rod segment 10 and the second rod segment 20, one end of the operating member 51 approaches the first rod segment 10 and the second rod segment 20, so that the locking part 511 is engaged in the locking groove 100b.
[0068] When the bending rod 100 is in a non-bent state, the locking part 511 is engaged in the locking groove 100b, so that the bending rod 100 can remain vertical. When the bending rod 100 needs to be bent, the other end of the operating member 51 can be pushed close to the other of the first rod segment 10 and the second rod segment 20, so that the locking part 511 disengages from the locking groove 100b, so as to adjust the angle between the first rod segment 10 and the second rod segment 20.
[0069] In some embodiments, the operating member 51 can be a retractable flexible member. The length and bending angle of the operating member 51 are adjustable, and it can adapt to the angular bending between the first rod segment 10 and the second rod segment 20. This allows the locking part 511 of the operating member 51 to be engaged in the locking groove 100b when the bent rod 100 is in a bent state, thereby keeping the bent rod 100 at the required bending angle and preventing the bending angle of the bent rod 100 from changing under the interference of external forces.
[0070] In some embodiments, the first locking mechanism 50 further includes a reset member 52. The reset member 52 is connected between the other of the first rod segment 10 and the second rod segment 20 and the operating member 51, for providing a holding force toward the locking groove 100b to the locking portion 511.
[0071] The reset member 52 can be located at the hinge portion 512 of the operating member 51, with one end abutting or connecting to the operating member 51 and the other end abutting or connecting to the other of the first rod segment 10 and the second rod segment 20; alternatively, the reset member 52 can be connected between the other of the first rod segment 10 and the second rod segment 20 and the end of the operating member 51 away from the locking portion 511. The reset member 52 is used to provide a supporting force towards the locking groove 100b for the locking portion 511, so that the locking portion 511 can be stably locked in the locking groove 100b.
[0072] In some embodiments, when the user pushes the other end of the operating member 51 closer to the other of the first rod segment 10 and the second rod segment 20, the locking part 511 disengages from the locking groove 100b, and the reset member 52 is compressed and stores the reset force toward the other end of the operating member 51, so that the reset member 52 resets when the pushing force at the other end of the operating member 51 disappears, thereby pushing the other end of the operating member 51 away from the other of the first rod segment 10 and the second rod segment 20, thereby causing the locking part 511 to move toward the locking groove 100b and engage in the locking groove 100b.
[0073] In some embodiments, the reset member 52 may be a spring.
[0074] Using a spring as the reset element 52 enables a stable and reliable reset function through a simple structure. The elastic properties of the spring provide a buffering effect during the reset process, reducing mechanical impact. Furthermore, the use of a spring reduces the overall structural complexity and facilitates manufacturing and maintenance. The replaceability of the spring also improves the adaptability of the bending rod 100, allowing for the selection of different spring specifications according to actual usage requirements, thereby optimizing the reset speed and force.
[0075] In some embodiments, the first rod segment 10 includes a first connector 11 and a first rigid tube 12, one end of the first connector 11 being sleeved outside the flexible hose 30 and the other end being sleeved outside the first rigid tube 12. The second rod segment 20 includes a second connector 21 and a second rigid tube 22, one end of the second connector 21 being sleeved outside the flexible hose 30 and the other end being sleeved outside the second rigid tube 22.
[0076] The first segment 10 includes a first rigid tube 12 and a first connector 11 sleeved on one end of the first rigid tube 12. The other end of the first rigid tube 12 is used to connect the handle of the cleaning device to one of the cleaning components. The second segment 20 includes a second rigid tube 22 and a second connector 21 sleeved on one end of the second rigid tube 22. The other end of the second rigid tube 22 is used to connect the handle of the cleaning device to another of the cleaning components. A first transmission member 41 is located on the side of the first connector 11 away from the first rigid tube 12, and a second transmission member 42 is located on the side of the second connector 21 away from the second rigid tube 22, so that the first transmission member 41 and the second transmission member 42 can be engaged together.
[0077] In some embodiments, please continue reading Figure 4When the bending angle of the bending rod 100 reaches its maximum value, the axis of the first rigid tube 12 can be parallel to the axis of the second rigid tube 22, and the distance D between the first rigid tube 12 and the second rigid tube 22 satisfies: D = d + 2H, and D is greater than 0; where d is the distance between the axis of the first transmission member 41 and the axis of the second transmission member 42, and H is the distance between the axis of the first rotating shaft 411 and the outer surface of the first rigid tube 12, or the distance between the axis of the second rotating shaft 421 and the outer surface of the second rigid tube 22. Furthermore, when the first rotating shaft 411 and the second rotating shaft 421 are located between the hose 30 and the connector, inside the connector, or on the side of the connector facing away from the hose 30, H takes a positive value; when parts of the first rotating shaft 411 and the second rotating shaft 421 are inserted inside the hose 30, H takes a negative value.
[0078] By inserting portions of the first rotating shaft 411 and the second rotating shaft 421 into the flexible hose 30, the distance D between the first rigid tube 12 and the second rigid tube 22 can be reduced, thereby expanding the bending range of the bending rod 100. This not only makes the design of the bending rod 100 easier to meet the user's needs for angle adjustment to adapt to different users and cleaning areas, but also reduces the volume of the bending rod 100 after bending, making it easier to carry and store, and helping to improve the user experience.
[0079] In some embodiments, the bending rod 100 further includes a second locking mechanism 80. The first connector 11 and the first rigid tube 12, or the second connector 21 and the second rigid tube 22, can be detachably connected via the second locking mechanism 80.
[0080] In some embodiments, the first connector 11 has a first circuit channel 11a on the side or inside the sidewall facing the hose 30. The second connector 21 has a second circuit channel 21a communicating with the first circuit channel 11a on the side or inside the sidewall facing the hose 30. The first circuit channel 11a and the second circuit channel 21a are disposed near the angle adjustment mechanism 40. The first circuit channel 11a and the second circuit channel 21a are used to accommodate conductive components such as wires. By providing the first transmission member 41 and the second transmission member 42, compared with providing only one pin, the bending stress that the conductive component needs to bear at the position of the angle adjustment mechanism 40 can be reduced, and the risk of the conductive component being deformed or broken can be reduced.
[0081] A third circuit channel 11b is provided inside the side or sidewall of one of the first connectors 11 and 21, away from the angle adjustment mechanism 40. The third circuit channel 11b connects to one of the first circuit channels 11a and the second circuit channel 21a. The bending rod 100 also includes a power connector 60 and a conductive element. The power connector 60 is located within the third circuit channel 11b. The conductive element can be a wire. One end of the conductive element is connected to the power connector 60, and the other end extends into the first circuit channel 11a and the second circuit channel 21a.
[0082] In some embodiments, when the handheld part is located at the end of the first rigid tube 12 away from the second rigid tube 22, the third circuit channel 11b is located at the first connector 11, and the third circuit channel 11b, the first circuit channel 11a, and the second circuit channel 21a are sequentially connected; when the handheld part is located at the end of the second rigid tube 22 away from the first rigid tube 12, the third circuit channel 11b is located at the second connector 21, and the third circuit channel 11b, the second circuit channel 21a, and the first circuit channel 11a are sequentially connected, so that the power connector 60 is located close to the handheld part. On the one hand, this allows for continuous operation of the cleaning equipment during operation. The external wires of the power connector 60 are not in close contact with the cleaning components or the ground, which reduces the risk of the external wires getting tangled in the cleaning components, obstructing the cleaning components from the surface to be cleaned, or getting tangled in the clamp legs. On the other hand, it eliminates the need for users to bend over when controlling the power connector 60, improving the convenience of using the cleaning components and enhancing the user experience. Furthermore, keeping the power connector 60 away from the cleaning components reduces contact between the power connector 60 and water stains or other damp items on the surface to be cleaned, thereby reducing the risk of electric leakage and improving the safety of using the cleaning components.
[0083] The power connector 60 is located in the third circuit channel 11b, and the other end of the conductive element extends into the first circuit channel 11a and the second circuit channel 21a to electrically connect the cleaning assembly to the power connector 60.
[0084] In some embodiments, the bending rod 100 further includes a cover 70. The cover 70 is used to cover the first recess 10a and the second recess 20a when the bending rod 100 is in a non-bent state, so as to cover the first drive wheel 4121 and the second drive wheel 4221.
[0085] The shape of the cover 70 can be adapted to the overall outline of the first recess 10a and the second recess 20a. One end of the cover 70 is placed over the first recess 10a to cover the first drive wheel 4121, and the other end extends into the second recess 20a to cover the second drive wheel 4221. The number of covers 70 can be adapted to the number of first recesses 10a.
[0086] The cover 70 can be detachably installed over the first recess 10a and the second recess 20a, so that the cover 70 can be removed and the bending rod 100 can be bent. The cover 70 can cover the first drive wheel 4121 and the second drive wheel 4221 when the bending rod 100 is not bent or when the cleaning equipment is not in use, thereby reducing or preventing liquids, dust, etc. from falling on the first drive wheel 4121 and the second drive wheel 4221, protecting the first drive wheel 4121 and the second drive wheel 4221, and helping to extend the service life of the first drive wheel 4121 and the second drive wheel 4221.
[0087] This application also provides a cleaning device. The cleaning device includes the bending rod 100, a handle, and a cleaning component as described in any of the above embodiments. The handle is connected to one end of the bending rod 100, and the cleaning component is connected to the other end of the bending rod 100.
[0088] Specifically, the handle is connected to one of the first segment 10 and the second segment 20 of the bending rod 100 at the end away from the other of the first segment 10 and the second segment 20. The cleaning assembly is connected to the other of the first segment 10 and the second segment 20 at the end away from the other of the first segment 10 and the second segment 20.
[0089] The cleaning equipment can be a handheld vacuum cleaner, a handheld mop, or a handheld vacuum and mop combo, but is not limited to these. The following examples use a handheld vacuum cleaner as an example.
[0090] When the cleaning device is a handheld vacuum cleaner, the cleaning component can be a nozzle, and the bending rod 100 can be used to transmit suction. For example, the vacuum cleaner can use the bending rod 100 to create a vacuum in the nozzle so that the vacuum cleaner can suck the objects to be cleaned in the area to be cleaned into the dust collection component (not shown) inside the vacuum cleaner through the nozzle. Furthermore, the angle between the first rod segment 10 and the second rod segment 20 can be adjusted to suit different users or cleaning areas.
[0091] In this embodiment, the specific structure of the bending rod 100 is the same as described in the above embodiments. Since the cleaning equipment adopts all the technical solutions of all the above embodiments of the bending rod 100, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.
[0092] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.
Claims
1. A bending rod, characterized in that, The bent rod includes: First segment; Second segment; A flexible tube is connected between the first rod segment and the second rod segment, and a connecting flow channel is formed within the first rod segment, the flexible tube, and the second rod segment; An angle adjustment mechanism includes a first transmission member disposed at one end of the first rod segment near the second rod segment and a second transmission member disposed at one end of the second rod segment near the first rod segment. The first transmission member and the second transmission member are in contact with each other and are arranged to roll relative to each other. The first transmission member and the second transmission member are used to rotate in opposite directions to adjust the angle between the first rod segment and the second rod segment.
2. The bending rod according to claim 1, characterized in that, The first transmission component includes a first rotating shaft and a first transmission wheel set. The first rotating shaft is disposed on the first rod segment, and the first transmission wheel set is sleeved outside the first rotating shaft. The second transmission component includes a second rotating shaft and a second transmission wheel set. The second rotating shaft is disposed on the second rod segment, and the second transmission wheel set is sleeved on the second rotating shaft and is in contact with the first transmission wheel set and is arranged to roll relative to it.
3. The bending rod according to claim 2, characterized in that, One end of the hose is inserted into the first rod segment, and the other end of the hose is inserted into the second rod segment; The axial direction of the first rotating shaft intersects with the axial direction of the first rod segment. A portion of the first rotating shaft is located on the side of the first rod segment facing the hose and abuts against or is spaced from the hose, or passes through the hose. Another portion is located on the side of the first rod segment away from the hose and is connected to the first transmission wheel set. The axial direction of the second rotating shaft intersects with the axial direction of the second rod segment. A portion of the second rotating shaft is located between the second rod segment and the hose and abuts against or is spaced from the hose, or passes through the hose. Another portion is located on the side of the second rod segment facing away from the hose and is connected to the second transmission wheel set.
4. The bending rod according to claim 3, characterized in that, The first rod segment has a first recess on the side facing away from the hose, and the first recess is used to accommodate the first transmission wheel set; The second rod segment has a second recess formed on the side facing away from the hose, and the second recess is used to accommodate the second drive wheel assembly.
5. The bending rod according to claim 4, characterized in that, The inner side of the first rod segment is formed with a plurality of first recesses arranged at intervals along its circumference. The first transmission wheel set includes a plurality of first transmission wheels, which are respectively disposed in the plurality of first recesses. The first transmission wheel is provided with a first meshing part arranged along its circumference. The inner side of the second rod segment is formed with a plurality of second recesses arranged at intervals along its circumference. The second transmission wheel set includes a plurality of second transmission wheels, which are respectively disposed in the plurality of second recesses. The second transmission wheel is provided with a second meshing part arranged along its circumference. The first engaging portion and the second engaging portion are engaged.
6. The bending rod according to claim 5, characterized in that, The first meshing portion includes a first arc-shaped rack; the second meshing portion includes a second arc-shaped rack.
7. The bending rod according to claim 5, characterized in that, The first rotating shaft includes a plurality of first sub-shafts coaxially arranged, and the plurality of first transmission wheels are respectively sleeved on the plurality of first sub-shafts; The second rotating shaft includes a plurality of second sub-shafts arranged coaxially, and the plurality of second transmission wheels are fitted onto the plurality of second sub-shafts in a corresponding manner.
8. The bending rod according to claim 4, characterized in that, The diameter of the first transmission wheel is different from the diameter of the second transmission wheel.
9. The bending rod according to any one of claims 1 to 8, characterized in that, The bending rod also includes a first locking mechanism, which can unlockably connect the first rod segment and the second rod segment, and is arranged opposite to the angle adjustment mechanism along the radial direction of the bending rod.
10. The bending rod according to claim 9, characterized in that, One of the first rod segment and the second rod segment is provided with a locking groove; the first locking mechanism includes an operating member, the middle part of which is rotatably disposed on the other of the first rod segment and the second rod segment, and one end of the operating member is provided with a locking part; When the bent rod is in a non-bent state, the locking part is engaged in the locking groove; when the bent rod is in a bent state, the locking part disengages from the locking groove.
11. The bending rod according to claim 10, characterized in that, The first locking mechanism further includes a reset member connected between the first rod segment and the other of the second rod segment and the operating member, for providing a holding force toward the locking groove for the locking part.
12. The bending rod according to any one of claims 1 to 8, characterized in that, The first rod segment includes a first connector and a first rigid tube, with one end of the first connector sleeved outside the flexible tube and the other end sleeved outside the first rigid tube; The second rod segment includes a second connector and a second rigid tube, with one end of the second connector sleeved outside the flexible tube and the other end sleeved outside the second rigid tube; The first transmission component is located on the side of the first joint away from the first rigid tube, and the second transmission component is located on the side of the second joint away from the second rigid tube.
13. The bending rod according to claim 12, characterized in that, The first connector has a first circuit channel inside the side or sidewall facing the hose, and the second connector has a second circuit channel inside the side or sidewall facing the hose that communicates with the first circuit channel. The first circuit channel and the second circuit channel are located close to the angle adjustment mechanism. One of the first connectors and the second connector, at the end furthest from the angle adjustment mechanism, has a third circuit channel on the side or inside the sidewall facing the hose, the third circuit channel connecting the first circuit channel and the second circuit channel; the bending rod further includes: A power connector is located within the third circuit channel; A conductive element, one end of which is connected to the power connector, and the other end of which extends into the first circuit channel and the second circuit channel.
14. The bending rod according to claim 5, characterized in that, The bending rod also includes a cover, which is used to cover the first recess and the second recess when the bending rod is in the non-bent state, so as to cover the first drive wheel and the second drive wheel.
15. A cleaning device, characterized in that, The cleaning equipment includes: The bending rod as described in any one of claims 1 to 14; The handle is connected to one end of the bent rod; A cleaning component is attached to the other end of the bent rod.