Dust collector suction nozzle and small handheld dust collector

Abstract

The utility model relates to the technical field of dust collector suction nozzles, and particularly discloses a dust collector suction nozzle and a small handheld dust collector. The wiping piece is connected with the elastic piece, the side face, facing the dust collection opening, of the wiping piece is a wiping face, and soft rubber scraping teeth are arranged on the wiping face. The included angle formed by the dust suction port and the wiping surface is 90-155 degrees in the initial state; the included angle is increased when a working force is applied; and when the stress disappears, the elastic piece enables the wiping piece to return to the initial position. The included angle between the wiping face and the dust collection opening is adjusted by applying different forces to the suction nozzle, the attaching condition and the contact degree of the dust collection opening, the wiping face and the face to be cleaned are changed, different dust collection and hair removal cleaning effects are achieved, and the suction nozzle can be suitable for the faces to be cleaned made of different materials. And when the wiping surface returns to the initial position, the wiping surface is close to the dust suction port, so that the dust suction port can conveniently suck away hair remaining on the wiping surface or the scraping teeth, and a user does not need to clean the suction nozzle for the second time.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum cleaner nozzles, in particular to a vacuum cleaner nozzle and a small handheld vacuum cleaner. Background Art

[0002] With the development of science and technology and the improvement of living standards, pet owners have higher requirements for the cleanliness of their living environment. They need cleaning tools that can not only clean the hair and nail fragments that fall off naturally from their pets, but also remove dust and debris caused by their pets' activities.

[0003] Among them, pet hair is often the most difficult to clean, because some hair will get stuck in or entangled in the fibers of fabric products, and the suction power of the vacuum cleaner can only clean the hair floating on the surface of the object, but cannot clean the hair that is stuck in or entangled in the fibers.

[0004] In the prior art, vacuum cleaners are typically equipped with a nozzle equipped with a planted brush or brush roller. The bristles on the brush or brush roller are used to brush pet hair off the surface fibers of fabric products, and then the vacuum cleaner's suction force draws the hair into the dust collection bin. However, when the nozzle is in use, the hair easily becomes entangled in the brush roller or remains between the bristles of the planted brush, requiring the user to manually clean the brush or brush roller a second time, which is extremely inconvenient.

[0005] For example, Chinese patent document (CN 208709759 U) provides a cleaning tool and a vacuum cleaner having the same, which has a hair-cutting device added to the nozzle. The nozzle has a relatively complex structure and high production and assembly costs. At the same time, a more complex structure often means a larger volume and heavier mass, which reduces the flexibility and portability of the vacuum cleaner nozzle.

[0006] For example, Chinese patent documents (CN 217118289 U, CN 216776868 U, CN 219460040 U) all provide a suction nozzle with rubber brush teeth, which uses the viscosity of the rubber itself and the combing effect of the brush teeth on the fibers to remove hair. However, the above patents directly fix the brush teeth around the suction port, and the relative position and relative height of the brush teeth and the suction port remain unchanged. Moreover, compared with the bristle brush, the deformation ability of the rubber brush teeth is also worse, so it is difficult to adapt to the surfaces to be cleaned of different materials.

[0007] Specifically, when the nozzle is used on surfaces with varying hardness and elasticity, such as those with long pile, dense pile, or deeply textured surfaces, the bristles can easily misalign with the surface, resulting in poor dust collection or hair removal. For another example, when cleaning leather or smooth fabric, the bristles can easily rub excessively, damaging the surface.

[0008] In addition, in the prior art, the wiping surface where the rubber brush teeth are located is usually parallel to the suction port and forms an angle of 90° to 120° with the dust suction duct. When the vacuum cleaner is working, the suction force in the dust suction duct will drop significantly after a large turn of 90° to 120°, resulting in the hair entangled on the brush teeth being difficult to be directly sucked away by the suction force. The user still needs to manually remove the hair on the brush teeth here, which is inconvenient to use. Utility Model Content

[0009] In order to solve the problems that the brush teeth in the existing suction nozzle are difficult to adapt to the surfaces to be cleaned of different materials and the suction port is difficult to suck away the hair entangled on the brush teeth, the purpose of the utility model is to provide a vacuum cleaner nozzle and a small handheld vacuum cleaner.

[0010] The technical solution provided by this utility model is:

[0011] In a first aspect, a vacuum cleaner nozzle comprises:

[0012] The nozzle body is provided with a dust suction air duct, one end of which is a dust suction port;

[0013] An elastic member, which is located on one side of the suction port and connected to the suction nozzle body;

[0014] A wiping member connected to the elastic member, the side of the wiping member facing the suction port being a wiping surface, and the wiping surface being provided with soft rubber scraping teeth;

[0015] The suction port and the wiping surface form an angle;

[0016] When the wiping piece is in the initial position, the angle range is 90° to 155°; when it is subjected to working force, the angle increases; when the force disappears, the elastic piece is used to provide elastic force for the wiping piece to return to the initial position.

[0017] As an optional technical solution of the first aspect, the width of the wiping surface is 5 to 25 mm.

[0018] Optionally, the soft rubber scraping teeth are tapered teeth and / or saw teeth arranged in an array;

[0019] The angle between the soft rubber scraping teeth and the normal line of the wiping surface is 0 to 25 degrees.

[0020] Optionally, the soft rubber scraping teeth are not higher than 10mm, and the spacing is 2 to 5mm; if they are serrated, the spacing between the serrated teeth is 1 to 2.5mm; or, the spacing between the serrated teeth gradually decreases from the side close to the dust suction port to the side away from the dust suction port, the spacing between the serrated teeth close to the dust suction port is 2.5 to 4mm, and the spacing between the serrated teeth away from the dust suction port is 0.8 to 2.5mm.

[0021] Optionally, the soft rubber scraping teeth are conical teeth, the tooth height of the conical teeth is 1 to 3.5 mm, and the tooth spacing of the conical teeth is 2 to 5 mm.

[0022] Optionally, the soft rubber scraping teeth are inclined toward the side close to the dust suction port, and the angle between the soft rubber scraping teeth and the normal line of the wiping surface is 15° to 25°.

[0023] Optionally, the soft rubber scraping teeth close to the dust suction port are conical teeth, and the soft rubber scraping teeth away from the dust suction port are saw teeth, and the tooth spacing of the saw teeth is smaller than the tooth spacing of the conical teeth.

[0024] As an optional technical solution of the first aspect, the elastic member is in sheet form and made of elastic soft rubber material, wherein:

[0025] The elastic member is a sheet-like structure integrally formed with the wiping member, and its material is one of TPR, TPE, TPU, silicone, and natural rubber; the thickness of the sheet-like structure perpendicular to the wiping surface is 2 to 6 mm.

[0026] Alternatively, the elastic member is integrally formed with the nozzle body, and the material thereof is ABS, PC or PP.

[0027] Optionally, the sheet structure is provided with a plug strip near one end of the nozzle body; the nozzle body is provided with a mounting groove, the top size of the mounting groove is larger than its opening size, and the plug strip can be inserted and removed from the mounting groove from the end face of the nozzle body.

[0028] Optionally, a top pressure plate is connected to the suction nozzle body, and a slot is formed between the top pressure plate and the suction nozzle body, and the root of the sheet structure is located in the slot; a buckle is hinged on the suction nozzle body through a first connecting axis, and the buckle is provided with a limiting rib; when the buckle is buckled, the limiting rib presses against the top pressure plate, so that the top pressure plate presses the sheet structure.

[0029] Optionally, the top pressure plate is connected to the nozzle body via a thin sheet, and the thin sheet can be deformed relative to the nozzle body; or, the top pressure plate is hinged to the nozzle body via a second connecting shaft.

[0030] Optionally, the sheet structure is integrally formed with the nozzle body by secondary injection molding.

[0031] Optionally, the wiping surface is tilted relative to its root, tilted toward the side away from the suction port, and the tilt angle is 20° to 40°.

[0032] As an optional technical solution of the first aspect, the elastic member and the wiping member are separate structures, one end of the elastic member is connected to the suction nozzle body, and the other end is against the wiping member to keep the wiping member in its initial position.

[0033] Optionally, a third connecting shaft is installed on the suction nozzle body, and the scraper bracket is hinged to the suction nozzle body through the third connecting shaft; the wiper can be detachably connected to the scraper bracket;

[0034] The elastic member is a torsion spring installed on the third connecting shaft, and the torsion spring is respectively against the suction nozzle body and the scraper bracket.

[0035] Optionally, the elastic member is a spring, and one side of the spring is fixed to the nozzle body;

[0036] The wiping piece is screwed or riveted to the other side of the spring sheet; or the spring sheet is provided with an insertion hole, and the wiping piece is clamped with the other side of the spring sheet through the insertion hole.

[0037] In a second aspect, a small handheld vacuum cleaner comprises the vacuum cleaner nozzle of the first aspect or any one of the technical solutions of the first aspect.

[0038] Compared with the prior art, the technical solution provided by this utility model has the following beneficial effects:

[0039] The wiping member in the present invention is connected to the elastic member so that an angle is formed between the wiping member and the dust suction port. When the vacuum cleaner is in operation, the user can adjust the angle between the wiping surface and the dust suction port by applying different amounts of force to the suction nozzle according to the material of the surface to be cleaned, thereby changing the fit between the dust suction port and the surface to be cleaned, and the degree of contact between the wiping surface and the surface to be cleaned, so as to achieve different dust suction and hair removal cleaning effects, making the suction nozzle suitable for surfaces to be cleaned of different materials. In addition, when the suction nozzle is no longer subjected to force or is separated from the surface to be cleaned, the wiping surface returns to its original position under the elastic force of the elastic member, close to the dust suction port, making it easier for the dust suction port to suck away the hair remaining on the wiping surface or scraping teeth, so that the user does not need to clean the suction nozzle twice.

[0040] Compared to existing vacuum cleaner nozzles for cleaning pet hair, this utility model has the advantages of simple structure, compact size, simple processing, low cost, light and convenient use, and a wide range of applicable scenarios. It is particularly suitable for use with small handheld vacuum cleaners. In addition, due to its simple principle, the utility model can also be combined with other types of vacuum cleaner nozzles to solve the problem that other vacuum cleaner nozzles have difficulty cleaning pet hair, such as the nozzles of mite removal vacuum cleaners, pet hair vacuums, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 This is a schematic diagram of a buckle being fastened in one embodiment of the present application;

[0042] Figure 2 This is a schematic diagram of a nozzle in a usage state in one embodiment of the present application;

[0043] Figure 3 This is a schematic diagram of the nozzle in another usage state according to an embodiment of the present application;

[0044] Figure 4 This is a schematic diagram of the buckle being opened in one embodiment of the present application;

[0045] Figure 5 This is a schematic diagram of an embodiment of the present application when the buckle is opened and the sheet structure is pulled out;

[0046] Figure 6 This is a schematic diagram of a sheet structure being fixed by a top pressure plate in one embodiment of the present application;

[0047] Figure 7 This is a partial cross-sectional view of the nozzle when the buckle is opened in one embodiment of the present application;

[0048] Figure 8 This is an exploded view of the nozzle when the top pressure plate is connected to the nozzle body through a thin sheet in one embodiment of the present application;

[0049] Figure 9 This is an exploded view of the nozzle when the top pressure plate is connected to the nozzle body through the second connecting shaft in one embodiment of the present application;

[0050] Figure 10 This is a schematic diagram of an embodiment of the present application in which the elastic member is a torsion spring;

[0051] Figure 11 This is a schematic diagram of the connection between the wiper and the scraper bracket in one embodiment of the present application;

[0052] Figure 12 This is a schematic diagram of an embodiment of the present application in which the elastic member is a spring;

[0053] Figure 13 This is a schematic diagram of the spring structure in one embodiment of the present application;

[0054] Figure 14 This is a schematic diagram of an embodiment of the present application in which the sheet structure and the nozzle body are integrally formed by secondary injection molding;

[0055] Figure 15 This is a schematic diagram of an embodiment of the present application in which the sheet-like structure is connected to the nozzle body via a plug strip;

[0056] Figure 16 This is a schematic diagram of an embodiment of the present application in which the soft rubber scraping teeth are saw teeth;

[0057] Figure 17 This is a schematic diagram of an embodiment of the present application in which the soft rubber scraping teeth are saw teeth and conical teeth;

[0058] Figure 18 This is a schematic diagram of a tapered tooth tilted in one embodiment of the present application;

[0059] Figure 19 This is a schematic diagram of an embodiment of the present application in which the wiping surface is tilted relative to its root.

[0060] Explanation of the numbers in the schematic diagram:

[0061] Suction nozzle body 101, suction port 102, suction duct 103, surface to be cleaned 104;

[0062] Wiping element 200, soft rubber scraping teeth 201, saw teeth 201-1, conical teeth 201-2, wiping surface 202;

[0063] Elastic member 301, torsion spring 301-1, sheet structure 301-2, spring piece 301-3;

[0064] Plug strip 401, mounting groove 402;

[0065] Anti-slip pattern 501, second connecting shaft 502, buckle 503, first connecting shaft 504, top pressure plate 505, slot 506, limiting rib 507, sheet 508;

[0066] Socket 601, connecting plate 602;

[0067] The third connecting shaft 701 and the scraping bracket 702 . DETAILED DESCRIPTION

[0068] In order to further understand the content of the present invention, the present invention is described in detail with reference to the accompanying drawings and embodiments.

[0069] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for understanding and reading by those familiar with this technology. They are not used to limit the conditions for implementation of the present invention and therefore have no substantial technical significance. Any modification of the structure, change in the proportion relationship, or adjustment of the size should still fall within the scope of the technical content disclosed by the present utility model without affecting the efficacy and purpose of the present invention. At the same time, terms such as "upper", "lower", "left", "right", and "middle" quoted in this specification are only for the convenience of description and are not used to limit the scope of implementation. Changes or adjustments in their relative relationships should also be considered as the scope of implementation of the present invention without substantially changing the technical content.

[0070] In one embodiment, the present invention provides a vacuum cleaner nozzle, comprising a nozzle body 101, an elastic member 301, and a wiper 200. The nozzle body 101 is hollow, forming a dust suction duct 103, one end of the dust suction duct 103 is a dust suction port 102, and the other end is connected to a small handheld vacuum cleaner.

[0071] The elastic member 301 is located on one side of the suction port 102 and is connected to the nozzle body 101. The wiping member 200 is connected to the elastic member 301. The side of the wiping member 200 facing the suction port is a wiping surface 202, and the wiping surface 202 is provided with soft rubber scraping teeth 201.

[0072] When the wiping member 200 is in the initial position, that is, when the suction nozzle is not subjected to a force directed toward the surface to be cleaned 104, an angle n is formed between the suction port 102 and the wiping surface 202. The value of n ranges from 90° to 155°, for example, 90°, 135°, or 140°. When the suction nozzle is in operation, a force directed toward the surface to be cleaned 104 can be applied to the suction nozzle, increasing the angle n. At the same time, the contact area, interaction force, frictional force, and suction force between the suction port 102 and the surface to be cleaned 104, and between the wiping member 200 and the surface to be cleaned 104, are increased. When the suction nozzle is lifted away from the surface to be cleaned 104, the suction nozzle is no longer subjected to the force toward the surface to be cleaned 104. At this time, the force disappears, and the elastic member 301 can provide the elastic force for the wiping member 200 to return to its initial position. That is, at this time, the wiping member 200 is deflected toward the side of the dust suction port 102, and the angle n is restored to the size when the wiping member 200 is in the initial position. At this time, the wiping surface 202 is close to the dust suction port 102, and has a smooth transition or obtuse angle with the dust suction duct 103. The wind resistance is small and the suction loss is small. The suction at the dust suction duct 103 and the dust suction port 102 can effectively cover the entire wiping surface 202, and the hair remaining on the wiping surface 202 and the soft rubber scraping teeth 201 are sucked away.

[0073] In a specific application, the elastic member 301 can be made of rubber, flat, and integrally formed with the wiper 200 or the nozzle body 101. The elasticity or toughness of the rubber itself is used to replace the independent elastic member to simplify the nozzle structure, reduce parts, and reduce production and assembly costs.

[0074] When the elastic member 301 and the wiping member 200 are integrally formed, the elastic member 301 is a sheet structure 301-2. The thickness of the sheet structure 301-2 perpendicular to the wiping surface 202 is 2 to 6 mm. The material thereof can be the same as the material of the soft rubber scraping teeth, which is an elastic soft rubber material, such as TPR, TPE, TPU, silicone, or natural rubber. The elasticity of the soft rubber material itself is utilized to act as an elastic member.

[0075] When the elastic member 301 is integrally formed with the nozzle body 101 , the elastic member 301 is in the form of a flat sheet or a curved sheet with a thickness of 1-2.5 mm. The material may be ABS, PC, PP or the like.

[0076] When the elastic member 301 is a sheet structure 301-2, the wiping member 200 is a part of the sheet structure 301-2, and the side of the sheet structure 301-2 facing the suction port is the wiping surface 202. The connection method between the sheet structure 301-2 and the nozzle body 101 can refer to the following embodiments:

[0077] Example 1 of the arrangement method when the elastic member is a sheet structure

[0078] Because the soft rubber scraping teeth 201 continuously rub against the surface to be cleaned 104 during operation, and the wear resistance of soft rubber materials is generally poor, the soft rubber scraping teeth 201 will wear and become shorter after a period of use, resulting in a poor scraping effect. Therefore, in order to extend the service life of the nozzle, this embodiment provides a connection method that is easy to disassemble and install, and after installation, the sheet structure 301-2 can be clamped by a snap fastening.

[0079] In this embodiment, if Figure 1 、 4 -9, a top pressure plate 505 is connected to the nozzle body 101, and a slot 506 is formed between the top pressure plate 505 and the nozzle body 101. The slot 506 is provided with an opening for the sheet structure 301-2 to be inserted, and the root of the sheet structure 301-2 is located in the slot 506. Here, the root of the sheet structure 301-2 refers to the part of the sheet structure 301-2 close to the nozzle body 101, that is, the end of the sheet structure 301-2 close to the nozzle body 101 is inserted into the slot 506.

[0080] The nozzle body 101 is hinged with a buckle 503 via a first connecting shaft 504, and the buckle 503 is provided with a limiting rib 507. Figure 1 、 6 As shown, when the buckle 503 is buckled, the limiting rib 507 presses against the top pressure plate 505, reducing the distance between the upper groove wall and the lower groove wall of the slot 506. The top pressure plate 505 presses the sheet structure 301-2, that is, presses the end of the sheet structure 301-2 close to the suction nozzle body 101. At this time, the sheet structure 301-2 will not fall off the suction nozzle body 101.

[0081] like Figure 4 、 5 As shown in Figure 7, when the buckle 503 is pulled to make the buckle 503 tilt up, the limiting rib 507 does not press against the top pressure plate 505, and a gap is formed between the sheet structure 301-2 and the groove wall of the slot 506. At this time, the sheet structure 301-2 can be pulled out, thereby replacing the worn elastic part and the wiping piece 200, or replacing the wiping piece 200 with different shapes and different soft rubber scraping teeth 201 solutions according to different usage scenarios and hair removal requirements to further improve the use effect.

[0082] Optionally, in order to improve the stability of the sheet structure 301-2, anti-slip grooves 501 can be provided on the sheet structure 301-2 inserted into the slot 506, or anti-slip grooves can be provided on the groove wall of the slot 506, thereby increasing the friction between the sheet structure 301-2 and the slot 506, thereby preventing the sheet structure 301-2 from falling off the nozzle body 101 when the nozzle moves along the surface to be cleaned 104.

[0083] Preferably, if Figure 1 、6 As shown in Figures 8 and 9, a number of reinforcing ribs are provided on the top pressure plate 505 to increase the structural strength of the top pressure plate 505, so that the top pressure plate 505 is not easily deformed, and the pressure when the limiting rib 507 is pressed against the top pressure plate 505 can be evenly distributed on the entire top pressure plate 505, thereby improving the clamping effect of the slot 506 on the sheet structure 301-2, and preventing the sheet structure 301-2 from partially detaching from the nozzle body 101 when the nozzle moves along the surface to be cleaned 104.

[0084] As an alternative, Figure 8 As shown, a thin sheet 508 extends from each end of the top pressure plate 505, which is connected to the nozzle body 101 through the thin sheet 508. The specific connection method can be snap connection, tight fit, or the thin sheet 508 is integrally formed with the nozzle body 101 and the top pressure plate 505. When the thin sheet 508 is integrally formed with the nozzle body 101 and the top pressure plate 505, see Figure 6 , Figure 6 The dotted box is the thin sheet 508. The thin sheet 508 is made of a sheet of hard plastic material, such as ABS or PC. The sheet shape enables the thin sheet 508 to have a certain degree of deformation ability and elasticity by utilizing the hardness and toughness of the material itself. When the buckle 503 is fastened, the limiting rib 507 presses the top pressure plate 505, and the thin sheet 508 is deformed by the force. The relative position of the top pressure plate 505 and the suction nozzle body 101 changes, and the distance between the upper groove wall and the lower groove wall of the slot 506 becomes smaller. The distance is less than or equal to the thickness of the sheet structure 301-2, so that the slot 506 can clamp the sheet structure 301-2. When the buckle 503 is fastened, as shown Figure 6 In the depth direction of the slot 506 , a portion of the sheet structure 301 - 2 is located on both sides of the limiting rib 507 , so that the top pressure plate 505 maintains internal and external pressure balance.

[0085] As another option, Figure 9 As shown, the top pressure plate 505 is provided with an extension portion, which is hinged to the nozzle body 101 via the second connecting shaft 502. The upper end of the extension portion is a buckle 503, and its lower end forms a slot 506 with the nozzle body 101, into which a portion of the sheet structure 301-2 can be inserted.

[0086] When using this embodiment, the user can adjust the angle between the wiping surface 202 and the suction port 102 by applying different amounts of force to the suction nozzle according to the material of the surface to be cleaned, change the fit between the suction port 102 and the surface to be cleaned 104, and the degree of contact between the wiping surface 202 and the surface to be cleaned 104, so as to achieve different dust suction and hair removal cleaning effects, so that this suction nozzle can be suitable for surfaces 104 to be cleaned with different materials.

[0087] Specifically, when the surface to be cleaned 104 is a relatively thin fiber product such as a bed sheet or clothing, the suction port 102 can be placed lightly against the surface to be cleaned 104. Figure 2 As shown, at this point, the angle between the nozzle body 101 and the surface to be cleaned 104 is approximately 29°, the angle between the wiping surface 202 and the surface to be cleaned 104 is approximately 27°, and the angle n formed between the suction port 102 and the wiping surface 202 is approximately 100°. Only the row of soft rubber scraping teeth 201 on the wiping surface 202, away from the suction port, is in contact with the surface to be cleaned 104. Because there are significant gaps around the suction port 102 and it doesn't fully contact the surface to be cleaned 104, the suction force is relatively weak. This makes it difficult for thin fabrics to be drawn into the suction port and cause clogging. Because thin fabrics typically have a relatively flat and smooth surface, pet hair tends to adhere less firmly to the surface to be cleaned 104. Therefore, the wiping surface 202 only partially contacts the surface to be cleaned 104, and the suction port only provides a small suction force, which is sufficient to remove hair from thin fabrics without damaging the surface to be cleaned 104.

[0088] When the surface to be cleaned 104 is a fabric product with thin velvet, medium thickness or slight texture, a larger force can be applied to the nozzle toward the surface to be cleaned 104, such as Figure 3 As shown, at this time, the angle between the nozzle body 101 and the surface to be cleaned 104 is expanded to about 43°, the soft rubber scraping teeth 201 are supported by the surface to be cleaned 104, and the elastic member 301 is forced to flip in the direction away from the suction port 102, and the angle between the wiping surface 202 and the surface to be cleaned 104 is reduced to about 18°, and the angle n between the wiping surface 202 and the suction port 102 is expanded to about 115°. At this time, the two rows of soft rubber scraping teeth 201 on the wiping surface 202 away from the suction port 102 are in contact with the surface to be cleaned 104, and the suction port 102 is also more closely fitted to the surface to be cleaned 104. At this time, the suction force of the suction port 102 on the surface to be cleaned 104 is strengthened, and the friction between the soft rubber scraping teeth 201 and the surface to be cleaned 104 is also strengthened when the nozzle moves, which can more effectively brush the hair adhering to and entangled on the surface to be cleaned 104 onto the scraping teeth.

[0089] If the surface to be cleaned 104 is a fabric product with thick velvet, thickness or obvious surface texture, the force applied to the nozzle toward the surface to be cleaned 104 can be further increased. At this time, the angle between the nozzle body 101 and the surface to be cleaned 104 will continue to expand. The angle between the wiping surface 202 and the surface to be cleaned 104 continues to decrease until it is almost parallel to the surface to be cleaned 104. The angle n between the wiping surface 202 and the dust suction port 102 will also continue to expand. At this time, the suction force of the dust suction port 102 on the surface to be cleaned 104 reaches the strongest, and the dust and debris on the surface to be cleaned 104 can be sucked away to the greatest extent. Almost all of the soft rubber scraping teeth 201 on the wiping surface 202 are in contact with the surface to be cleaned 104, and the friction between the soft rubber scraping teeth 201 and the surface to be cleaned 104 also reaches the maximum. The soft rubber scraping teeth 201 can also brush away the hair adhered to the surface to be cleaned 104 to the greatest extent.

[0090] When the suction nozzle is lifted, the wiping member 200 will return to its initial position under the elastic force of the elastic member 301, that is, it will deflect toward the suction port, the angle n will decrease, the wiping surface 202 will be close to the suction port 102, and it will form a smooth transition or obtuse angle with the suction duct 103. When the air flows through the wiping surface 202 and enters the suction duct 103, the wind resistance is small and the suction loss is small. The suction force at the suction duct 103 and the suction port 102 can effectively cover the entire wiping surface 202, and the hair remaining on the wiping surface 202 and the soft rubber scraping teeth 201 will be sucked away. Example 2 of the setting method when the elastic member is a sheet structure

[0091] like Figure 15 As shown, the sheet structure 301-2 has a plug 401 at one end near the nozzle body 101. The plug 401 can have a circular or polygonal cross-section. The nozzle body 101 has a mounting slot 402. The plug 401 can be inserted and removed from the end face of the nozzle body 101. This allows the wiper 200 to be replaced after wear. Alternatively, the wiper 200 can be replaced with a different shape and soft rubber scraping teeth 201 to further improve the use experience according to different usage scenarios and hair removal needs.

[0092] It should be noted that the length of the mounting groove 402 extends perpendicular to the direction in which the nozzle moves during cleaning, and the plug 401 can be inserted into or removed from the mounting groove 402 from both ends of the mounting groove 402. The mounting groove 402 has an opening for the sheet structure 301-2 to extend out, and the size of this opening is smaller than the size of the plug 401, that is, the top size of the mounting groove 402 is larger than the size of its opening. This prevents the sheet structure 301-2 from falling off the nozzle body 101 when the nozzle moves along the surface to be cleaned 104.

[0093] Compared to the previous embodiment, this embodiment has a simpler structure, further reducing production and assembly costs. However, the mounting groove 402 and plug 401 of this embodiment are visible from the outside of the nozzle, which has a certain impact on the nozzle's appearance design. It is generally suitable for mid- and low-end products.

[0094] Example 3 of the arrangement method when the elastic member is a sheet structure

[0095] In this embodiment, if Figure 14 As shown, the sheet structure 301-2 can be integrally formed with the nozzle body 101 through secondary injection molding. In this solution, although the wiper 200 and elastic member cannot be removed and replaced, when market demand is high, the nozzle can be fully automatically produced using a two-color mold and a two-color injection molding machine, eliminating the need to assemble the elastic member and wiper 200 into the nozzle, thereby improving production efficiency. Furthermore, this embodiment has a simple structure and takes up little space, making it relatively easy to combine with other nozzle designs. The sheet structure 301-2 and soft rubber scraper 201 replace traditional brushes or delinting cloths, improving the delinting effect of other nozzle types.

[0096] In addition to the above three embodiments, the elastic member 301 can also be independently provided with the wiping member 200, that is, the elastic member 301 and the wiping member 200 are split structures, one end of the elastic member 301 is connected to the nozzle body 101, and the other end is against the wiping member 200, which is used to provide an elastic force for the wiping member 200 to return to its initial position. As an optional solution, the wiping member 200 is detachably connected to the elastic member 301, so that the wiping member 200 can be replaced independently. In addition, using a conventional metal spring or metal shrapnel as the elastic member 301, the resilience of the elastic member 301 is more uniform, and the strength and elasticity of the elastic member 301 are not affected by the wiping member 200, making it easier to adjust the feel of use. At this time, the connection method of the elastic member 301 with the wiping member 200 and the nozzle body 101 can refer to the following embodiments.

[0097] Example 1 of the arrangement method when the elastic member and the wiping member are designed separately

[0098] like Figure 10 、 11 As shown, a scraper bracket 702 is mounted on the nozzle body 101. Specifically, a third connecting shaft 701 is mounted on the nozzle body 101, and the scraper bracket 702 is hinged to the nozzle body 101 via the third connecting shaft 701. The elastic member 301 is a torsion spring 301-1 mounted on the third connecting shaft 701, and the torsion spring 301-1 is respectively against the nozzle body 101 and the scraper bracket 702.

[0099] The wiper 200 is connected to the scraper bracket 702. The wiper 200 can be detachably connected to the scraper bracket 702, such as by screws or snaps, so that the wiper 200 can be replaced separately. The wiper 200 can also be fixedly connected to the scraper bracket 702, such as by bonding, so that the scraper bracket 702 needs to be replaced when the wiper 200 is replaced.

[0100] When a force is applied to the suction nozzle toward the surface to be cleaned 104, the angle n between the wiping element 200 and the suction port 102 increases, and the torsion spring 301-1 twists. When the force applied to the suction nozzle toward the surface to be cleaned 104 decreases, or when no force is applied to the suction nozzle toward the surface to be cleaned 104, the torsion spring 301-1 applies an elastic force to the scraping tooth bracket 702, thereby returning the wiping element 200 to its initial position. At this time, the hair on the scraping teeth is sucked away by the suction port 102.

[0101] Example 2 of the arrangement method when the elastic member and the wiping member are designed separately

[0102] In this embodiment, if Figure 12 、 13 As shown, the elastic member 301 is a spring 301-3, one side of which is fixed to the nozzle body 101. The spring 301-3 can be made of metal, such as stainless steel, etc., which is not limited here. It should be noted that the thickness of the metal spring 301-3 needs to ensure that the spring 301-3 can be elastic.

[0103] As an optional solution, the spring piece 301-3 is provided with a socket 601 and several positioning ribs. The wiper 200 is provided with an insert corresponding to the socket 601, thereby achieving a detachable connection between the wiper 200 and the other side of the spring piece 301-3. In this way, the wiper 200 can be replaced with a new one when it is severely worn.

[0104] It should be noted that the wiper 200 may also be screwed or riveted to the other side of the elastic piece 301 - 3 .

[0105] The connection between the spring clip 301-3 and the nozzle body 101 can be achieved by providing a connecting plate 602 on the spring clip 301-3, with a positioning post hole defined in the connecting plate 602. The nozzle body 101 is provided with a positioning post corresponding to the positioning post hole. During assembly, the positioning post is inserted through the positioning post hole and then heat-pressed. This causes the end of the positioning post to deform due to the heat, reducing its height and increasing its cross-sectional area. This secures the connecting plate 602, thereby connecting the spring clip 301-3 to the nozzle body 101.

[0106] It should be noted that the connecting plate 602 and the nozzle body 101 can also be connected by screws or buckles. This connection method is relatively mature in the prior art and will not be elaborated or limited here.

[0107] In order to improve the cleaning effect of the wiping member 200 on the surface to be cleaned, and also to meet the cleaning requirements of the surface to be cleaned 104 made of various materials.

[0108] Preferably, the wiping surface 202 on the wiper 200 is set to a width of 5 to 25 mm. The width here refers to the distance from the end of the wiping surface 202 closest to the suction port 102 to the end of the wiping surface 202 further away from the suction port 102. If the width is less than 5 mm, only one or two rows of soft rubber scraping teeth 201 can be arranged on the wiping surface 202, resulting in low cleaning efficiency. If the width is greater than 25 mm, the end of the wiping surface 202 further away from the suction port 102 is too far away from the suction port 102, making it difficult for the suction force of the suction port 102 to effectively cover the entire wiping surface 202, which can easily cause hair to remain on the wiping surface 202.

[0109] Alternatively, the soft rubber scraper teeth 201 may be tapered teeth 201-2 arranged in an array, or may be saw teeth 201-1 arranged in an array, or may be a mixture of tapered teeth 201-2 and saw teeth 201-1 arranged in an array. Furthermore, the soft rubber scraper teeth 201 may also be designed in an artistic shape, such as an "8" shape, and then arranged in an array.

[0110] The height of the soft rubber scraping teeth 201 is not higher than 10 mm, and the spacing between each row of soft rubber scraping teeth 201 is 2 to 5 mm, for example, it can be 2.5 mm, or 3 mm, etc. The spacing between the soft rubber scraping teeth 201 should not be too small. Too small a spacing will easily cause hair to be entangled between the scraping teeth, making it difficult for the hair to be sucked away by the suction port 102.

[0111] The soft rubber scraping teeth 201 can be arranged in various types or with different spacings, for example, the soft rubber scraping teeth 201 near the suction port are wider, and the soft rubber scraping teeth 201 away from the suction port are narrower. The user can control the contact between the wiping surface 202 and the surface to be cleaned 104 by applying different pressures to the suction nozzle.

[0112] For example, when the surface to be cleaned 104 is a relatively thin fiber product such as bed sheets or clothing, the nozzle is slightly pressed down so that only the soft rubber scraping teeth 201 on the wiping surface 202 away from the suction port 102 come into contact with the surface to be cleaned 104. Since the soft rubber scraping teeth 201 away from the suction port 102 are spaced the smallest and have the highest density, the efficiency is high and the residue is minimal when cleaning hair attached to the surface of thin and flat fiber products.

[0113] For example, if the surface to be cleaned 104 is a thick fiber product with long lint, such as carpet or velvet, the nozzle can be pressed down with greater force until all the scraping teeth are in contact with the surface to be cleaned. As the nozzle moves, the soft rubber scraping teeth 201 with larger tooth spacing closest to the suction port 102 first comb through the lint on the surface to be cleaned 104, scraping most of the entangled hair onto the scraping teeth. The soft rubber scraping teeth 201 with narrower tooth spacing farther from the suction port 102 then comb through the lint row by row, reducing any remaining hair.

[0114] Regarding the configuration of the soft rubber scraping teeth 201, please refer to the following embodiments:

[0115] Soft Rubber Scraping Example 1

[0116] In this embodiment, the soft rubber scraping teeth 201 are saw teeth 201 - 1 , and the saw tooth height is 0.6 to 1.5 mm, for example, 0.7 mm, or 1.2 mm.

[0117] As an optional solution, the tooth spacing of each row of saw teeth 201 - 1 can be the same, 1 to 2.5 mm, for example, 1.5 mm, or 2.2 mm.

[0118] Preferably, if Figure 16 As shown, the sawtooth spacing gradually decreases from the side close to the dust suction port 102 to the side away from the dust suction port 102, that is, the sawtooth 201-1 density is higher on the side away from the dust suction port 102. Specifically, the sawtooth spacing L1 close to the dust suction port 102 ranges from 2.5 to 4 mm, for example, 3.2 mm, and the sawtooth spacing L2 away from the dust suction port 102 ranges from 0.8 to 2.5 mm, for example, 1.2 mm.

[0119] Soft Rubber Scraping Example 2

[0120] In this solution, the soft rubber scraping teeth 201 are conical teeth 201-2, such as cones, pyramids, truncated cones or prisms. The advantage of conical teeth is that they can collect more hair. The cross-sectional area of ​​the root of the conical tooth 201-2 is larger. The root of the conical tooth 201-2 refers to the end of the conical tooth 201-2 close to the wiping surface. The cross-sectional area of ​​the top of the conical tooth 201-2 is smaller, so that the conical tooth 201-2 remains relatively stiff and not easy to fall when under pressure and moving. The tooth height of the conical teeth is 1 to 10 mm, for example, it can be 1.6 mm, or 2.4 mm, 6.2 mm, 8.4 mm, 10 mm, etc. The tooth spacing of the conical teeth is 2 to 5 mm, for example, it can be 2.6 mm, or 3.2 mm, or 4.8 mm, etc.

[0121] Soft Rubber Scraping Example 3

[0122] like Figure 17As shown, the soft rubber scraping teeth 201 close to the dust suction port 102 are conical teeth 201 - 2 , and the soft rubber scraping teeth 201 away from the dust suction port 102 are saw teeth 201 - 1 , and the saw tooth spacing is smaller than the conical tooth spacing.

[0123] Because serrated scrapers can have relatively small tooth spacing, such as 0.8-2mm, serrated scrapers offer excellent cleaning results and minimal residue when cleaning smooth surfaces with minimal hair. However, the tooth height of serrated scrapers is often very small, approximately 0.6-1.5mm, which means the scrapers can pick up less hair. When cleaning items with a large amount of hair, serrated scrapers are less efficient. Conical scrapers, on the other hand, have larger tooth spacing, typically 2-5mm, and a higher tooth height, typically 1-10mm. Therefore, conical scrapers can collect more hair. However, because conical scrapers typically have wider tooth spacing, some areas of the surface to be cleaned 104 are not accessible to the brush teeth when combing, resulting in a high amount of hair residue on the surface to be cleaned 104. Therefore, combining the respective advantages of conical and serrated scrapers, several rows of conical scrapers are provided on the side close to the suction port, and one or two rows of serrated scrapers are provided on the side away from the suction port. When working, move the suction nozzle so that the conical scraping teeth first brush the surface to be cleaned 104, and then the serrated scraping teeth brush the surface to be cleaned 104. Use the conical scraping teeth to quickly clean a large amount of hair, and then use the serrated scraping teeth to reduce the residual hair, thereby making the hair removal effect better and more efficient.

[0124] Soft Rubber Scraping Example 4

[0125] In this embodiment, the angle between the soft rubber scraping teeth 201 and the normal to the wiping surface 202 is 0 to 25 degrees. When the angle between the soft rubber scraping teeth 201 and the normal to the wiping surface 202 is 0 degrees, the soft rubber scraping teeth 201 are perpendicular to the wiping surface 202. When the soft rubber scraping teeth 201 are tilted toward the suction port 102, the angle between the soft rubber scraping teeth 201 and the normal to the wiping surface 202 is greater than 0 degrees.

[0126] Specifically, please refer to Figure 18 The conical teeth 201-2 are tilted toward the suction port 102, and the angle between the axis of the conical teeth and the normal of the wiping surface 202 is 15° to 25°, that is, the angle m between the axis of the conical teeth 201-2 and the wiping surface 202 is 65° to 75°. By tilting the conical teeth 201-2 toward the suction port, the scraping teeth can act like hooks to remove hair from the surface 104 to be cleaned during operation, improving cleaning efficiency. At the same time, after the operation is completed, the wiping element 200 is reset by the elastic member. Since the conical teeth 201-2 are tilted toward the suction port 102, their hair-blocking effect is weaker, and hair adhering to the conical teeth 201-2 is more easily sucked into the suction port 102.

[0127] Soft Rubber Scraping Example 5

[0128] In this plan, if Figure 19 As shown, the wiping surface 202 is tilted relative to its root, where the root refers to the end of the wiping surface 202 close to the suction port 102. Specifically, the wiping surface 202 is tilted toward the side away from the suction port 102, and the tilt angle k is 20° to 40°. At the same time, the soft rubber scraping teeth 201 remain perpendicular to the wiping surface 202.

[0129] Because the specific design of the suction nozzle needs to match the suction force of the vacuum cleaner, and vacuum cleaners with lower suction force require a higher degree of fit of the suction port 102 during operation, the wiping surface 202 is tilted 20° to 40° relative to the root, so that when the wiper 200 is in the initial position, the angle n between the wiping surface 202 and the suction port 102 is between 120° and 155°. This ensures that no matter how strong or weak the suction force on the nozzle is, only a small gap remains between the suction port 102 and the surface to be cleaned 104. Even with a lower suction force, the dust and debris that enter the coverage area of ​​the suction port 102 can be effectively sucked away.

[0130] Compared to existing vacuum cleaner nozzles for cleaning pet hair, the nozzle of the present invention has the advantages of simple structure, compact size, simple processing, low cost, light and convenient use, and a wide range of applicable scenarios. It is particularly suitable for use with small handheld vacuum cleaners. In addition, due to the simple principle of the present invention, it can also be combined with other types of vacuum cleaner nozzles to solve the problem that other vacuum cleaner nozzles have difficulty cleaning pet hair, such as the nozzles of mite removal vacuum cleaners, pet hair vacuums, etc.

[0131] In another embodiment, the present invention further provides a small handheld vacuum cleaner comprising the vacuum cleaner nozzle described in any of the above embodiments. After the vacuum cleaner motor is turned on, hair, debris, etc. sucked in by the nozzle enters the dust collection bin through the air duct.

[0132] The above is a schematic description of the present invention and its embodiments, which is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by this and, without departing from the inventive purpose of the present invention, designs a structure and embodiment similar to the technical solution without inventiveness, they shall fall within the scope of protection of the present invention.

Claims

1. A vacuum cleaner nozzle, characterized in that: include: The nozzle body (101) is provided with a dust suction duct (103), one end of the dust suction duct (103) is a dust suction port (102); An elastic member (301) is located on one side of the suction port (102) and is connected to the suction nozzle body (101); A wiping member (200) is connected to the elastic member (301), and the side of the wiping member (200) facing the dust suction port is a wiping surface (202), and the wiping surface (202) is provided with soft rubber scraping teeth (201); The suction port (102) and the wiping surface (202) form an angle; When the wiping member (200) is in the initial position, the angle range is 90° to 155°; when subjected to working force, the angle between the wiping surface (202) and the dust suction port (102) increases; the elastic member is used to provide elastic force for the wiping member (200) to return to the initial position.

2. The vacuum cleaner nozzle according to claim 1, characterized in that: The width of the wiping surface (202) is 5 to 25 mm.

3. The vacuum cleaner nozzle according to claim 1, characterized in that: The soft rubber scraping teeth (201) are tapered teeth (201-2) and / or saw teeth (201-1) arranged in an array; The angle between the soft rubber scraping teeth (201) and the normal line of the wiping surface (202) is 0 to 25 degrees.

4. The vacuum cleaner nozzle according to claim 3, characterized in that: The soft rubber scraping teeth (201) are no higher than 10 mm and have a spacing of 2 to 5 mm; If a sawtooth (201-1) structure is used, the sawtooth spacing is 1 to 2.5 mm; or, the sawtooth spacing gradually decreases from the side close to the dust suction port (102) to the side away from the dust suction port (102), with the sawtooth spacing close to the dust suction port (102) being 2.5 to 4 mm and the sawtooth spacing away from the dust suction port (102) being 0.8 to 2.5 mm.

5. The vacuum cleaner nozzle according to claim 1, characterized in that: The soft rubber scraping teeth close to the dust suction port (102) are conical teeth (201-2), and the soft rubber scraping teeth away from the dust suction port (102) are saw teeth (201-1), and the saw tooth spacing is smaller than the conical tooth spacing.

6. The vacuum cleaner nozzle according to any one of claims 1 to 5, characterized in that: The elastic member is a sheet-like structure (301-2) integrally formed with the wiping member (200), and the thickness of the sheet-like structure (301-2) perpendicular to the wiping surface (202) is 2 to 6 mm.

7. The vacuum cleaner nozzle according to claim 6, characterized in that: The sheet structure (301-2) is provided with a plug (401) at one end close to the nozzle body (101); The nozzle body (101) is provided with a mounting groove (402), the top size of the mounting groove (402) is larger than the opening size thereof, and the plug strip (401) can be inserted and removed from the mounting groove (402) from the end surface of the nozzle body (101).

8. The vacuum cleaner nozzle according to claim 6, characterized in that: A top pressure plate (505) is connected to the nozzle body (101), a slot (506) is formed between the top pressure plate (505) and the nozzle body (101), and the root of the sheet structure (301-2) is located in the slot (506); A buckle (503) is hinged on the nozzle body (101), and the buckle (503) is provided with a limiting rib (507); When the buckle (503) is buckled, the limiting rib (507) presses against the top pressure plate (505), so that the top pressure plate (505) presses the sheet structure (301-2).

9. The vacuum cleaner nozzle according to claim 8, characterized in that: The top pressure plate (505) is connected to the nozzle body (101) via a thin sheet (508), and the thin sheet (508) is deformable relative to the nozzle body (101); Alternatively, the top pressure plate (505) is hinged to the nozzle body (101) via a connecting shaft.

10. The vacuum cleaner nozzle according to claim 6, characterized in that: The wiping surface (202) is tilted relative to its root, tilted toward the side away from the dust suction port (102), and the tilt angle is 20° to 40°.

11. The vacuum cleaner nozzle according to claim 6, characterized in that: The sheet structure (301-2) is made of the same material as the soft rubber scraping teeth (201), which is one of TPR, TPE, TPU, silica gel, and natural rubber.

12. The vacuum cleaner nozzle according to any one of claims 1 to 5, characterized in that: The elastic member (301) and the wiping member (200) are separate structures. One end of the elastic member (301) is connected to the nozzle body (101), and the other end is against the wiping member (200) to keep the wiping member (200) in its initial position.

13. The vacuum cleaner nozzle according to claim 12, characterized in that: A third connecting shaft (701) is installed on the suction nozzle body (101), and the scraper bracket (702) is hinged to the suction nozzle body (101) via the third connecting shaft (701); The wiping member (200) is connected to the scraping bracket (702); The elastic member (301) is a torsion spring (301-1) mounted on the third connecting shaft (701), and the torsion spring (301-1) is respectively against the suction nozzle body (101) and the scraping tooth bracket (702).

14. The vacuum cleaner nozzle according to claim 12, characterized in that: The elastic member (301) is a spring sheet (301-3), and one side of the spring sheet (301-3) is fixed on the nozzle body (101); The wiping member (200) is screwed or riveted to the other side of the elastic sheet (301-3); or: The spring piece (301-3) is provided with an insertion hole, and the wiping piece (200) is clamped with the other side of the spring piece (301-3) through the insertion hole.

15. A small handheld vacuum cleaner, characterized by: The vacuum cleaner nozzle comprises the vacuum cleaner nozzle according to any one of claims 1 to 14.

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