Portable high-speed fan and assembly method thereof

Abstract

This invention discloses a portable high-speed fan and its assembly method, comprising: a cylindrical outer shell including a top cover, an upper shell, a metal mesh ring, a lower shell, and a bottom cover; an air outlet is provided on the outer side of the upper shell, and the lower shell is a handheld part; an air duct support fixed to the upper part of the upper shell, and the top cover fixed to the upper end of the air duct support; an air supply assembly including a motor support and a high-speed motor; the motor support is fixedly installed to the upper shell, and the lower shell is fixedly connected to the motor support; the lower end of the motor support has an air inlet connected to the air duct; the metal mesh ring covers the lower end of the motor support and has an air inlet hole connecting to the air inlet; the high-speed motor has an air guide channel connecting the air inlet and the air duct; a control assembly including a battery holder, a battery, and a circuit board; the battery holder is fixedly connected to the air duct support; the lower shell is fitted around the battery holder; the bottom cover is fixed to the lower end of the battery holder and seals the lower port of the lower shell; and a stepless speed-regulating roller on the circuit board is exposed on the surface of the lower shell.

Description

Technical Field

[0001] This invention relates to the field of fan product technology, and specifically to a portable high-speed fan and its assembly method. Background Technology

[0002] A fan is a device used to generate airflow and cool down in hot weather. An electric fan is an electrically driven device that produces airflow. The fan inside rotates when powered on, creating a natural breeze to achieve a cooling effect. To make it more convenient for people to hold, portable handheld fans have appeared on the market. They can be held in the hand to achieve a cooling effect, making them extremely convenient to use and a top choice for hot summer days.

[0003] Chinese utility model patent application number 202321574046.5 discloses a handheld fan, comprising an air delivery part and a handheld part. The air delivery part includes an inner shell, an outer shell, and a fan assembly. The inner shell forms an air passage, an air inlet communicating with one side of the air passage, and an air outlet communicating with the other side of the air passage. The fan assembly is disposed in the air passage. The outer shell is used to cover the inner shell and has a mounting opening. The handheld part includes a handheld housing, a mounting mechanism, and a fixing member. The handheld housing covers the mounting mechanism and extends into the mounting opening. The fixing member passes through the outer shell and the handheld housing sequentially and is connected to the mounting mechanism. (See attached appendix of this patent (202321574046.5)). Figure 3 As can be seen, the handheld fan is T-shaped, similar to the shape of a hair dryer. The design is common, and because the air delivery part is horizontally placed on the upper part of the hand, the upper part of the handheld fan (i.e. the air delivery part) is large and takes up a lot of space, making it inconvenient to carry.

[0004] In view of the above, the inventors propose the following technical solution. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a portable high-speed fan and its assembly method.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: The portable high-speed fan includes: a cylindrical outer shell, comprising a top cover, a cylindrical upper shell, a metal mesh ring, a cylindrical lower shell, and a bottom cover connected sequentially from top to bottom; an air outlet is provided on the outer side of the upper end of the upper shell, and the lower shell is provided as a handhold for a person to hold; an air duct bracket, which is embedded and fixed to the upper part of the upper shell, and the top cover is fixedly installed on the upper end of the air duct bracket, and the top cover covers the upper opening of the upper shell; the air duct bracket has an air duct communicating with the air outlet; and an air supply assembly, comprising a motor bracket and a high-speed motor installed in the motor bracket, the upper end of the motor bracket being fixedly installed to the lower end of the upper shell, and the upper end of the lower shell being fixedly connected to the bottom of the motor bracket. The lower end of the motor bracket is provided with an air inlet connected to a ventilation duct. The metal mesh ring is fixedly covered to the lower end of the motor bracket in a detachable and replaceable manner, and the metal mesh ring has multiple air inlet holes that connect to the air inlet. The high-speed motor has an air guide channel that connects the air inlet and the air duct. The control component includes a battery rack and a battery and circuit board mounted on the battery rack. The upper end of the battery rack is also fixedly connected to the lower end of the air duct bracket. The lower housing is fitted around the battery rack, and the bottom cover is fixed to the lower end of the battery rack and seals the lower port of the lower housing. The circuit board is provided with a stepless speed-regulating roller for controlling the wind speed of the air supply component. The stepless speed-regulating roller passes through a hole provided in the lower housing to be exposed outside the surface of the lower housing, and the stepless speed-regulating roller is located below the air outlet.

[0007] Furthermore, in the above technical solution, the motor bracket is cylindrical, and the lower end of the motor bracket has several thin ribs and a base plate integrally connected to the lower end of the thin ribs. An air inlet is formed between two adjacent thin ribs, and a wire groove for accommodating the wires of the high-speed motor is provided on the outer side of one of the thin ribs. The wire groove extends upward and penetrates the upper end surface of the motor bracket, and the base plate is also provided with a wire hole for the wire to pass through. A wire passage corresponding to the wire hole is provided on the side of the thin rib.

[0008] Furthermore, in the above technical solution, a strip-shaped positioning groove is provided on the outer side of one of the thin ribs; the metal mesh ring is formed by bending the metal mesh into a ring and bending both ends at 90 degrees and then folding them in half, and the inner side of the metal mesh ring is formed with a bent part protruding from the outside to the inside, which is pressed into the strip-shaped positioning groove from the outside to the inside, so that the metal mesh ring is fixedly wrapped around the lower periphery of the motor bracket.

[0009] Furthermore, in the above technical solution, the air duct includes a straight section connected to the air inlet, an arc-shaped section connected to the straight section and smaller in size than the straight section, and a horizontal section connected to the arc-shaped section. The horizontal section is connected to the air outlet, which is located on the outer side of the upper end of the outer casing. The air supply component is located at the lower end of the straight section.

[0010] Furthermore, in the above technical solution, a first sound-absorbing cotton is filled between the top cover and the upper end of the air duct support, and a second sound-absorbing cotton is filled between the outer side of the air duct support and the upper shell; a soft rubber shock-absorbing pad is sleeved on the outside of the high-speed motor, and the soft rubber shock-absorbing pad is in contact with the air duct support and the motor support.

[0011] Furthermore, in the above technical solution, one side of the battery rack has a mounting groove, the battery is embedded in the mounting groove, and the circuit board is fixed to the other side of the battery rack by screws.

[0012] Furthermore, in the above technical solution, the lower end of the battery holder is also provided with two left and right clamping arms distributed to the left and right. Both the left and right clamping arms protrude outside the mounting groove, and the left and right clamping arms clamp and fix the part of the battery protruding outside the mounting groove to confine the battery in the mounting groove.

[0013] Furthermore, in the above technical solution, the circuit board is also snapped with a roller bracket, which has a roller plastic cover. The roller plastic cover is also embedded in the hole. The roller plastic cover has a window, and the stepless speed-adjustable roller is rotatably installed in the roller bracket. The stepless speed-adjustable roller partially passes through the window and extends out of the roller plastic cover. Both sides of the roller bracket are integrally formed with elastic buckles, and the circuit board is provided with buckle positions that are adapted to the elastic buckles. The elastic buckles are snapped and fixed with the buckle positions.

[0014] Furthermore, in the above technical solution, a notch is provided at the lower end of the lower housing; a protrusion is provided at the position corresponding to the notch on the bottom cover, the protrusion is embedded and fixed in the notch and exposed on the outer side of the lower end of the lower housing, and a rope hole for attaching a lanyard or hook is also provided on the outer side of the protrusion; a first window and a second window located next to the first window are also provided at the bottom of the bottom cover, and a USB charging interface and an indicator light are also provided at the lower end of the circuit board, the USB charging interface is exposed through the first window, and a light guide is embedded in the second window, the light guide and the indicator light are matched and installed.

[0015] A method for assembling a portable high-speed fan, comprising the following steps:

[0016] S001: Secure the circuit board to the battery holder with the first screw, install the continuously variable speed roller on the circuit board, and install the battery on the battery holder to form a control assembly;

[0017] S002: Insert and fix the lower end of the air duct bracket to the upper end of the motor bracket of the air supply assembly, so that the air duct of the air duct bracket is connected to the air guide channel of the high-speed motor in the air supply assembly.

[0018] S003: Connect the motor bracket of the air supply assembly to the battery rack and secure it with the second screw to fix the air supply assembly to the upper end of the control assembly;

[0019] S004: The upper housing is fitted onto the outside of the air duct bracket and covers the upper part of the air supply assembly. The lower end of the upper housing abuts against the flange in the middle of the motor bracket, and the tensioning rib on the outer surface of the motor bracket contacts the inner wall of the upper housing for tensioning and fixing, so that the upper housing is fixed on the motor bracket. The flange is located above the air inlet. The air duct of the air duct bracket corresponds to the air outlet on the outer side of the upper end of the upper housing. Then, the top cover is installed at the first stepped groove at the opening at the upper end of the upper housing, and the top cover also presses against the upper end of the air duct bracket and is snapped and fixed to the upper end of the air duct bracket, so that the top cover blocks the opening at the upper end of the upper housing and tightens the air duct bracket.

[0020] S005: The metal mesh ring is fixedly wrapped around the lower end of the motor bracket in a detachable and replaceable manner, and covers the air inlet; or, the metal mesh ring passes through the control component from bottom to top and is then fitted and fixed to the lower end of the motor bracket, and covers the air inlet; wherein, the air inlet hole of the metal mesh ring is connected to the air inlet, and the upper end of the metal mesh ring is connected to the lower end of the upper housing.

[0021] S006: The lower housing is fitted around the control component from bottom to top, and the first clip of the lower housing is fixed with the first undercut buckle at the lower end of the motor bracket. The lug inside the lower housing is aligned with the limiting groove of the battery holder. The through hole of the lug corresponds to the screw hole at the bottom of the limiting groove. The third screw passes through the through hole of the lug and the screw hole to fix it screwed together, so that the lower housing is fixed together with the control component and the motor bracket. The upper end of the lower housing is connected to the lower end of the metal mesh ring.

[0022] S007: The bottom cover is snapped into the lower port of the lower housing, and the bottom cover is also locked to the lower end of the battery holder by the fourth screw, and the USB charging port provided at the lower end of the circuit board is exposed in the first window hole at the bottom of the bottom cover.

[0023] S008: Attach and fix the diaphragm to the bottom surface of the cover, and cover the fourth screw.

[0024] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0025] 1. The outer shell of this invention is cylindrical, making the overall size of the invention relatively small, especially the narrow upper part, which requires less space, making it extremely convenient to carry and store. Furthermore, the top cover, upper shell, metal mesh ring, lower shell, and bottom cover are sequentially joined from top to bottom to form the outer shell, resulting in a stable assembly structure and a simple appearance. The metal mesh ring enhances the decorative effect. The metal mesh ring is located in the middle of the outer shell, and the lower part of the outer shell is designed as a handhold, serving as a boundary and clearly indicating the position of the handhold for quick and easy gripping of the outer shell, making it convenient to use. Simultaneously, the air inlet vents in the metal mesh ring are located on the outer periphery of the middle part of the outer shell, above the handhold. This does not affect the air intake; that is, the user's hand will not cover the air inlet vents, ensuring normal airflow.

[0026] 2. Because the present invention sets the air inlet on the metal mesh ring in the middle of the outer shell and sets the air outlet on the outside of the upper shell, the air duct length between the air inlet and the air outlet is relatively short, which can effectively avoid air leakage, thereby ensuring a large wind force and a relatively large air volume, resulting in high wind efficiency, enhancing the user experience, and having an excellent cooling function.

[0027] 3. This invention integrates the battery and circuit board mounted on a battery holder to form a single unit, serving as a control component that is easy to install. The air delivery component is positioned in the middle or upper part of the outer casing, resulting in a lighter upper portion and a heavier lower portion, thus providing a comfortable grip for the user. Furthermore, this invention utilizes a stepless speed-regulating roller to precisely control the airflow speed of the air delivery component, making it extremely convenient and easy to operate. Moreover, the air inlet, air duct, and air outlet are all located above the battery and circuit board. Even if the battery generates heat, the heat will not enter the air duct, thus not affecting the airflow entering the duct. In other words, the air blown out by this invention will not be heated, ensuring a more comfortable airflow and providing a better cooling effect, thus enhancing the user experience. Attached Figure Description

[0028] Figure 1 This is a perspective view of the present invention;

[0029] Figure 2 This is a perspective view of the invention from another angle;

[0030] Figure 3 This is a cross-sectional view of the present invention;

[0031] Figure 4 This is an exploded perspective view of the present invention;

[0032] Figure 5 This is a perspective view of the air duct support in this invention;

[0033] Figure 6 This is an exploded perspective view of the air duct support in this invention;

[0034] Figure 7 This is an assembly diagram of the air duct support and air supply assembly in this invention;

[0035] Figure 8 This is a perspective view of the second air duct frame in this invention;

[0036] Figure 9 This is an assembly diagram of the metal mesh ring and the air supply component in this invention;

[0037] Figure 10 This is a perspective view of the high-speed motor in this invention;

[0038] Figure 11 This is an exploded view of the assembly of the metal mesh ring and the air supply component in this invention;

[0039] Figure 12 This is a perspective view of the high-speed motor in this invention from another angle;

[0040] Figure 13 This is a perspective view of the control component in this invention;

[0041] Figure 14 This is a perspective view of the control component in this invention from another angle;

[0042] Figure 15 This is a perspective view of the lower housing in this invention;

[0043] Figure 16 This is a diagram showing the assembly steps of the present invention. Detailed Implementation

[0044] The present invention will be further described below with reference to specific embodiments and accompanying drawings.

[0045] See Figure 1-16 As shown, a portable high-speed fan includes: a cylindrical housing 1, an air delivery assembly 2, an air duct support 4, and a control assembly 500.

[0046] The outer casing 1 is cylindrical and includes, from top to bottom, a top cover 13, a cylindrical upper shell 11, a metal mesh ring 6, a cylindrical lower shell 12, and a bottom cover 14. An air outlet 103 is provided on the outer side of the upper end of the upper shell 11, and the lower shell 12 is designed as a handhold. The cylindrical shape of the outer casing 1 in this invention makes the overall size of the invention relatively small, especially the narrow upper part, which requires less space, making it extremely convenient to carry and store. Furthermore, the top cover 13... The upper shell 11, metal mesh ring 6, lower shell 12, and bottom cover 14 are sequentially joined from top to bottom to form the outer shell 1. Its assembly structure is stable and its appearance is simple. The metal mesh ring 6 enhances the decorative effect. The outer shell 1 of this invention features a metal mesh ring 6 in the middle, and the lower part of the outer shell 1 is divided into a handhold 102 by the metal mesh ring 6. This serves as a boundary, allowing the user to clearly see the position of the handhold 102 and quickly grasp it to hold the outer shell 1, making it convenient to use. Simultaneously, the air inlet hole provided by the metal mesh ring 6 is located on the outer periphery of the middle part of the outer shell 1 and above the handhold 102. It does not affect the air intake of the air inlet hole 101; that is, when the user holds the handhold 102, it will not cover the air inlet hole 101, ensuring that the air inlet hole 101 can intake air normally.

[0047] The air duct bracket 4 is embedded and fixed to the upper part of the upper shell 11, and the top cover 13 is fixedly installed on the upper end of the air duct bracket 4, and the top cover 13 covers the upper opening of the upper shell 11. The air duct bracket 4 has an air duct 40 that connects to the air outlet 103. Since the present invention sets the air inlet 101 on the metal mesh ring 6 in the middle of the outer shell 1 and sets the air outlet 103 on the outer side of the upper shell 11, the length of the air duct 40 between the air inlet 101 and the air outlet 103 is relatively short, which can effectively avoid the phenomenon of air leakage, thereby ensuring a large wind force and a relatively large air volume, resulting in high wind efficiency, enhancing the user experience, and having an excellent cooling function.

[0048] The air supply assembly 2 includes a motor bracket 21 and a high-speed motor 22 installed inside the motor bracket 21. The upper end of the motor bracket 21 is fixedly installed to the lower end of the upper housing 11, and the upper end of the lower housing 12 is fixedly connected to the bottom of the motor bracket 21. The lower end of the motor bracket 21 is provided with an air inlet 210 connected to the ventilation duct 40. The metal mesh ring 6 is fixedly covered to the lower end of the motor bracket 21 in a detachable and replaceable manner, and the metal mesh ring 6 has a plurality of air inlet holes 101 communicating with the air inlet 210. The high-speed motor 22 has an air guide channel 200 communicating with the air inlet 210 and the air duct 40. Because the metal mesh ring 6 covers the air inlet 21... 0, thereby avoiding the large air inlet 210 being exposed, and the air inlet hole 101 of the metal mesh ring 6 allows air to enter, while the air inlet hole 101 of the metal mesh ring 6 is relatively small, thus effectively preventing foreign objects from entering and achieving the purpose of protecting the invention; in addition, the air inlet hole 101 of the metal mesh ring 6 of the present invention has relatively less wind resistance compared to plastic holes, and the air intake efficiency is higher; furthermore, the metal mesh ring 6 can be disassembled and replaced, and by replacing it with metal mesh rings 6 with air inlet holes 101 of different sizes, different usage requirements can be met, and different decorative effects can also be achieved, thereby enhancing the market competitiveness of the invention.

[0049] The control component 500 includes a battery holder 51, a battery 3 mounted on the battery holder 51, and a circuit board 5. The upper end of the battery holder 51 is fixedly connected to the lower end of the air duct support 4. The lower housing 12 is fitted around the battery holder 51, and the bottom cover 14 is fixed to the lower end of the battery holder 51 and seals the lower port of the lower housing 12. The circuit board 5 is provided with a stepless speed-regulating roller 52 for controlling the wind speed of the air supply component 2. The stepless speed-regulating roller 52 passes through the hole 121 provided in the lower housing 12 and is exposed on the surface of the lower housing 12. The stepless speed-regulating roller 52 is located below the air outlet 103. In this invention, the battery 3 and the circuit board 5 are mounted on the battery holder 51 to form a whole, which is the control component 500. This facilitates installation. At the same time, the air supply component 2 is located in the middle or upper part of the outer shell 1, making the upper part of the outer shell lighter and the lower part heavier, so as to make the user's grip comfortable. Furthermore, this invention employs a stepless speed-regulating roller 52 to precisely control the wind speed of the air supply component 2, making it extremely convenient to use and easy to operate. Moreover, the air inlet 101, air duct 40, and air outlet 103 are all located above the battery 3 and circuit board 5. Even if the battery 3 is heating up, the heat generated will not enter the air duct 40, thus not affecting the airflow entering the air duct 40. In other words, the air blown out by this invention will not be heated, ensuring a more comfortable airflow and providing a better cooling effect, thus enhancing the user experience.

[0050] The air inlet holes 101 are multiple and arranged in a ring around the middle periphery of the outer casing 1. This ensures sufficient air intake, thereby further improving the wind power, air volume, and wind efficiency of the invention. Specifically, the metal mesh ring 6 has a ring of air inlet holes 101.

[0051] A first sound-absorbing cotton 43 is filled between the top cover 13 and the upper end of the air duct support 4, and a second sound-absorbing cotton 44 is filled between the outer side of the air duct support 4 and the upper shell 11. Through the design of the first sound-absorbing cotton 43 and the second sound-absorbing cotton 44, the noise transmitted to the outside can be reduced, so that the noise heard by the user is reduced, thereby improving the user experience.

[0052] The air supply component 2 is located at the lower end of the air duct 40 and is used to draw in outside air through the air inlet 101 to form a wind. The wind passes through the air duct 40 and is discharged from the air outlet 103 to achieve the function of cooling down.

[0053] The diameter of the air inlet 101 is less than 2 mm. As a preferred embodiment, the diameter of the air inlet 101 is set to less than 1 mm, which can enable air intake and effectively prevent foreign objects from entering.

[0054] The motor bracket 21 is cylindrical. Its lower end has several thin ribs 211 and a base plate 212 integrally connected to the lower end of the ribs 211. An air inlet 210 is formed between adjacent thin ribs 211. One of the thin ribs 211 has a groove 213 on its outer side for accommodating the wires 220 of the high-speed motor 22. The groove 213 extends upwards through the upper surface of the motor bracket 21. The base plate 212 also has a wire hole 214 for the wires 220 to pass through. The side of the thin rib 211 has a wiring opening 215 corresponding to the wire hole 214. The groove 213, wiring opening 215, and wire hole 214 are designed to facilitate the routing of the wires 220 and prevent them from becoming tangled.

[0055] One of the thin ribs 211 has a strip-shaped positioning groove 216 on its outer side; the metal mesh ring 6 is formed by bending metal mesh into a ring and bending both ends at 90 degrees and then folding them in half. The inner side of the metal mesh ring 6 has a bent part 61 that protrudes from the outside to the inside. The bent part 61 is pressed into the strip-shaped positioning groove 216 from the outside to the inside, so that the metal mesh ring 6 is fixedly wrapped around the lower periphery of the motor bracket 21. The metal mesh ring 6 is fixedly wrapped around the lower periphery of the motor bracket 21. It is detachable and the assembly structure is stable.

[0056] The high-speed motor 22 is covered with a soft rubber shock-absorbing pad 23. The soft rubber shock-absorbing pad 23 contacts the air duct bracket 4 and the motor bracket 21. Through the design of the soft rubber shock-absorbing pad 23, it can effectively reduce the vibration generated by the high-speed motor body 223 during operation, thereby reducing noise and improving the user experience by reducing vibration.

[0057] Specifically, the high-speed motor 22 includes a cylindrical shell 221, a high-speed motor body 223 fixed within the cylindrical shell 221 by several ribs 222, and a fan blade 224 mounted on the lower shaft of the high-speed motor body 223. An air guide channel 200 connecting the air inlet is formed between the outer periphery of the high-speed motor body 223 and the inner wall of the cylindrical shell 221. The cylindrical shell 221 is fixed within the motor bracket 21. The high-speed motor 22 has a simple structure and comes with its own air guide channel 200, making it extremely convenient to assemble and use. The cylindrical shell 221 is also embedded in the lower end of the air duct bracket 4, connecting the air guide channel 200 with the air duct 40. The soft rubber shock-absorbing pad 23 is sleeved on the outside of the cylindrical shell 221.

[0058] The high-speed motor 22 may be a ducted motor.

[0059] The air duct support 4 is an integral structure. Figure 4 As shown; or, the duct support 4 is a two-piece structure, comprising a first duct frame 41 and a second duct frame 42 that are interlocked and fixed together. The first duct frame 41 is provided with a fastener 411, and the second duct frame 42 is provided with a fastener ring 421. The fastener 411 and the fastener ring 421 are interlocked and fixed together, facilitating installation. The first duct frame 41 is also provided with a positioning flange 412, and the second duct frame 42 is provided with a positioning groove 422 that matches the positioning flange 412. The positioning groove 422 and the positioning flange 412 are nested together and installed to form a stable position, ensuring the stability of the duct support 4 assembly structure. In this embodiment, the duct support 4 is a two-piece structure, as shown... Figure 3 , 5 As shown in Figure -8.

[0060] The air duct 40 is L-shaped, inverted L-shaped, or reverse L-shaped, so that the air outlet 103 is located on the outer side of the upper end of the outer casing 1.

[0061] The air duct 40 includes a straight section 401 connected to the air inlet 101, an arc-shaped section 402 connected to the straight section 401 and smaller in size than the straight section 401, and a horizontal section 403 connected to the arc-shaped section 402. The horizontal section 403 is connected to the air outlet 103, which is located on the outer side of the upper end of the outer casing 1. The air supply assembly 2 is located at the lower end of the straight section 401. During operation, the air supply component 2 draws in outside air through the air inlet 101 to form wind. This wind passes through the straight section 401 and enters the smaller arc section 402. At this time, the wind is compressed to a certain extent, which facilitates the increase of wind pressure and wind force. Finally, it is discharged through the horizontal section 403 and the air outlet 103, thus achieving the goal of blowing out a strong wind. At the same time, the arc section 402 converts the wind from the vertical direction to the horizontal direction. The inner wall of the arc section 402 is arc-shaped, which does not block the wind but guides the wind smoothly, thus ensuring that a large air volume is blown out of the air outlet 103, ensuring a large air volume and high wind efficiency.

[0062] A grid 404 is provided at the outlet of the horizontal section 403. This grid 404 may be integrally formed at the outlet of the horizontal section 403, as part of the duct support 4. Alternatively, the grid 404 may be a separate component, installed and fixed at the air outlet 103 and connected to the outlet of the horizontal section 403. In this embodiment, the grid 404 is integrally formed at the outlet of the horizontal section 403, as part of the duct support 4, which simplifies the structure and eliminates the need for additional installation of the grid 404.

[0063] The assembly structure of the battery holder 51, battery 3, and circuit board 5 is as follows: The battery holder 51 has a mounting groove 511 on one side, and the battery 3 is embedded in the mounting groove 511. This assembly structure is stable and easy to install. The circuit board 5 is fixed to the other side of the battery holder 51 by screws. The battery holder 51 is a plastic support, and several support pieces 510 are formed on the other side of the battery holder 51. These support pieces 510 support and abut against the circuit board 5, thereby ensuring that the circuit board 5 is more stably positioned on the other side of the battery holder 51, ensuring the stability of the assembly structure.

[0064] To ensure that the battery 3 can be installed more stably in the mounting slot 511, the following design is also made: the lower end of the battery holder 51 is provided with two left clamping arms 512 and right clamping arms 513 distributed to the left and right. The left clamping arms 512 and right clamping arms 513 protrude from the mounting slot 511, and the left clamping arms 512 and right clamping arms 513 clamp and fix the part of the battery 3 that protrudes from the mounting slot 511, so as to confine the battery 3 in the mounting slot 511. Its assembly structure is extremely stable, and the structure is also simple and easy to install.

[0065] The circuit board 5 is also snapped with a roller bracket 53, which has a roller plastic cover 54. The roller plastic cover 54 is also embedded in the hole 121. The roller plastic cover 54 has a window 541. The stepless speed adjustable roller 52 is rotatably installed in the roller bracket 53, and the stepless speed adjustable roller 52 partially passes through the window 541 and extends out of the roller plastic cover 54. The roller bracket 53 has elastic buckles 531 integrally formed on both sides. The circuit board 5 is provided with buckle positions 56 that are adapted to the elastic buckles 531. The elastic buckles 531 are snapped and fixed with the buckle positions 56. The assembly structure is simple and easy to install.

[0066] The lower housing 12 has a notch 120 at its lower end; the bottom cover 14 has a protrusion 141 corresponding to the notch 120, which is embedded and fixed in the notch 120 and exposed on the lower outer side of the lower housing 12. The outer side of the protrusion 141 also has a rope hole 142 for attaching a lanyard or hook. The bottom of the bottom cover 14 also has a first window 143 and a second window 144 located beside the first window 143. The lower end of the circuit board 5 also has a USB charging port 501 and an indicator light 502. The USB charging port 501 is exposed through the first window 143, and a light guide 145 is embedded in the second window 144, which is matched with the indicator light 502. The USB charging port 501 is exposed on the lower surface of the bottom cover 14, facilitating the connection of an external charging cable for charging the battery. The light guide 145 is used to transmit the light emitted by the indicator light 502, making the light more uniform and not dazzling, so as to achieve a good indication function. For example, the red light indicates that it is charging, while the green light indicates that it is fully charged.

[0067] The assembly method of the aforementioned portable high-speed fan includes the following steps:

[0068] S001: The circuit board 5 is secured to the battery holder 51 with the first screw, and the stepless speed regulating roller 52 is installed on the circuit board 5. At the same time, the battery 3 is installed on the battery holder 51 to form the control component 500.

[0069] S002: Insert and fix the lower end of the air duct bracket 4 to the upper end of the motor bracket 21 of the air supply assembly 2, so that the air duct 40 of the air duct bracket 4 is connected to the air guide channel 200 of the high-speed motor 22 in the air supply assembly 2.

[0070] S003: Insert the motor bracket 21 of the air supply assembly 2 into the battery bracket 51 and lock it with the second screw to fix the air supply assembly 2 to the upper end of the control assembly 500.

[0071] S004: The upper housing 11 is fitted onto the outside of the air duct bracket 4 and covers the upper part of the air supply assembly 2. The lower end of the upper housing 11 abuts against the retaining flange 217 in the middle of the motor bracket 21 to prevent the upper housing 11 from being inserted too downwards. The tensioning rib 218 on the outer surface of the motor bracket 21 contacts the inner wall of the upper housing 11 for tensioning and fixing, so that the upper housing 11 is fixed on the motor bracket 21. The assembly is simple, the installation is convenient, and the structure is stable. The upper end of the tensioning rib 218 is provided with an inclined surface, which facilitates the upper housing 11 The assembly is installed in a set and gradually forms a tensioned and fixed assembly. The flange 217 is located above the air inlet 210. The air duct 40 of the air duct bracket 4 corresponds to the air outlet 103 on the outer side of the upper end of the upper housing 11. Then, the top cover 13 is installed at the first stepped groove 111 at the upper opening of the upper housing 11. The top cover 13 also presses against the upper end of the air duct bracket 4 and is snapped and fixed to the upper end of the air duct bracket 4, so that the top cover 13 blocks the upper opening of the upper housing 11 and tightens the air duct bracket 4. Its assembly structure is simple and stable.

[0072] S005: The metal mesh ring 6 is fixedly wrapped around the lower end of the motor bracket 21 in a detachable and replaceable manner, and covers the air inlet 210. Alternatively, the metal mesh ring 6 is passed through the control component 500 from bottom to top and then fitted and fixed to the lower end of the motor bracket 21, and covers the air inlet 210. The air inlet hole 101 of the metal mesh ring 6 is connected to the air inlet 210, and the upper end of the metal mesh ring 6 is connected to the lower end of the upper housing 11. In this embodiment, the solution adopted is: the metal mesh ring 6 is fixedly wrapped around the lower end of the motor bracket 21 in a detachable and replaceable manner, and covers the air inlet 210.

[0073] S006: The lower housing 12 is fitted around the control component 500 from bottom to top, and the first retaining strip 122 of the lower housing 12 is fastened to the first buckle 218 at the lower end of the motor bracket 21 to achieve the purpose of pre-fixation. The lug 123 inside the lower housing 12 is connected to the limiting groove of the battery rack 51. The through hole of the lug 123 corresponds to the screw hole at the bottom of the limiting groove. The third screw 124 passes through the through hole and screw hole of the lug 123 and screws to fix it, so that the lower housing 12 is fixed together with the control component 500 and the motor bracket 21. The upper end of the lower housing 12 is connected to the lower end of the metal mesh ring 6. Its assembly structure is simple and stable.

[0074] S007: The bottom cover 14 is snapped into the lower port of the lower housing 12, and the bottom cover 14 is also locked to the lower end of the battery holder 51 by the fourth screw. The USB charging port 501 provided at the lower end of the circuit board 5 is exposed in the first window 143 at the bottom of the bottom cover 14, which facilitates charging by an external charging cable.

[0075] S008: The diaphragm 7 is attached and fixed to the bottom surface of the bottom cover 14, covering the fourth screw. This serves a decorative purpose and also protects the fourth screw from oxidation and rust when exposed to moisture, thereby improving its service life.

[0076] The assembly method of the above-mentioned portable high-speed fan is simple, scientific and reasonable, and can improve assembly efficiency and ensure the stability of the assembly structure of the portable high-speed fan of the present invention.

[0077] Of course, the above description is only a specific embodiment of the present invention and is not intended to limit the scope of the present invention. All equivalent changes or modifications made to the structure, features and principles described in the claims of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A portable high-speed fan, characterized in that: It includes: The cylindrical outer shell (1) includes a top cover (13), a cylindrical upper shell (11), a metal mesh ring (6), a cylindrical lower shell (12), and a bottom cover (14) connected from top to bottom. An air outlet (103) is provided on the outer side of the upper end of the upper shell (11), and the lower shell (12) is provided as a handhold for people to hold. The air duct support (4) is embedded and fixed in the upper part of the upper housing (11), and the top cover (13) is fixedly installed on the upper end of the air duct support (4), and the top cover (13) covers the upper opening of the upper housing (11). The air duct support (4) has an air duct (40) that connects to the air outlet (103). The air supply assembly (2) includes a motor bracket (21) and a high-speed motor (22) installed in the motor bracket (21). The upper end of the motor bracket (21) is fixedly installed with the lower end of the air duct bracket (4). The upper end of the lower housing (12) is fixedly connected to the bottom of the motor bracket (21). The lower end of the motor bracket (21) is provided with an air inlet (210) connected to the air duct (40). The metal mesh ring (6) is fixedly covered with the lower end of the motor bracket (21) in a detachable and replaceable manner. The metal mesh ring (6) has a plurality of air inlet holes (101) connected to the air inlet (210). The high-speed motor (22) has an air guide channel (200) connecting the air inlet (210) and the air duct (40). The control component (500) includes a battery rack (51) and a battery (3) and a circuit board (5) mounted on the battery rack (51). The upper end of the battery rack (51) is also fixedly connected to the lower end of the motor bracket (21). The lower housing (12) is sleeved around the battery rack (51), and the bottom cover (14) is fixed to the lower end of the battery rack (51) and covers the lower port of the lower housing (12). The circuit board (5) is provided with a stepless speed regulating roller (52) for controlling the wind speed of the air supply component (2). The stepless speed regulating roller (52) passes through the hole (121) provided in the lower housing (12) to be exposed outside the surface of the lower housing (12), and the stepless speed regulating roller (52) is located below the air outlet (103). The high-speed motor (22) includes a cylindrical shell (221), a high-speed motor body (223) fixed inside the cylindrical shell (221) by a number of ribs (222), and a fan blade (224) installed on the lower end shaft of the high-speed motor body (223). An air guide channel (200) connecting the air inlet is formed between the outer periphery of the high-speed motor body (223) and the inner wall of the cylindrical shell (221). The cylindrical shell (221) is fixed inside the motor bracket (21). The motor bracket (21) is cylindrical. The lower end of the motor bracket (21) has several thin ribs (211) and a base plate (212) integrally connected to the lower end of the thin ribs (211). An air inlet (210) is formed between two adjacent thin ribs (211). A wire groove (213) for accommodating the wire (220) of the high-speed motor (22) is provided on the outer side of one of the thin ribs (211). The wire groove (213) extends upward and penetrates the upper end face of the motor bracket (21). The base plate (212) is also provided with a wire hole (214) for the wire (220) to pass through. The side of the thin rib (211) is provided with a wiring opening (215) corresponding to the wire hole (214). One of the thin ribs (211) has a strip-shaped positioning groove (216) on its outer side; the metal mesh ring (6) is bent into a ring shape by bending the metal mesh, and the two ends of the metal mesh are bent at 90 degrees to form a bent part (61) protruding from the outside to the inside on the inner side of the metal mesh ring (6). The bent part (61) is pressed into the strip-shaped positioning groove (216) from the outside to the inside, so that the metal mesh ring (6) is fixedly wrapped around the lower periphery of the motor bracket (21).

2. A portable high-speed fan according to claim 1, characterized in that: The air duct (40) includes a straight section (401) connected to the air inlet (101), an arc section (402) connected to the straight section (401) and smaller in size than the straight section (401), and a horizontal section (403) connected to the arc section (402). The horizontal section (403) is connected to the air outlet (103), which is located on the outer side of the upper end of the outer shell (1). The air supply assembly (2) is located at the lower end of the straight section (401).

3. A portable high-speed fan according to claim 1, characterized in that: A first sound-absorbing cotton (43) is filled between the top cover (13) and the upper end of the air duct support (4), and a second sound-absorbing cotton (44) is filled between the outer side of the air duct support (4) and the upper shell (11); a soft rubber shock-absorbing pad (23) is fitted on the outside of the high-speed motor (22), and the soft rubber shock-absorbing pad (23) is in contact with the air duct support (4) and the motor support (21).

4. A portable high-speed fan according to any one of claims 1-3, characterized in that: The battery rack (51) has a mounting groove (511) on one side, the battery (3) is embedded in the mounting groove (511), and the circuit board (5) is fixed to the other side of the battery rack (51) by screws.

5. A portable high-speed fan according to claim 4, characterized in that: The lower end of the battery holder (51) is also provided with two left clamping arms (512) and right clamping arms (513) distributed on the left and right sides. The left clamping arms (512) and right clamping arms (513) protrude from the mounting groove (511), and the left clamping arms (512) and right clamping arms (513) clamp and fix the part of the battery (3) protruding from the mounting groove (511) to confine the battery (3) in the mounting groove (511).

6. A portable high-speed fan according to claim 1, characterized in that: The circuit board (5) is also snapped with a roller bracket (53), which is provided with a roller plastic cover (54). The roller plastic cover (54) is also embedded in the hole (121). The roller plastic cover (54) has a window (541). The stepless speed-regulating roller (52) is rotatably installed in the roller bracket (53), and the stepless speed-regulating roller (52) partially protrudes out of the roller plastic cover (54) through the window (541). The roller bracket (53) has elastic buckles (531) integrally formed on both sides. The circuit board (5) is provided with a buckle position (56) that matches the elastic buckle (531). The elastic buckle (531) and the buckle position (56) are snapped together.

7. A portable high-speed fan according to claim 1, characterized in that: The lower housing (12) has a notch (120) at its lower end; the bottom cover (14) has a protrusion (141) at the position corresponding to the notch (120), the protrusion (141) is embedded and fixed in the notch (120) and exposed on the outer side of the lower end of the lower housing (12), and the outside of the protrusion (141) is also provided with a rope hole (142) for attaching a hanging rope or hook; the bottom of the bottom cover (14) is also provided with a first window hole (143) and a second window hole (144) located next to the first window hole (143); the lower end of the circuit board (5) is also provided with a USB charging interface (501) and an indicator light (502), the USB charging interface (501) is exposed in the first window hole (143), and a light guide (145) is embedded in the second window hole (144), the light guide (145) is matched and installed with the indicator light (502).

8. A method for assembling a portable high-speed fan as described in claim 1, characterized in that: It includes the following steps: S001: Secure the circuit board (5) to the battery holder (51) with the first screw, install the continuously variable speed roller (52) on the circuit board (5), and install the battery (3) on the battery holder (51) to form a control assembly (500). S002: Insert and fix the lower end of the air duct bracket (4) to the upper end of the motor bracket (21) of the air supply assembly (2), so that the air duct (40) of the air duct bracket (4) is connected to the air guide channel (200) of the high-speed motor (22) in the air supply assembly (2); S003: Insert the motor bracket (21) of the air supply assembly (2) into the battery rack (51) and lock it with the second screw to fix the air supply assembly (2) to the upper end of the control assembly (500); S004: The upper housing (11) is fitted onto the outside of the air duct support (4) and covers the upper part of the air supply assembly (2). The lower end of the upper housing (11) abuts against the flange (217) in the middle of the motor support (21), and the tensioning rib on the outer surface of the motor support (21) contacts the inner wall of the upper housing (11) for tensioning and fixing, so that the upper housing (11) is fixed on the motor support (21). The flange (217) is located at the air inlet (210). Above, the air duct (40) of the air duct bracket (4) corresponds to the air outlet (103) on the outer side of the upper end of the upper shell (11). Then, the top cover (13) is installed at the first stepped groove (111) at the upper opening of the upper shell (11), and the top cover (13) also presses against the upper end of the air duct bracket (4) and is snapped and fixed to the upper end of the air duct bracket (4), so that the top cover (13) blocks the upper opening of the upper shell (11) and tightens the air duct bracket (4). S005: The metal mesh ring (6) is fixedly wrapped around the lower end of the motor bracket (21) in a detachable and replaceable manner, and covers the air inlet (210); or, the metal mesh ring (6) is passed through the control component (500) from bottom to top and then fitted and fixed to the lower end of the motor bracket (21), and covers the air inlet (210); wherein, the air inlet hole (101) of the metal mesh ring (6) is connected to the air inlet (210), and the upper end of the metal mesh ring (6) is connected to the lower end of the upper housing (11); S006: The lower housing (12) is fitted around the control component (500) from bottom to top, and the first clip (122) of the lower housing (12) is fastened to the first buckle (218) at the lower end of the motor bracket (21), and the lug (123) inside the lower housing (12) is connected to the limiting groove of the battery rack (51), the through hole of the lug (123) corresponds to the screw hole at the bottom of the limiting groove, and the third screw (124) is screwed through the through hole and screw hole of the lug (123) to fix the lower housing (12) together with the control component (500) and the motor bracket (21). The upper end of the lower housing (12) is connected to the lower end of the metal mesh ring (6). S007: The bottom cover (14) is snapped into the lower port of the lower housing (12), and the bottom cover (14) is also locked to the lower end of the battery holder (51) by the fourth screw, and the USB charging port (501) provided at the lower end of the circuit board (5) is exposed in the first window hole (143) at the bottom of the bottom cover (14); S008: Attach and fix the diaphragm (7) to the bottom surface of the cover (14) and cover the fourth screw.

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