A handheld vacuum cleaner multi-functional airflow accessory assembly

Abstract

This invention discloses a multi-functional airflow accessory assembly for a handheld vacuum cleaner, comprising a milk frother structure detachably mounted at the air inlet of the handheld vacuum cleaner and a fan structure at the exhaust outlet. The milk frother structure includes a first support, a first fan blade, and a milk frother. The airflow from the vacuum cleaner's intake drives the first fan blade to rotate, thereby causing the milk frother to rotate synchronously and froth milk. The fan structure includes a second support, a second fan blade, and a fragrance pad. The clean airflow from the vacuum cleaner's exhaust drives the second fan blade to rotate, providing a gentle breeze. Simultaneously, the airflow passing over the fragrance pad can produce fragrance or achieve sterilization. This invention utilizes the airflow energy at the vacuum cleaner's air inlet and exhaust ends, requiring no additional power source, making it energy-efficient and environmentally friendly. Furthermore, the core components can be universally designed, allowing for easy assembly and disassembly, significantly expanding the application scenarios and value of handheld vacuum cleaners.

Description

Technical Field

[0001] This invention relates to the field of handheld vacuum cleaner technology, and more specifically to a multi-functional airflow accessory assembly for a handheld vacuum cleaner. Background Technology

[0002] Handheld vacuum cleaners, especially car vacuum cleaners, are widely used for cleaning car interiors and small areas of the home due to their compact size, portability, and ease of use. All existing handheld vacuum cleaners are equipped with an air intake system and an exhaust system. During operation, the air intake produces a continuous suction airflow, while the exhaust outlet discharges filtered clean air; both airflows possess a certain amount of wind power.

[0003] However, most handheld vacuum cleaners and their accessories currently on the market are only used for vacuuming, failing to fully utilize the airflow energy generated during operation. While some single-function vacuum cleaner accessories exist, these often only utilize airflow energy from either the intake or exhaust end, failing to achieve comprehensive utilization of the overall airflow energy of the vacuum cleaner. Specifically, existing technology suffers from the following: 1. Limited functionality: Most vacuum cleaner accessories can only perform vacuuming or a single additional function, failing to meet the diverse needs of users; 2. Low energy utilization: It only utilizes the airflow at the air intake or exhaust end of the vacuum cleaner, failing to fully exploit the wind energy generated when the vacuum cleaner is working; 3. Poor component interchangeability: Components with different functions often have completely different structural designs, and the parts cannot be interchanged, which increases manufacturing costs; 4. Inconvenient disassembly and assembly: The connection between existing accessories and vacuum cleaners is often quite complicated, making it difficult for users to quickly disassemble and switch functions.

[0004] Therefore, there is an urgent need to develop a multifunctional accessory system that can fully utilize the airflow energy at both the intake and exhaust ends of a handheld vacuum cleaner, is versatile, and is easy to assemble and disassemble, in order to expand the application scenarios of vacuum cleaners and enhance their value. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a multi-functional airflow accessory assembly for a handheld vacuum cleaner, so as to overcome the shortcomings of the prior art.

[0006] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows: A multi-functional airflow accessory assembly for a handheld vacuum cleaner is characterized by comprising a first bracket, a first fan blade, and a milk frother. The first bracket is a hollow cylindrical structure with openings at both ends, having a first bracket end and a second bracket end arranged opposite to each other. The first bracket end is used to mount the milk frother, and the second bracket end is used to be detachably connected to the air inlet of the handheld vacuum cleaner. A rotatable first fan blade is provided inside the first bracket. A rotatable milk frother mounting part is provided at the first bracket end, and the milk frother mounting part is drivenly connected to the first fan blade so that the first fan blade can drive the milk frother mounting part to rotate synchronously. The milk frother is detachably connected to the milk frother mounting part. The first fan blade is configured to rotate under the drive of airflow flowing through the inside of the first bracket, and drives the milk frother to rotate synchronously through the milk frother mounting part.

[0007] The handheld vacuum cleaner also features a detachable fan structure at the exhaust port, including a second bracket, a second fan blade, and a fragrance pad. The second bracket is a hollow cylindrical structure with openings at both ends, forming an airflow channel inside. It has a first end and a second end of the second bracket positioned opposite each other. The first end of the second bracket is the air outlet, and the second end of the second bracket is the air inlet, for detachable connection to the exhaust port of the handheld vacuum cleaner. The second fan blade is rotatably mounted within the airflow channel inside the second bracket. The second bracket also has a fragrance pad assembly part for fixing the fragrance pad, which is fixed to the fragrance pad assembly part. The airflow discharged from the handheld vacuum cleaner can flow through the airflow channel and drive the second fan blade to rotate. At the same time, the airflow passing through the fragrance pad makes the discharged air fragrant or achieves air sterilization.

[0008] The first support and the second support are respectively provided with a first fan blade support and a second fan blade support. A first bearing and a second bearing are respectively fixed in the first fan blade support and the second fan blade support. The first fan blade has a first fan blade shaft extending to the first fan blade support, and the first fan blade shaft is interference-fitted with the inner ring of the first bearing. The second fan blade has a second fan blade shaft extending to the second fan blade support, and the second fan blade shaft is interference-fitted with the inner ring of the second bearing. The milk maker mounting part is fixedly connected to the inner ring of the first bearing and rotates synchronously with the first fan blade.

[0009] The first support and the second support are respectively provided with a first fan blade support and a second fan blade support at the first end. The first fan blade support has a hollow first bearing mounting shaft extending to the second end of the first support, and the second fan blade support has a second bearing mounting shaft extending to the second end of the second support. The inner ring of the first bearing is interference-fitted onto the first bearing mounting shaft, and the inner ring of the second bearing is interference-fitted onto the second bearing mounting shaft. The hub center of the first fan blade is interference-fitted with the outer ring of the first bearing. The first fan blade also has a first fan blade rotating shaft extending into the first bearing mounting shaft. The milk maker mounting part is disposed on the first fan blade rotating shaft and rotates synchronously with the first fan blade. The hub center of the second fan blade is interference-fitted with the outer ring of the second bearing.

[0010] The second end of the second bracket is detachably connected to the exhaust port of the handheld vacuum cleaner via a snap-lock structure; the snap-lock structure includes at least one fastener disposed at the exhaust port of the handheld vacuum cleaner and at least one corresponding fastener disposed at the second end of the second bracket.

[0011] The fastener includes a first end along the screw-in installation direction and a second end opposite to the first end; the first end of the fastener has a beveled or arc-shaped guide portion; the fastening position includes an insertion portion and a limiting portion that are interconnected, the limiting portion has a cantilever to prevent the fastener from sliding out of the limiting portion along the assembly exit direction, the cantilever has a beveled or arc-shaped guide surface at the screw-in end; the limiting portion also has a limiting protrusion perpendicular to the screw-in direction, and the fastener has a limiting groove between the first end and the second end of the fastener that matches the limiting protrusion.

[0012] The first end of the first bracket and the first end of the second bracket are respectively provided with a first hollow protective cover and a second hollow protective cover. The first fan blade support is integrally formed in the central area of ​​the first hollow protective cover, and the second fan blade support is integrally formed in the central area of ​​the second hollow protective cover. The first fan blade support is connected to the periphery of the first hollow protective cover by multiple radially arranged first support ribs, and the second fan blade support is connected to the periphery of the second hollow protective cover by multiple radially arranged second support ribs. The first hollow protective cover is detachably connected to the first end of the first bracket, and the second hollow protective cover is detachably connected to the first end of the second bracket. The first hollow protective cover and the second hollow protective cover are each evenly distributed with multiple through holes for airflow.

[0013] The second hollow protective cover is provided with a hinge buckle and an elastic buckle on opposite sides, and the first end of the second bracket is provided with a hinge shaft and a fastening part, the fastening part being provided with an inlet surface; the second hollow protective cover is hinged to the first end of the second bracket through the cooperation of the hinge buckle and the hinge shaft, and is detachably fixed through the cooperation of the elastic buckle and the fastening part.

[0014] The milk frother is a spring-loaded milk frother made of food-grade stainless steel wire. The milk frother is fixed to the milk frother mounting part by plugging, welding or threading. The fragrance tablet is a solid fragrance tablet or antibacterial tablet made by pressing volatile aromatic substances or antibacterial factors with a base material. The fragrance tablet is fixed in the fragrance tablet assembly part by plugging or snapping.

[0015] The scented sachet assembly extends from the second fan blade support into the interior of the second bracket, or from the inner wall of the second bracket into the first end of the second bracket, and includes at least a pair of opposing elastic hooks.

[0016] The above technical solution has the following beneficial effects: The handheld vacuum cleaner structure of this invention is compatible with multi-functional accessories, enabling a single device to perform multiple functions such as vacuuming, milk dispensing, and blow-drying, making it suitable for various scenarios. It fully utilizes the airflow to drive the accessories, requiring no additional power supply, thus saving energy and being environmentally friendly. The core components are universal to reduce costs and increase efficiency, and the device is easy to assemble and disassemble, operates smoothly and quietly, and balances food safety with air purification and sterilization. Attached Figure Description

[0017] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0018] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0019] Figure 1 This is a schematic diagram of the structure of the present invention, showing the installation of the milk frother and the fan; Figure 2 This is a longitudinal sectional view of the present invention; Figure 3 This is an enlarged cross-sectional view of the air inlet of a handheld vacuum cleaner. Figure 4 Enlarged view of the structure of the milk frother and air inlet assembly; Figure 5 This is an enlarged cross-sectional view of the first type of milk frother. Figure 6This is an enlarged cross-sectional view of the second type of milk frother structure. Figure 7 Enlarged sectional view of the fan structure and exhaust port installation; Figure 8 Exploded view of the exhaust port and fan assembly; Figure 9 for Figure 7 Enlarged view of a portion of point a; Figure 10 for Figure 7 Enlarged view of section b in the middle.

[0020] Explanation of reference numerals in the attached drawings: 1. First bracket; 11. First end of the first bracket; 111. First fan blade support; 112. First bearing mounting shaft; 113. First bearing; 114. First perforated protective cover; 115. First support rib; 12. Second end of the first bracket; 121. First positioning block; 2. Second bracket; 21. First end of the second bracket; 211. Second fan blade support; 212. Second bearing; 213. Second perforated protective cover; 214. Second support rib; 215. Second bearing mounting shaft; 22. Second end of the second bracket; 23. Fastener; 231. First end of the fastener; 232. Second end of the fastener; 233. 234. Inlet; 24. Limiting groove; 25. Buckle; 26. Insertion part; 27. Limiting part; 28. Limiting buckle; 29. ​​Hinge shaft; 20. First fan blade; 20. First fan blade shaft; 21. Second fan blade; 22. Second fan blade shaft; 33. Milk frother; 44. Milk frother mounting part; 6. Fragrance tablet; 65. Fragrance tablet assembly part; 76. Handheld vacuum cleaner; 77. Air inlet; 78. Fixing rib; 79. Axial mounting part; 70. First axial positioning part; 71. Exhaust port. Detailed Implementation

[0021] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding the present invention, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0022] See Figures 1-10 As shown, this invention discloses a multi-functional airflow accessory assembly for a handheld vacuum cleaner, including a milk frother structure installed at the air inlet 71 and a fan structure installed at the exhaust outlet 72 of the handheld vacuum cleaner 7. The milk frother function can be driven by the suction airflow generated at the air inlet 71 when the handheld vacuum cleaner 7 is working, and the fan and aromatherapy functions can be driven by the clean airflow discharged from the exhaust outlet 72, thus fully utilizing the airflow energy of the vacuum cleaner.

[0023] The milk frother structure of the air inlet 71 includes a first bracket 1, a first fan blade 3, and a milk frother 4. The first bracket 1 is a hollow cylindrical structure with openings at both ends, with its axial ends being a first end 11 and a second end 12, respectively. The first end 11 is used to mount the milk frother 4, and the second end 12 is set in a flattened round shape for detachable connection with the air inlet 71 of the handheld vacuum cleaner 7 to prevent circumferential rotation after installation.

[0024] The first end 11 of the first bracket is provided with a first fan blade support seat 111. The first fan blade 31 is connected to the first fan blade support seat 111 via a bearing and is rotatably mounted in the internal cavity of the first bracket 1. The first end 11 of the first bracket is provided with a rotatable milk frother mounting part 41. The milk frother mounting part 41 is coaxially connected to the first fan blade 31, so that when the first fan blade 31 rotates, it can drive the milk frother mounting part 41 to rotate synchronously. The milk frother 4 is detachably connected to the milk frother mounting part 41.

[0025] Specifically, a first bearing 113 is press-fitted and fixed inside the first fan blade support 111. The center of the first fan blade 31 has a first fan blade shaft 311 extending towards the first fan blade support 111. The first fan blade shaft 311 is interference-fitted and fixed to the inner ring of the first bearing 113, achieving rotatable support for the first fan blade 31 relative to the first fan blade support 111. The milk maker mounting part 41 is fixedly connected to the end of the inner ring of the first bearing 113, thereby rotating synchronously with the first fan blade 31.

[0026] The first end 11 of the first bracket is also provided with a first hollow protective cover 114. The first hollow protective cover 114 is a disc-shaped structure that is installed in conjunction with the first end 11 of the first bracket. The first fan blade support 111 is integrally formed in the central area of ​​the first hollow protective cover 114 and is connected to the outer edge of the first hollow protective cover 114 by multiple radially arranged first support ribs 115. The first hollow protective cover 114 not only fixes the first fan blade support 111, but also isolates the inner cavity of the first bracket 1 from the outside world to prevent debris from entering the fan blade rotation area and affecting the operation of the structure, or to prevent people from being injured by the rotation of the fan blade.

[0027] The first perforated protective cover 114 has multiple through holes evenly distributed between the first support ribs 115 to allow airflow to pass through, so that the handheld vacuum cleaner 7 can draw in air into the air inlet 71 when it is in operation.

[0028] In this embodiment, the second end 12 of the first bracket and the air inlet 71 of the handheld vacuum cleaner are fixed by a direct insertion sleeve. The second end 12 of the first bracket serves as the sleeve, and the air inlet 71 of the handheld vacuum cleaner serves as the sleeved part. The inner wall of the air inlet 71 is provided with a fixing rib 711 extending axially inward from the insertion interface. The fixing rib 711 is a boss protruding from the inner wall of the air inlet 71. The inner wall of the air inlet 71 is also provided with a first axial positioning part 713, which is located on the axial rear side of the fixing rib 711. The outer wall of the second end 12 of the first bracket is provided with two opposing first positioning blocks 121. In the assembled state, the end face of the second end 12 of the first bracket abuts against the first axial positioning part 713, and the end face of the air inlet 71 abuts against the first positioning block 121. The two cooperate to achieve axial limiting.

[0029] An axial mounting portion 712 is formed between the fixing rib 711 and the first axial positioning portion 713. The radial height of the axial mounting portion 712 is consistent with the radial height of the fixing rib 711, ensuring the tightness and airtightness of the second end 12 of the first bracket during installation. A sealing ring can also be provided between the mating surface of the second end 12 of the first bracket and the air inlet 71 of the handheld vacuum cleaner to further improve the sealing performance.

[0030] The second end 12 of the first bracket is securely connected to the air inlet 71 of the handheld vacuum cleaner via an interference fit. During installation, the second end 12 of the first bracket can undergo a slight elastic deformation, thereby tightly fitting into the air inlet.

[0031] The milk frother 4 is a spring-loaded milk frother made of food-grade stainless steel wire. It is fixed to the end of the milk frother mounting part 41 by a plug-in method, which is convenient for disassembly, replacement and cleaning.

[0032] The fan structure of the exhaust port 72 includes a second bracket 2, a second fan blade 32, and a fragrance pad 6. The second bracket 2 is a hollow cylindrical structure with openings at both ends, and its axial ends are the first end 21 and the second end 22 of the second bracket, respectively. The first end 21 of the second bracket is the air outlet, and the second end 22 of the second bracket is the air inlet. It is detachably connected to the exhaust port 72 of the handheld vacuum cleaner 7 to prevent axial rotation after installation.

[0033] The second fan blade 32 is rotatably mounted in the internal airflow channel of the second bracket 2. The second bracket 2 also has an air sachet assembly part 61 for accommodating the air sachet 6. The inlet of the airflow channel inside the second bracket 2 is sealed and connected to the exhaust port 72 of the handheld vacuum cleaner, and the outlet is an air outlet 25 located at the first end 21 of the second bracket, which blows air outward. The air outlet 25 can be in the same direction as the bracket axis or at an inclined angle. In this embodiment, the air outlet is arranged perpendicular to the bracket axis, and the bracket has an arc surface inside to reduce the energy loss of the airflow.

[0034] Specifically, the first end 21 of the second bracket is provided with a second fan blade support 211, and the second fan blade support 211 has a second fan blade shaft 321 extending towards the second end 22 of the second bracket. The inner ring of the second bearing 212 is interference-fitted onto the outer wall of the second fan blade shaft 321, that is, the inner ring of the second bearing 212 is fixed relative to the second fan blade support 211. The second fan blade 32 is provided with an assembly hole that is interference-fitted with the outer ring of the second bearing 212, so that the second fan blade 32 can rotate freely relative to the second fan blade support 211. The fragrance sachet assembly part 61 is provided in the central area of ​​the air outlet side of the second fan blade support 211, and the fragrance sachet is housed therein, so that the airflow can fully blow over the fragrance sachet 6.

[0035] The first end 21 of the second bracket is also provided with a second hollow protective cover 213. The second hollow protective cover 213 is a disc-shaped structure that is installed in conjunction with the first end 21 of the second bracket. The second fan blade support 211 is integrally formed in the central area of ​​the second hollow protective cover 213 and is connected to the outer edge of the second hollow protective cover 213 by multiple radially arranged second support ribs 214. The second hollow protective cover 213 not only fixes the second fan blade support 211, but also isolates the inner cavity of the second bracket 2 from the outside world, thus playing a safety protection role.

[0036] The second perforated protective cover 213 has multiple through holes evenly distributed between the second support ribs 214 for airflow. The second perforated protective cover 213 is detachably connected to the end of the first end 21 of the second bracket by a snap-fit ​​mechanism, facilitating disassembly, cleaning, and replacement of the incense pads. Specifically, the second perforated protective cover 213 has a hinge buckle 28 and an elastic buckle 26 on opposite sides, and the first end 21 of the second bracket has a hinge shaft 29 and a fastening part 27 at corresponding positions. The entrance of the fastening part 27 has a beveled guide surface. During installation, first, the hinge buckle 28 is inserted into the hinge shaft 29, causing the second perforated protective cover 213 to rotate around the hinge shaft 29, and then the elastic buckle 26 is pressed to engage with the fastening part 27 to complete the fixation. During disassembly, simply move the elastic buckle 26 to disengage it from the fastening part 27 to flip the second perforated protective cover 213.

[0037] The second end 22 of the second bracket is detachably connected to the exhaust port 72 of the handheld vacuum cleaner via a snap-lock structure. The snap-lock structure includes two fasteners 23 located at the exhaust port 72 of the handheld vacuum cleaner and two corresponding fastening positions 24 located at the second end 22 of the second bracket. Each fastener 23 includes a first end 231 along the screw-in installation direction and a second end 232 opposite to the first end 231. The first end 231 has a beveled or arc-shaped guide portion 233 to facilitate guiding the fastener into the fastening position during installation.

[0038] The fastener 24 includes an insertion part 241 and a limiting part 242 that are interconnected. The limiting part 242 has a cantilever 243 to prevent the fastener 23 from falling off the limiting part 242 in the insertion direction. The cantilever 243 has an arc-shaped guide surface 244 at the screw-in end, allowing the fastener to smoothly slide over the cantilever and into the limiting part when screwed in. The limiting part 242 also has a limiting protrusion 245 perpendicular to the screw-in direction. The fastener 23 has a limiting groove 234 that matches the limiting protrusion 245 between its first end 231 and second end 232. When the fastener is screwed in, the limiting protrusion 245 engages with the limiting groove 234, achieving dual axial and circumferential positioning and preventing accidental dislodgement of the fastener.

[0039] During installation, align the second end 22 of the second bracket with the exhaust port 72, align the fastener 23 with the insertion part 241 and insert it axially. Then rotate the second bracket 2 so that the fastener 23 slides along the guide surface 244 over the cantilever 243 and enters the limiting part 242 until the limiting protrusion 245 is engaged in the limiting groove 234, thus completing the installation. To remove, simply rotate in the opposite direction.

[0040] The fragrance sachet 6 is a solid fragrance sachet or antibacterial sachet, which is made by pressing volatile aromatic substances or antibacterial agents with a base material. It is fixed in the fragrance sachet assembly part 61 by a snap-fit ​​method, making it easy to disassemble and replace.

[0041] When the milk-making function is needed, insert the second end 12 of the first bracket into the air inlet 71 of the handheld vacuum cleaner and push it into place. After turning on the handheld vacuum cleaner 7, the negative pressure airflow generated by the vacuum cleaner enters the interior of the first bracket 1 through the through hole of the first end 11 of the first bracket, flows through the first fan blade and drives it to rotate at high speed. The first fan blade drives the milk maker mounting part 41 and the milk maker 4 to rotate synchronously through the inner ring of the first bearing 113. The milk maker 4 can be inserted into the container containing milk to realize the milk-making function.

[0042] When the fan function is needed, the second end 12 of the first bracket is detached from the air inlet 71 of the handheld vacuum cleaner, and the second end 22 of the second bracket is rotated onto the exhaust port 72 of the handheld vacuum cleaner 7. The clean exhaust gas generated by the vacuum cleaner's internal filtration system enters the airflow channel of the second bracket 2 through the exhaust port 72, flows through the second fan blade 32, and drives it to rotate at high speed. The rotation of the second fan blade 32 can expand the airflow coverage area, while buffering the airflow and reducing the airflow speed, resulting in a gentler airflow suitable for direct blowing on the human body for cooling. As the airflow passes through the airflow channel, it blows over the fragrance tablet 6, thereby carrying the fragrance or antibacterial ingredients of the fragrance tablet 6 out, achieving the purpose of sterilization or adding fragrance to the environment.

[0043] When the vacuuming function is needed, the user can remove the accessories from the handheld vacuum cleaner 7, and the handheld vacuum cleaner 7 can then resume its normal vacuuming function.

[0044] Optionally, the first fan blade support and the first bearing are assembled using the same method as the second fan blade support and the second bearing, while the second fan blade support and the second bearing are assembled using the same method as the first fan blade support and the first bearing.

[0045] The first end 11 of the first bracket is provided with a first fan blade support seat 111, which has a hollow first bearing mounting shaft 112 extending toward the second end 12 of the first bracket. The inner ring of the first bearing 113 is interference-fitted onto the outer wall of the first bearing mounting shaft 112, that is, the inner ring of the first bearing 113 is fixed relative to the first fan blade support seat 111. The center of the first fan blade 31 is provided with a mounting hole, which is interference-fitted with the outer ring of the first bearing 113, so that the first fan blade 31 can rotate freely relative to the first fan blade support seat 111. The first fan blade 31 also has a first fan blade rotating shaft 311 extending into the first bearing mounting shaft 112, and the milk maker mounting part 41 is fixedly disposed at the end of the first fan blade rotating shaft 311, so as to rotate synchronously with the first fan blade 31.

[0046] The second bearing 212 is press-fitted into the second blade support 211. The center of the second blade 32 has a second blade shaft 321 extending toward the second blade support 211. The second blade shaft 321 is fixed with the inner ring of the second bearing 212 by interference fit, so as to realize the low-resistance rotation of the second blade 32 relative to the second blade support 211.

[0047] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and these variations still fall within the protection scope of the present invention.

Claims

1. A multi-functional airflow accessory assembly for a handheld vacuum cleaner, characterized in that, The device includes a first bracket, a first fan blade, and a milk frother. The first bracket is a hollow cylindrical structure with openings at both ends, having a first bracket first end and a second bracket first end arranged opposite to each other. The first bracket first end is used to mount the milk frother, and the second bracket first end is used to be detachably connected to the air inlet of a handheld vacuum cleaner. A rotatable first fan blade is provided inside the first bracket. A rotatable milk frother mounting part is provided at the first bracket first end, and the milk frother mounting part is drivenly connected to the first fan blade so that the first fan blade can drive the milk frother mounting part to rotate synchronously. The milk frother is detachably connected to the milk frother mounting part. The first fan blade is configured to rotate under the drive of airflow flowing through the inside of the first bracket, and drive the milk frother to rotate synchronously through the milk frother mounting part.

2. The multi-functional airflow accessory assembly for a handheld vacuum cleaner according to claim 1, characterized in that, This component also includes a fan structure detachable from the exhaust port of a handheld vacuum cleaner, comprising a second bracket, a second fan blade, and a fragrance pad. The second bracket is a hollow cylindrical structure with openings at both ends, forming an airflow channel inside. It has a first end and a second end of the second bracket arranged opposite to each other. The first end of the second bracket is the air outlet, and the second end of the second bracket is the air inlet, for detachable connection with the exhaust port of the handheld vacuum cleaner. The second fan blade is rotatably disposed within the airflow channel inside the second bracket. The second bracket also has a fragrance pad assembly part for fixing the fragrance pad, and the fragrance pad is fixed on the fragrance pad assembly part. The airflow discharged from the handheld vacuum cleaner can flow through the airflow channel and drive the second fan blade to rotate. At the same time, the airflow flows through the fragrance pad to make the discharged air fragrant or to achieve air sterilization.

3. The multi-functional airflow accessory assembly for a handheld vacuum cleaner according to claim 2, characterized in that, The first support and the second support are respectively provided with a first fan blade support and a second fan blade support. A first bearing and a second bearing are respectively fixed in the first fan blade support and the second fan blade support. The first fan blade has a first fan blade shaft extending to the first fan blade support, and the first fan blade shaft is interference-fitted with the inner ring of the first bearing. The second fan blade has a second fan blade shaft extending to the second fan blade support, and the second fan blade shaft is interference-fitted with the inner ring of the second bearing. The milk maker mounting part is fixedly connected to the inner ring of the first bearing and rotates synchronously with the first fan blade.

4. The multi-functional airflow accessory assembly for a handheld vacuum cleaner according to claim 2, characterized in that, The first support and the second support are respectively provided with a first fan blade support and a second fan blade support at the first end. The first fan blade support has a hollow first bearing mounting shaft extending to the second end of the first support, and the second fan blade support has a second bearing mounting shaft extending to the second end of the second support. The inner ring of the first bearing is interference-fitted onto the first bearing mounting shaft, and the inner ring of the second bearing is interference-fitted onto the second bearing mounting shaft. The hub center of the first fan blade is interference-fitted with the outer ring of the first bearing. The first fan blade also has a first fan blade rotating shaft extending into the first bearing mounting shaft. The milk maker mounting part is disposed on the first fan blade rotating shaft and rotates synchronously with the first fan blade. The hub center of the second fan blade is interference-fitted with the outer ring of the second bearing.

5. A multi-functional airflow accessory assembly for a handheld vacuum cleaner according to claim 3 or 4, characterized in that, The second end of the second bracket is detachably connected to the exhaust port of the handheld vacuum cleaner via a snap-lock structure; the snap-lock structure includes at least one fastener disposed at the exhaust port of the handheld vacuum cleaner and at least one corresponding fastener disposed at the second end of the second bracket.

6. A multi-functional airflow accessory assembly for a handheld vacuum cleaner according to claim 5, characterized in that, The fastener includes a first end along the screw-in installation direction and a second end opposite to the first end; the first end of the fastener has a beveled or arc-shaped guide portion; the fastening position includes an insertion portion and a limiting portion that are interconnected, the limiting portion has a cantilever to prevent the fastener from sliding out of the limiting portion along the assembly exit direction, the cantilever has a beveled or arc-shaped guide surface at the screw-in end; the limiting portion also has a limiting protrusion perpendicular to the screw-in direction, and the fastener has a limiting groove between the first end and the second end of the fastener that matches the limiting protrusion.

7. A multi-functional airflow accessory assembly for a handheld vacuum cleaner according to claim 6, characterized in that, The first end of the first bracket and the first end of the second bracket are respectively provided with a first hollow protective cover and a second hollow protective cover. The first fan blade support is integrally formed in the central area of ​​the first hollow protective cover, and the second fan blade support is integrally formed in the central area of ​​the second hollow protective cover. The first fan blade support is connected to the periphery of the first hollow protective cover by multiple radially arranged first support ribs, and the second fan blade support is connected to the periphery of the second hollow protective cover by multiple radially arranged second support ribs. The first hollow protective cover is detachably connected to the first end of the first bracket, and the second hollow protective cover is detachably connected to the first end of the second bracket. The first hollow protective cover and the second hollow protective cover are each evenly distributed with multiple through holes for airflow.

8. A multi-functional airflow accessory assembly for a handheld vacuum cleaner according to claim 7, characterized in that, The second hollow protective cover is provided with a hinge buckle and an elastic buckle on opposite sides, and the first end of the second bracket is provided with a hinge shaft and a fastening part, the fastening part being provided with an inlet surface; the second hollow protective cover is hinged to the first end of the second bracket through the cooperation of the hinge buckle and the hinge shaft, and is detachably fixed through the cooperation of the elastic buckle and the fastening part.

9. A multi-functional airflow accessory assembly for a handheld vacuum cleaner according to claim 8, characterized in that, The milk frother is a spring-loaded milk frother made of food-grade stainless steel wire. The milk frother is fixed to the milk frother mounting part by plugging, welding or threading. The fragrance tablet is a solid fragrance tablet or antibacterial tablet made by pressing volatile aromatic substances or antibacterial factors with a base material. The fragrance tablet is fixed in the fragrance tablet assembly part by plugging or snapping.

10. A multi-functional airflow accessory assembly for a handheld vacuum cleaner according to claim 9, characterized in that, The scented sachet assembly extends from the second fan blade support into the interior of the second bracket, or from the inner wall of the second bracket into the first end of the second bracket, and includes at least a pair of opposing elastic hooks.

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