Suction head for dust collector and dust collector

Abstract

The utility model relates to the field of dust collectors, and particularly provides a suction head for a dust collector. At present, two sides of a roller of a suction head are easy to wind foreign matters. Therefore, the utility model provides the suction head for the dust collector, which comprises a main body, a roller, a first mounting shaft and a second mounting shaft, wherein the main body is provided with a dust suction inlet and a cleaning roller; the rolling wheel is arranged at the bottom of the main body and used for supporting the suction head, and sinking grooves are formed in the two sides of the rolling wheel in the axial direction respectively; a first mounting shaft is fixedly connected with the main body, and one part of the first mounting shaft is embedded into one of the two sinking grooves and is in rolling contact or clearance fit with the roller; a second mounting shaft is fixedly connected with the main body, and one part of the second mounting shaft is embedded into the other one of the two sinking grooves and is in rolling contact or clearance fit with the roller. According to the utility model, the technical problems are solved.

Description

Technical Field

[0001] This utility model relates to the field of vacuum cleaners, and specifically provides a vacuum cleaner head and a vacuum cleaner. Background Technology

[0002] Current vacuum cleaner heads generally employ a bottom roller structure for movement guidance. Traditional rollers often use a single-sided through-mount or double-sided shaft hole fit structure, resulting in a large assembly gap between the roller and the main body of the vacuum head on both axial sides. This gap is often annular and deep at its root. During actual cleaning, flexible foreign objects such as carpet fibers, hair, and lint can easily enter the rotating parts of the roller through this gap, forming tangles and accumulations at the root. As the amount of tangled material increases, the roller's rotational resistance increases significantly, leading to problems such as difficulty in pushing, jamming of the vacuum head, and in severe cases, even complete roller lock-up. While existing technologies offer solutions to reduce foreign object entry by adding sealing rings or protective covers, such designs often complicate the structure, increase manufacturing costs, and may affect the roller's rotational flexibility. Utility Model Content

[0003] One objective of this invention is to solve the problem that foreign objects are easily entangled on both sides of the roller of the suction head.

[0004] In order to solve the above-mentioned problems in the prior art, the purpose of this utility model is to provide a vacuum cleaner head that effectively prevents foreign objects from getting tangled on both sides of the rollers and improves the user experience.

[0005] To achieve the above objectives, one aspect of this utility model provides a vacuum cleaner head, comprising:

[0006] The main body is equipped with a dust suction port;

[0007] A roller is located at the bottom of the main body to support the suction head. The roller has grooves on both sides in the axial direction.

[0008] A first mounting shaft is fixedly connected to the main body, and a portion of the first mounting shaft is embedded in one of the two recesses and makes rolling contact or clearance fit with the roller.

[0009] The second mounting shaft is fixedly connected to the main body, and a portion of the second mounting shaft is embedded in the other of the two recesses and makes rolling contact or clearance fit with the roller.

[0010] Optionally, the roller has a through hole connecting the two sinks;

[0011] The first mounting shaft has a first support shaft embedded in the groove and a first plug shaft inserted into the through hole, the first plug shaft having rolling contact or clearance fit with the roller.

[0012] Optionally, the first insertion shaft is provided with an insertion hole on the side facing the second mounting shaft;

[0013] The second mounting shaft has a second support shaft embedded in the recess and a second insertion shaft that inserts into the insertion hole.

[0014] Optionally, the ratio of the diameter of the first support shaft to the diameter of the roller end face is selected from any value in the range of [0.51, 0.95]; and / or

[0015] The ratio of the diameter of the second support shaft to the diameter of the roller end face is selected from any value in the range of [0.51, 0.95].

[0016] Optionally, the ratio of the length of the through hole to the axial width of the roller is selected from any value in the range of [0.46, 0.88].

[0017] Optionally, the first support shaft protrudes from the groove toward the end face of the roller in a direction away from the first insertion shaft; and / or

[0018] The second support shaft protrudes from the groove toward the end face of the roller in a direction away from the second insertion shaft.

[0019] Optionally, the main body has a first slot, and the first mounting shaft has a first insert on the side of the first support shaft away from the first insertion shaft, and the first insert is inserted into the first slot;

[0020] The main body has a second slot, and the second mounting shaft has a second insert on the side of the second support shaft away from the second insertion shaft, and the second insert is inserted into the second slot.

[0021] Optionally, the first slot has a first anti-reverse groove, and the first insert block is provided with a first anti-reverse strip on the side away from the first support shaft, and the first anti-reverse groove engages with the first anti-reverse strip;

[0022] The second slot has a second anti-reverse groove, and the second insert has a second anti-reverse strip on the side away from the second support shaft, and the second anti-reverse groove engages with the second anti-reverse strip.

[0023] Optionally, the first plug shaft has a plurality of strip grooves that extend axially and are evenly distributed on its circumferential surface.

[0024] Another aspect of this utility model provides a vacuum cleaner.

[0025] Based on the foregoing description, those skilled in the art will understand that in the aforementioned technical solution of this utility model, by setting grooves on both sides of the roller axial direction, and embedding a portion of the first mounting shaft and a portion of the second mounting shaft into the two grooves respectively to make rolling contact or clearance fit with the roller, a gap with a bending structure is formed between the first mounting shaft and the second mounting shaft and the roller, which can effectively block foreign objects compared with the strip-shaped gap in the prior art, and prevent foreign objects from getting tangled in the gap, especially at the root of the gap.

[0026] Furthermore, by setting a through hole in the roller to connect the two recesses, the first support shaft of the first mounting shaft is embedded in the recess and rolls in contact with or clearance fits with the roller, and the first insertion shaft of the first mounting shaft is inserted into the through hole, so that the first mounting shaft can provide multi-point support for the roller, dispersing the force and load generated when the roller rotates, making the roller more stable during rotation.

[0027] Furthermore, by providing a first slot and a second slot on the main body, and a first insert block that engages with the first slot on the side of the first support shaft away from the first insertion shaft, and a second insert block that engages with the second slot on the side of the second support shaft away from the second insertion shaft, the installation and removal of the rollers are facilitated. Especially when cleaning the clearance cavity, the user can easily remove the rollers and directly clean the dirt inside the clearance cavity.

[0028] Other beneficial effects of this utility model will be described in detail below with reference to the accompanying drawings, so that those skilled in the art can more clearly understand the improvement purpose, features and advantages of this utility model. Attached Figure Description

[0029] To more clearly illustrate the technical solution of this utility model, some embodiments of this utility model will be described below with reference to the accompanying drawings. Those skilled in the art should understand that the same reference numerals may indicate the same or similar components or parts in different drawings; the drawings of this utility model are not necessarily drawn to scale. In the drawings:

[0030] Figure 1 These are isometric views of the suction head in some embodiments of this utility model;

[0031] Figure 2 yes Figure 1 Another isometric view of the center suction head;

[0032] Figure 3 yes Figure 1 A bottom view of the suction head;

[0033] Figure 4 yes Figure 3 Exploded view of the first mounting shaft, roller, and second mounting shaft;

[0034] Figure 5 yes Figure 3 A magnified view of a portion of region A in the middle;

[0035] Figure 6 yes Figure 4 Axonometric view of the first mounting shaft, roller, and second mounting shaft in their assembled state;

[0036] Figure 7 yes Figure 6 Side view of the first mounting shaft, roller, and second mounting shaft in their assembled state;

[0037] Figure 8 yes Figure 7 Sectional view along the middle AA;

[0038] Figure 9 yes Figure 2 Enlarged view of section B (scroll wheel is hidden).

[0039] Explanation of reference numerals in the attached figures:

[0040] 01. Suction head;

[0041] 100. Main body; 200. Roller; 300. First mounting shaft; 400. Second mounting shaft; 500. Support wheel;

[0042] 110, First slot; 120, Second slot; 121, Second anti-reverse groove; 130, Suction port; 140, Cleaning roller; 150, Clearance cavity;

[0043] 210. Slot; 220. Through hole; 230. End face; 240. Wheel core; 250. Rubber coating layer;

[0044] 310, First support shaft; 320, First insertion shaft; 321, Insertion hole; 322, Strip groove; 330, First insertion block; 331, First anti-reverse strip;

[0045] 410, Second support shaft; 420, Second insertion shaft; 421, Center hole; 430, Second insertion block; 431, Second anti-reverse strip. Detailed Implementation

[0046] Those skilled in the art should understand that the embodiments described below are merely some embodiments of the present invention, and not all embodiments of the present invention. These embodiments are intended to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. Based on the embodiments provided by the present invention, all other embodiments obtained by those skilled in the art without creative effort should still fall within the scope of protection of the present invention.

[0047] It should be noted that in the description of this utility model, terms such as "center," "upper," "lower," "top," "bottom," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0048] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. For example, unless otherwise specified, the terms "installation," "connection," "joining," and "fixing" can specifically refer to any feasible connection form such as bolt connection, screw connection, welding, insertion, riveting, fusion welding, or snap-fit.

[0049] like Figure 1 As shown, in some embodiments of this utility model, the suction head 01 includes a main body 100, and the main body 100 constitutes the overall structure of the suction head 01.

[0050] like Figure 2 As shown, the suction head 01 also includes a suction port 130 disposed at the bottom of the main body 100. The suction port 130 is a strip-shaped opening with the opening direction facing downward and is disposed along the horizontal direction of the suction head 01.

[0051] Continue reading Figure 2 In some embodiments of this utility model, there are two suction ports 130, which are distributed at intervals, one located on the front side of the suction head 01 and the other located on the rear side of the suction head 01.

[0052] In this embodiment, two spaced-apart suction ports 130 are positioned, one at the front and the other at the rear of the suction head 01. This arrangement significantly enhances the suction range of the suction head 01. During movement, the front suction port 130 can capture dust in advance, while the rear suction port 130 can further clean up any missed dust, creating a coordinated suction effect. Whether moving in a straight line or turning, this ensures complete coverage of the cleaning area, greatly improving cleaning efficiency and quality.

[0053] In addition, in other embodiments of this utility model, those skilled in the art can also set the number of suction ports 130 to any feasible number, such as one or three, as needed.

[0054] Continue reading Figure 2 The suction head 01 may also include a cleaning roller 140 rotatably connected to the main body 100. There are two cleaning rollers 140, which are respectively disposed inside the main body 100 corresponding to the two suction ports 130. At least a portion of the cleaning roller 140 protrudes downward from the suction port 130 so that the cleaning roller 140 can contact the ground when the suction head 01 is working.

[0055] The cleaning roller 140 can be any feasible roller such as a brush roller or a cloth roller.

[0056] In addition, in other embodiments of this utility model, those skilled in the art may omit the cleaning roller 140 as needed.

[0057] like Figure 2 and Figure 3 As shown, in some embodiments of this utility model, the suction head 01 also includes a roller 200 disposed at the bottom of the main body 100. The roller 200 and the main body 100 are rotatably connected so that the suction head 01 can move on the ground.

[0058] Continue reading Figure 2 In some embodiments of this utility model, the roller 200 can be disposed between two suction ports 130, and at least a portion of the roller 200 protrudes downward from the bottom of the main body 100 so that the roller 200 can contact the ground, thereby enabling the roller 200 to support the suction head 01 and creating a certain gap between the bottom of the suction head 01 and the ground.

[0059] Understandably, by placing the roller 200 between the two suction ports 130, this embodiment can, to some extent, prevent the roller 200 from getting entangled with foreign objects. This is because, regardless of whether the suction head moves forward or backward, the foreign objects first pass through the suction ports 130 and then through the roller 200. Most of the foreign objects will be sucked away at the suction ports 130, effectively preventing the roller 200 from getting entangled with foreign objects.

[0060] Continue reading Figure 2 In some embodiments of this invention, there may be two rollers 200. One roller 200 is positioned near one side of the suction head 01 in the lateral direction, and the other roller 200 is positioned near the other side of the suction head 01 in the lateral direction. Positioning the rollers 200 on both sides avoids most foreign objects, preventing the rollers 200 from directly crushing and causing the suction head 01 to jam or be damaged. This not only protects the suction head 01 itself but also improves the continuity and efficiency of the cleaning process.

[0061] like Figure 3 As shown, in some embodiments of this utility model, the roller 200 can be positioned at the center of the front-to-back direction of the suction head 01, so that the suction head 01 can change its direction of movement more flexibly during the cleaning process.

[0062] Continue reading Figure 3 In some embodiments of this invention, the two rollers 200 can be symmetrically arranged in the transverse direction of the suction head 01. This symmetrical arrangement allows the weight of the suction head 01 to be evenly distributed across both rollers 200, preventing any single roller 200 from bearing excessive pressure. During the movement of the suction head 01, the rollers 200 on both sides share the weight of the suction head 01 and the impact force generated during movement. This uniform force distribution reduces wear and fatigue of the rollers 200, extending their service life. Simultaneously, it also reduces the stress on the internal structure of the suction head 01, minimizing structural deformation or damage caused by uneven force distribution, thereby improving the overall durability of the suction head 01.

[0063] like Figure 4 As shown, in some embodiments of this utility model, the roller 200 is provided with grooves 210 on both sides in the axial direction, from Figure 4 Only the groove 210 on one side of the roller 200 is visible in the image. Those skilled in the art will understand that a groove 210 is also provided on the other side of the roller 200. The groove 210 is formed by axially recessing from the end face 230 of the roller 200. The shape of the groove 210 is circular, and the diameter of the groove 210 is smaller than the diameter of the end face 230 of the roller 200.

[0064] like Figure 8 As shown, in some embodiments of this utility model, the roller 200 includes a wheel core 240 and a rubber coating layer 250. The wheel core 240 is made of metal (such as aluminum alloy or steel) or plastic and serves as the skeleton of the roller 200, providing structural support and strength. The rubber coating layer 250 is made of high-molecular elastic materials such as rubber or polyurethane and tightly wraps around the outer surface of the wheel core 240, providing functions such as cushioning, wear resistance, and anti-slip.

[0065] like Figure 5 As shown, the suction head 01 also includes a first mounting shaft 300 and a second mounting shaft 400. The first mounting shaft 300 is fixedly connected to the main body 100, and the second mounting shaft 400 is fixedly connected to the main body 100.

[0066] In some embodiments of this utility model, the depth of the grooves 210 on both sides of the roller 200 can be the same, so that the supporting force of the first support shaft 310 and the second support shaft 410 on the roller 200 is the same, which is beneficial to the uniform force on both sides of the roller 200.

[0067] like Figure 6 , 7 As shown in Figure 8, a portion of the first mounting shaft 300 is embedded in one of the two recesses 210 and rolls in contact with or has a clearance fit with the roller 200. Similarly, a portion of the second mounting shaft 400 is embedded in the other of the two recesses 210 and rolls in contact with or has a clearance fit with the roller 200. Neither the first nor the second mounting shaft 400 rotates; the roller 200 is supported by the recesses 210. Because the first and second mounting shafts do not rotate, the suction head 01 is less likely to trap foreign objects on the first and second mounting shafts 300 and 400 on both sides of the roller 200 during operation, thus preventing the accumulation of foreign objects on both sides of the roller 200 and avoiding blockage of its rotation.

[0068] Meanwhile, the first mounting shaft 300 and the second mounting shaft 400 each form a gap with a bent structure with the roller 200. Compared with the strip-shaped gap in the prior art, this can effectively block foreign objects and prevent them from getting tangled in the gap, especially at the root of the gap.

[0069] It will be understood by those skilled in the art that, as Figure 8 As shown, since grooves 210 are formed on both sides of the roller 200, after the first support shaft 310 and the second support shaft 320 are embedded in the grooves 210, a gap with a bending structure is formed between the first support shaft 310 and the groove 210, and a gap with a bending structure is also formed between the second support shaft 320 and the groove 210. This can effectively block foreign objects and prevent them from getting tangled in the root of the gap.

[0070] like Figure 4 As shown, in some embodiments of this utility model, the roller 200 has a through hole 220 connecting two recesses 210. The through hole 220 is coaxially arranged with the circular recesses 210, and the diameter of the recesses 210 is larger than the diameter of the through hole 220.

[0071] like Figure 5 , 6 As shown in Figure 7, the first mounting shaft 300 has a first support shaft 310 embedded in the recess 210 and a first insertion shaft 320 inserted into the through hole 220. The first support shaft 310 has rolling contact or clearance fit with the recess 210. The first insertion shaft 320 has rolling contact or clearance fit with the roller 200. The first support shaft 310, the second support shaft 410, and the first insertion shaft 320 together support the rotation of the roller 200.

[0072] Those skilled in the art will understand that the first support shaft 310 is embedded in the recess 210 and rolls or clearance-fits with the recess 210, the first insertion shaft 320 is inserted into the through hole 220 and rolls or clearance-fits with the roller 200, and with the synergistic effect of the second support shaft 410, a multi-point support structure is formed. This structure can distribute the force and load generated when the roller 200 rotates, making the roller 200 more stable during rotation. This avoids the roller 200 from shaking or deviating during rotation, ensuring the smoothness of the roller 200's rotation.

[0073] In addition, stable rotation helps improve the vacuum cleaner's suction effect, because the stable rotation of the roller 200 can ensure that the suction head 01 remains stable during movement, so that the suction port 130 always maintains a good fit with the ground, thereby collecting dust more effectively.

[0074] like Figure 4 , 8 As shown, in some embodiments of this utility model, the first insertion shaft 320 has an insertion hole 321 on the side facing the second mounting shaft 400. The second mounting shaft 400 has a second support shaft 410 embedded in the countersunk groove 210 and a second insertion shaft 420 that inserts into the insertion hole 321. The second support shaft 410 has rolling contact or clearance fit with the countersunk groove 210. The second insertion shaft 420 has an interference fit with the insertion hole 321.

[0075] As will be understood by those skilled in the art, this fitting method allows the second insertion shaft 420 to be tightly inserted into the insertion hole 321, thereby achieving a stable connection between the first mounting shaft 300 and the second mounting shaft 400, enhancing the overall integrity of the entire support structure, and preventing the first mounting shaft 300 and the second mounting shaft 400 from becoming relatively loose or separating during use, so that the suction head 01 can maintain a stable working state during movement and dust collection.

[0076] like Figure 8 As shown, in some embodiments of this utility model, the second insertion shaft 420 has a central hole 421.

[0077] like Figure 5 , 9 As shown, the main body 100 also has a relief cavity 150, with a first slot 110 and a second slot 120 disposed on two opposite side walls in the relief cavity 150. The roller 200 is installed in the relief cavity 150 through the first slot 110 and the second slot 120. At least a portion of the roller 200 is outside the relief cavity 150 so that the roller 200 rotates in contact with the ground.

[0078] like Figure 4As shown, in some embodiments of this utility model, the ratio of the diameter of the first support shaft 310 to the diameter of the end face 230 of the roller 200 can be selected from any value in the range of [0.51, 0.95]. The ratio of the diameter of the second support shaft 410 to the diameter of the end face 230 of the roller 200 can be selected from any value in the range of [0.51, 0.95].

[0079] Furthermore, the ratio of the diameter of the first support shaft 310 to the diameter of the end face 230 of the roller 200 can be selected from any value in the range of [0.7, 0.95]. The ratio of the diameter of the second support shaft 410 to the diameter of the end face 230 of the roller 200 can also be selected from any value in the range of [0.7, 0.95].

[0080] like Figure 8 As shown, in some embodiments of this utility model, the ratio of the length of the through hole 220 to the axial width of the roller 200 can be selected from any value in [0.46, 0.88].

[0081] Furthermore, the ratio of the length of the through hole 220 to the axial width of the roller 200 can be selected from any value in the range of [0.53, 0.79].

[0082] like Figure 8 As shown, in some embodiments of this utility model, the first support shaft 310 protrudes from the recess 210 toward the end face 230 of the roller 200 in a direction away from the first insertion shaft 320. The second support shaft 410 protrudes from the recess 210 toward the end face 230 of the roller 200 in a direction away from the second insertion shaft 420.

[0083] Those skilled in the art will understand that the present invention achieves this by having the first support shaft 310 and the second support shaft 410 protrude outward from the sink 210, and by increasing the diameter of the first support shaft 310 and the second support shaft 410, thereby giving the first support shaft 310 and the second support shaft 410 a greater surface curvature. The greater the curvature, the less likely the first support shaft 310 and the second support shaft 410 are to become entangled with foreign objects.

[0084] like Figure 9 As shown, in some embodiments of this utility model, the main body 100 has a first slot 110 and a second slot 120. For example... Figure 4 , 8 As shown, a first mounting shaft 300 has a first insert 330 on the side of the first support shaft 310 away from the first insertion shaft 320, and the first insert 330 is inserted into the first slot 110. A second mounting shaft 400 has a second insert 430 on the side of the second support shaft 410 away from the second insertion shaft 420, and the second insert 430 is inserted into the second slot 120. Figure 5The display shows the state after the first plug 330 is plugged into the first slot 110 and the second plug 430 is plugged into the second slot 120.

[0085] When the first mounting shaft 300 or the second mounting shaft 400 malfunctions and needs replacement, the plug-in structure allows for easy removal of the first insert 330 from the first slot 110 and the second insert 430 from the second slot 120 by applying external force. This disassembly method is simple and quick, requiring no disassembly of other related components. This enables rapid replacement of damaged parts, reduces maintenance time, and minimizes the impact of equipment failure on production or use. For example, if a mounting shaft is damaged during vacuum cleaner use, the user can quickly replace it themselves.

[0086] Furthermore, when it is necessary to clean the clearance cavity 150, the user can easily remove the roller 200 to directly clean the dirt in the clearance cavity 150.

[0087] like Figure 9 As shown, in some embodiments of this utility model, the first slot 110 has a first anti-reverse groove (not shown in the figure), and the first insert 330 is provided with a first anti-reverse strip 331 on the side away from the first support shaft 310, and the first anti-reverse groove engages with the first anti-reverse strip 331. The second slot 120 has a second anti-reverse groove 121, and the second insert 430 is provided with a second anti-reverse strip 431 on the side away from the second support shaft 410, and the second anti-reverse groove 121 engages with the second anti-reverse strip 431. The first anti-reverse groove and the second anti-reverse groove 121 are identical.

[0088] like Figure 8 As shown, in some embodiments of this utility model, the cross-section of the first anti-reverse strip 331 and the second anti-reverse strip 431 is a right-angled triangle. The first anti-reverse strip 331 and the second anti-reverse strip 431 are arranged on the rotation axis of the roller 200, which is beneficial to the stable connection of the roller 200 to the main body 100.

[0089] In some embodiments of this utility model, the first slot 110 and the first insert 330 may also be connected by an interference fit, and the second slot 120 and the second insert 430 may also be connected by an interference fit.

[0090] like Figure 4As shown, in some embodiments of this utility model, the first insertion shaft 320 has a plurality of axially extending and uniformly distributed strip grooves 322 on its circumferential surface. Specifically, the number of strip grooves 322 can be four. The presence of the strip grooves 322 can reduce the contact area and lower the coefficient of friction. The originally continuous circumferential surface will generate greater sliding friction, while the strip grooves 322 make part of the contact surface discontinuous, thereby reducing the friction during rotation. The roller 200 rotates more easily, reducing energy loss and improving rotation efficiency. When the vacuum cleaner is working, this means that the suction head 01 moves more smoothly, the user needs less force to push the suction head 01, and reduces fatigue during use.

[0091] Furthermore, the groove 322 provides space for the storage and flow of lubricating oil. During rotation, the lubricating oil can be more easily distributed to the contact surfaces of the first insertion shaft 320 and other mating parts, forming a good lubricating film, thereby extending the service life of the first insertion shaft 320.

[0092] like Figure 1 As shown, the suction head 01 also has a support wheel 500, located at the rear of the suction head 01. The support wheel and the roller 200 together support the operation of the suction head 01.

[0093] This utility model also provides a vacuum cleaner mainly composed of a motor, a dust collection box, a duct, a suction head, and other components.

[0094] The suction head 01 provided by this utility model forms a gap with a bent structure between the first mounting shaft 300 and the second mounting shaft 400 and the roller 200, which can effectively block foreign objects and prevent them from getting tangled in the gap, especially at the root of the gap. Furthermore, by protruding the first support shaft 310 and the second support shaft 410 outward from the groove 210, the diameters of the first support shaft 310 and the second support shaft 410 are increased, thereby giving the first support shaft 310 and the second support shaft 410 a greater surface curvature. The greater the curvature, the less likely the first support shaft 310 and the second support shaft 410 are to get tangled in foreign objects.

[0095] The technical solution of this utility model has been described in conjunction with several embodiments above. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is not limited to these specific embodiments. Without departing from the technical principles of this utility model, those skilled in the art can disassemble and combine the technical solutions in the above embodiments, and can also make equivalent changes or substitutions to the relevant technical features. Any changes, equivalent substitutions, improvements, etc., made within the technical concept and / or technical principles of this utility model will fall within the protection scope of this utility model.

Claims

1. A suction head for a vacuum cleaner, characterized in that Comprising: a main body provided with a suction port; a roller arranged at the bottom of the main body for supporting the suction head, the roller being provided with a sink on both sides in the axial direction; a first mounting shaft fixedly connected with the main body, a part of the first mounting shaft being embedded in one of the two sinks and in rolling contact or clearance fit with the roller; a second mounting shaft fixedly connected with the main body, a part of the second mounting shaft being embedded in the other of the two sinks and in rolling contact or clearance fit with the roller.

2. The suction head for a vacuum cleaner according to claim 1, wherein: the roller has a through hole connecting the two sinks; the first mounting shaft has a first support shaft embedded in the sink and a first plug-in shaft inserted into the through hole, the first plug-in shaft being in rolling contact or clearance fit with the roller.

3. The suction head for a vacuum cleaner according to claim 2, wherein: the first plug-in shaft is provided with a plug-in hole on the side facing the second mounting shaft; the second mounting shaft has a second support shaft embedded in the sink and a second plug-in shaft plugged into the plug-in hole.

4. The suction head for a vacuum cleaner according to claim 3, wherein: the ratio of the diameter of the first support shaft to the diameter of the end face of the roller is selected from any value in the range of [0.51, 0.95]; and / or the ratio of the diameter of the second support shaft to the diameter of the end face of the roller is selected from any value in the range of [0.51, 0.95].

5. The suction head for a vacuum cleaner according to claim 2, wherein: the ratio of the length of the through hole to the axial width of the roller is selected from any value in the range of [0.46, 0.88].

6. The suction head for a vacuum cleaner according to claim 3, wherein: the first support shaft protrudes from the sink towards the end face of the roller in a direction away from the first plug-in shaft; and / or the second support shaft protrudes from the sink towards the end face of the roller in a direction away from the second plug-in shaft.

7. The suction head for a vacuum cleaner according to claim 3, wherein: the main body has a first insertion slot, the first mounting shaft is provided with a first insertion block on the side of the first support shaft away from the first plug-in shaft, and the first insertion block is plugged into the first insertion slot; the main body has a second insertion slot, the second mounting shaft is provided with a second insertion block on the side of the second support shaft away from the second plug-in shaft, and the second insertion block is plugged into the second insertion slot.

8. The suction head for a vacuum cleaner according to claim 7, wherein: the first insertion slot has a first anti-backout groove, the first insertion block is provided with a first anti-backout strip on the side away from the first support shaft, and the first anti-backout groove is clamped with the first anti-backout strip; the second insertion slot has a second anti-backout groove, the second insertion block is provided with a second anti-backout strip on the side away from the second support shaft, and the second anti-backout groove is clamped with the second anti-backout strip.

9. The suction head for a vacuum cleaner according to claim 2, wherein: The first plug-in shaft has a plurality of strip-shaped grooves on the circumferential surface and extending in the axial direction and uniformly distributed.

10. A vacuum cleaner comprising: A suction head for a vacuum cleaner according to any one of claims 1 to 9.

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