Portable high-speed fan and assembling method thereof

Abstract

The invention discloses a portable high-speed fan and an assembling method thereof.The portable high-speed fan comprises a straight-barrel-shaped outer shell which comprises a top cover, an upper shell body, a metal net ring, a lower shell body and a bottom cover, an air outlet is formed in the outer side of the upper shell body, and the lower shell body is arranged to be a handheld part; the air duct support is fixed to the upper portion of the upper shell, and the top cover is fixed to the upper end of the air duct support; the air supply assembly comprises a motor support and a high-speed motor, the motor support is fixedly installed on the upper shell, the lower shell is fixedly connected with the motor support, an air inlet communicated with the air duct is formed in the lower end of the motor support, and the metal net ring wraps the lower end of the motor support and is provided with an air inlet hole communicated with the air inlet; the high-speed motor is provided with an air guide channel communicated with the air inlet and the air duct; the control assembly comprises a battery rack, a battery and a circuit board, the battery rack is fixedly connected with the air duct support, the lower shell is arranged on the periphery of the battery rack in a sleeving mode, and the bottom cover is fixed to the lower end of the battery rack and covers a lower port of the lower shell; and a stepless speed regulation roller arranged on the circuit board is exposed out of the surface of the lower shell.

Description

Technical Field

[0001] The invention relates to the technical field of fan products, and in particular to a portable high-speed fan and an assembling method thereof. Background Art

[0002] A fan is a device that generates air to cool people down on hot days. An electric fan is a device that generates airflow with electricity. When the fan is powered on, it turns into natural wind to cool people down. In order to make it easier for people to take it, a portable handheld fan has appeared on the market. It can be held in the hand to achieve the effect of cooling down. It is very convenient to use and is the best choice for hot summer days.

[0003] The Chinese utility model patent with application number 202321574046.5 discloses a handheld fan, which includes an air supply part and a handheld part. The air supply part includes an inner shell, an outer shell and a fan assembly. The inner shell is formed with an air channel, an air inlet connected to one side of the air channel and an air outlet connected to the other side of the air channel. The fan assembly is arranged in the air channel. The outer shell is used to cover the outside of the inner shell, and the outer shell has a mounting port; the handheld part includes a handheld shell, a mounting mechanism and a fixing part. The handheld shell cover is arranged outside the mounting mechanism, the handheld shell extends into the mounting port, and the fixing part passes through the outer shell and the handheld shell in sequence and then is connected to the mounting mechanism. Combined with the appendix of this patent (202321574046.5) Figure 3 It can be seen that the above-mentioned handheld fan is T-shaped as a whole, and its shape is similar to that of a hair dryer, and its design is popular. In addition, the handheld fan of this shape has its air supply part horizontally placed on the upper end of the handheld part, so that the upper end of the handheld fan (i.e., the air supply part) is large in size and requires a large space, which makes it inconvenient to carry.

[0004] In view of this, the inventor proposes the following technical solution. Summary of the invention

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide a portable high-speed fan and an assembling method thereof.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions: the portable high-speed fan comprises: a straight cylindrical outer shell, which comprises a top cover, a cylindrical upper shell, a metal mesh ring, a cylindrical lower shell, and a bottom cover which are connected in sequence from top to bottom, an air outlet is arranged on the outer side of the upper end of the upper shell, and the lower shell is arranged as a hand-held part for human hand to hold; an air duct bracket, which is embedded and fixed on 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 end opening of the upper shell, and the air duct bracket has an air duct connected to the air outlet; an air supply component, which comprises a motor bracket and a high-speed motor installed in the motor bracket, the upper end of the motor bracket is fixedly installed on the lower end of the upper shell, the upper end of the lower shell is fixedly connected to the bottom of the motor bracket, and the motor bracket is fixedly installed on the upper end of the upper shell, and the upper end of the lower shell is fixedly connected to the bottom of the motor bracket. An air inlet connected to the air duct is provided at the lower end of the motor bracket, and the metal mesh ring is fixedly covered on the lower end of the motor bracket in a detachable and replaceable manner, and the metal mesh ring has a plurality of air inlet holes connected to the air inlet; the high-speed motor has an air guide channel connecting the air inlet and the air duct; a control component, which includes a battery rack and a battery and a circuit board installed 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 shell is sleeved on the periphery of the battery rack, and the bottom cover is fixed to the lower end of the battery rack and covers the lower port of the lower shell; a stepless speed regulating roller for controlling the wind speed of the air supply assembly is provided on the circuit board, the stepless speed regulating roller passes through the hole set in the lower shell to be exposed outside the surface of the lower shell, 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 a plurality of thin ribs and a bottom plate integrally connected to the lower ends of the thin ribs, the 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 through the upper end surface of the motor bracket, and the bottom plate is also provided with a wire hole for the wire to pass through, and the side of the thin rib is provided with a wiring opening corresponding to the wire hole.

[0008] Furthermore, in the above technical solution, a strip positioning groove is provided on the outer side of one of the thin ribs; the metal mesh ring is formed by bending a metal mesh into a ring, and the two ends are bent 90 degrees and then folded in half, and a bending portion protruding from the outside to the inside is formed on the inner side of the metal mesh ring, and the bending portion is pressed into the strip positioning groove from the outside to the inside, so that the metal mesh ring is fixedly wrapped around the outer periphery of the lower end 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 section connected to the straight section and smaller in size than the straight section, and a horizontal section connected to the arc section, the horizontal section is connected to the air outlet, and the air outlet is arranged on the outer side of the upper end of the outer shell; the air supply assembly is arranged 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 bracket, and a second sound-absorbing cotton is filled between the outer side of the air duct bracket and the upper shell body; a soft rubber shock-absorbing pad is provided on the outside of the high-speed motor, and the soft rubber shock-absorbing pad is in contact with the air duct bracket and the motor bracket.

[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 rack is also provided with two left clamp arms and right clamp arms distributed on the left and right, and the left clamp arm and the right clamp arm both protrude outside the mounting groove, and the left clamp arm and the right clamp arm are clamped and fixed to 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 snap-fitted with a roller bracket, the roller bracket is provided with a roller plastic cover, the roller plastic cover is also embedded in the hole, the roller plastic cover has a window, the stepless speed regulation roller is rotatably installed in the roller bracket, and the stepless speed regulation roller partially passes through the window and is outside the roller plastic cover, wherein elastic buckles are integrally formed on both sides of the roller bracket, the circuit board is provided with a buckle position adapted to the elastic buckle, and the elastic buckle is snap-fixed to the buckle position.

[0014] Furthermore, in the above technical solution, a notch is provided at the lower end of the lower shell body; a protrusion is provided at a position of the bottom cover corresponding to the notch, the protrusion is embedded and fixed in the notch, and is exposed on the outer side surface of the lower end of the lower shell body, and a rope hole for installing a lanyard or a hanging buckle is also provided on the outer side of the protrusion; a first window hole and a second window hole located next to the first window hole are also provided at the bottom of the bottom cover, a USB charging port and an indicator light are also provided at the lower end of the circuit board, the USB charging port is penetrated and exposed in the first window hole, and a light guide is embedded and installed in the second window hole, and the light guide is installed to match the indicator light.

[0015] A method for assembling a portable high-speed fan comprises the following steps: S001: The circuit board is fixed to the battery rack by a first screw, and the stepless speed regulating roller is installed on the circuit board, and the battery is also installed on the battery rack to form a control assembly; S002: Insert and fix the lower end of the air duct bracket and the upper end of the motor bracket of the air supply assembly, so that the air duct of the air duct bracket is connected with the air guide channel of the high-speed motor in the air supply assembly; S003: Insert the motor bracket of the air supply assembly onto the battery rack and fasten it with a second screw to fix the air supply assembly to the upper end of the control assembly; S004: The upper shell is sleeved on the outside of the air duct bracket and covers the upper part of the air supply assembly, the lower end of the upper shell is against the retaining edge in the middle of the motor bracket, and the tensioning ribs on the outer surface of the motor bracket are in contact with the inner wall of the upper shell to tighten and fix the upper shell to fix the motor bracket, wherein the retaining edge is located above the air inlet, and the air duct of the air duct bracket corresponds to the air outlet on the outer side of the upper end of the upper shell, and then the top cover is installed at the first step groove at the upper end opening of the upper shell, and the top cover also presses against the upper end of the air duct bracket and is fixed with the upper end of the air duct bracket, so that the top cover blocks the upper end opening of the upper shell and tightens the air duct bracket; 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 is passed through the control component from bottom to top and then fixed on 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 shell; S006: The lower shell is sleeved on the periphery of the control component from bottom to top, and the first clip of the lower shell is fixed to the first inverted clip at the lower end of the motor bracket, and the lug in the lower shell is docked with the limiting groove of the battery rack, the through hole of the lug corresponds to the screw hole at the bottom of the limiting groove, and the third screw passes through the through hole of the lug and is screwed to the screw hole to fix the lower shell with the control component and the motor bracket, wherein the upper end of the lower shell is connected to the lower end of the metal mesh ring; S007: buckle the bottom cover into the lower port of the lower shell, and the bottom cover is also locked with the lower end of the battery rack by a fourth screw, and the USB charging interface provided at the lower end of the circuit board is penetrated and exposed in the first window hole at the bottom of the bottom cover; S008: Fix the diaphragm to the bottom surface of the bottom cover and cover the fourth screw.

[0016] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: 1. The shell of the present invention is in the shape of a straight cylinder, so that the overall size of the present invention is relatively small, especially the width of the upper end of the shell is small, and the space it needs is relatively small, so that it is extremely convenient to carry and store; and the top cover, upper shell, metal mesh ring, lower shell, and bottom cover of the present invention are connected in sequence from top to bottom to form a shell, and its assembly structure is stable and the appearance is simple, and the decorative effect can be enhanced by the metal mesh ring; the middle part of the shell of the present invention is set as a metal mesh ring, and the lower part of the shell is set as a hand-held part for human hand holding with the metal mesh ring as the boundary, which plays a demarcation function, so that the user can clearly know the position of the hand-held part, so as to quickly hold the hand-held part to realize the hand-held shell, which is more convenient to use. At the same time, the air inlet provided by the metal mesh ring is located on the periphery of the middle part of the shell and above the hand-held part, which does not affect the air intake of the air inlet, that is, after the user holds the hand-held part, the air inlet will not be covered, ensuring that the air inlet can normally intake air.

[0017] 2. Since the present invention arranges the air inlet on the metal mesh ring in the middle of the shell, and the air outlet on the outside of the upper shell, the length of the air duct between the air inlet and the air outlet is relatively short, which can effectively avoid air leakage, thereby ensuring that the wind force is relatively large and the air volume is relatively large, so that the wind efficiency is high, which can enhance the user experience and has an excellent function of cooling down.

[0018] 3. The present invention is installed on the battery rack through the battery and the circuit board to form a whole, which is a control component, and is easy to install. At the same time, the air supply component is arranged in the middle or upper part of the shell, so that the weight of the upper end of the shell is lighter, and the weight of the lower end of the shell is heavier, so that the user can hold it comfortably. And the present invention adopts a stepless speed regulation roller to accurately control the wind speed of the air supply component, which is extremely convenient to use and easy to operate. Furthermore, the air inlet, air duct and air outlet are all arranged above the battery and the circuit board. Even if the battery is heating up, the heat generated by it will not enter the air duct, so as not to affect the wind entering the air duct, that is, the wind blown out by the present invention will not be heated, ensuring that the wind blown out by the present invention is more comfortable, so as to have a better cooling function and enhance the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a stereogram of the present invention; Figure 2 It is a stereogram of another viewing angle of the present invention; Figure 3 is a cross-sectional view of the present invention; Figure 4 is a three-dimensional exploded view of the present invention; Figure 5 is a three-dimensional diagram of the air duct support in the present invention; Figure 6 It is a three-dimensional exploded view of the air duct support in the present invention; Figure 7 It is an assembly diagram of the air duct support and the air supply assembly in the present invention; Figure 8 is a three-dimensional diagram of the second air duct frame of the present invention; Fig. 9 It is an assembly diagram of the metal mesh ring and the air supply component in the present invention; Fig.10 is a three-dimensional diagram of the high-speed motor of the present invention; Fig.11 It is an assembly exploded view of the metal mesh ring and the air supply component in the present invention; Fig.12 It is a stereogram of the high-speed motor of the present invention from another perspective; Fig.13 is a three-dimensional diagram of the control assembly of the present invention; Fig.14 is a stereogram of the control assembly of the present invention from another perspective; Fig.15 is a three-dimensional diagram of the lower housing of the present invention; Fig.16 It is an assembly step diagram of the present invention. DETAILED DESCRIPTION

[0020] The present invention is further described below in conjunction with specific embodiments and drawings.

[0021] See Figure 1-16 As shown, a portable high-speed fan comprises: a straight cylindrical housing 1, an air supply component 2, an air duct bracket 4 and a control component 500.

[0022] The shell 1 is in a straight cylindrical shape, and 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, which are connected in sequence from top to bottom. The upper end of the upper shell 11 is provided with an air outlet 103 on the outer side, and the lower shell 12 is provided as a hand-held portion for a person to hold; the shell 1 in the present invention is in a straight cylindrical shape, so that the overall size of the present invention is relatively small, especially the width of the upper end of the shell 1 is small, and the space it occupies is relatively small, so that it is extremely convenient to carry and store; and the top cover 13, The upper shell 11, the metal mesh ring 6, the lower shell 12, and the bottom cover 14 are connected in sequence from top to bottom to form a shell 1, which has a stable assembly structure and a simple appearance, and the metal mesh ring 6 can enhance the decorative effect; the middle part of the shell 1 of the present invention is set with a metal mesh ring 6, and the lower part of the shell 1 is set as a hand-held part 102 for human hand holding with the metal mesh ring 6 as the boundary, which plays a dividing function, so that the user can clearly know the position of the hand-held part 102, so as to quickly hold the hand-held part 102 to realize the hand-held shell 1, which is more convenient to use. At the same time, the air inlet hole set by the metal mesh ring 6 is located on the periphery of the middle part of the shell 1 and above the hand-held part 102, which does not affect the air intake of the air inlet hole 101, that is, after the user holds the hand-held part 102, the air inlet hole 101 will not be covered, ensuring that the air inlet hole 101 can take in air normally.

[0023] The air duct bracket 4 is embedded and fixed on 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 end opening of the upper shell 11, and the air duct bracket 4 has an air duct 40 connected to the air outlet 103; wherein, 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 air leakage, thereby ensuring that the wind force is large and the air volume is relatively large, so that the wind efficiency is high, which can enhance the user experience and has an excellent function of cooling down.

[0024] 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 upper shell 11, and the upper end of the lower shell 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 on 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 connected to the air inlet 210; the high-speed motor 22 has an air guide channel 200 connected to the air inlet 210 and the air duct 40; because the metal mesh ring 6 covers the air inlet 21 0, thereby preventing the larger air inlet 210 from being exposed, and the air inlet hole 101 of the metal mesh ring 6 can realize air intake, and the air inlet hole 101 of the metal mesh ring 6 is relatively small in size, thereby effectively preventing foreign matter from entering, thereby achieving the purpose of protecting the present invention; in addition, the air inlet hole 101 of the metal mesh ring 6 of the present invention has relatively less wind resistance than the plastic hole, and has higher air intake efficiency; furthermore, the metal mesh ring 6 can be disassembled and replaced. By replacing the metal mesh ring 6 with the air inlet holes 101 of different sizes, different use requirements can be met, and different decorative effects can be achieved, thereby enhancing the market competitiveness of the present invention.

[0025] The control assembly 500 includes a battery rack 51, 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 air duct bracket 4. The lower shell 12 is sleeved on the periphery of 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 shell 12. The circuit board 5 is provided with a stepless speed regulating roller 52 for controlling the wind speed of the air supply assembly 2. The stepless speed regulating roller 52 passes through the hole 121 set in the lower shell 12 to be exposed outside the surface of the lower shell 12, and the stepless speed regulating roller 52 is located below the air outlet 103. The present invention is provided with a battery 3 and a circuit board 5 mounted on the battery rack 51 to form a whole, which is a control assembly 500, which is easy to install. At the same time, the air supply assembly 2 is arranged in the middle or upper part of the shell 1, so that the weight of the upper end of the shell is lighter, and the weight of the lower end of the shell is heavier, so that the user can feel comfortable when holding it. The present invention uses a stepless speed regulating roller 52 to accurately control the wind speed of the air supply component 2, which is extremely convenient to use and easy to operate. Furthermore, the air inlet 101, the air duct 40 and the air outlet 103 are all arranged above the battery 3 and the circuit board 5. Even if the battery 3 is heating up, the heat generated by it will not enter the air duct 40, so as not to affect the wind entering the air duct 40, that is, the wind blown out by the present invention will not be heated, ensuring that the wind blown out by the present invention is more comfortable, so as to have a better cooling function and improve the user experience.

[0026] The air inlet holes 101 are multiple and are distributed in a circle around the middle of the housing 1 , which can ensure the air intake, thereby further improving the wind force, air volume and wind effect of the present invention.

[0027] A first sound-absorbing cotton 43 is also filled between the top cover 13 and the upper end of the air duct bracket 4, and a second sound-absorbing cotton 44 is also filled between the outer side of the air duct bracket 4 and the upper shell 11. Through the design of the first sound-absorbing cotton 43 and the second sound-absorbing cotton 44, it is possible to reduce the noise transmitted outward, reduce the noise heard by the user, and thus improve the user experience.

[0028] The air supply assembly 2 is disposed at the lower end of the air duct 40 and is used to draw in external air from the air inlet 101 to form wind, and the wind is discharged from the air outlet 103 after passing through the air duct 40, thereby achieving the function of cooling down.

[0029] The aperture of the air inlet hole 101 is less than 2 mm. As a preferred embodiment, the aperture of the air inlet hole 101 is set to be less than 1 mm, which can achieve air intake and effectively prevent foreign matter from entering.

[0030] The motor support 21 is cylindrical, and has a plurality of thin ribs 211 and a bottom plate 212 integrally connected to the lower ends of the thin ribs 211 at the lower end of the motor support 21. The air inlet 210 is formed between two adjacent thin ribs 211, and 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 through the upper end surface of the motor support 21, and the bottom 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. The design of the wire groove 213, the wiring opening 215 and the wire hole 214 is to facilitate the wiring of the wire 220 and prevent the wire 220 from being messy.

[0031] A strip positioning groove 216 is arranged on the outside of one of the thin ribs 211; the metal mesh ring 6 is formed by bending a metal mesh into a ring shape, and the two ends are bent 90 degrees and then folded in half, and a bending portion 61 protruding from the outside to the inside is formed on the inside of the metal mesh ring 6, and the bending portion 61 is pressed into the strip positioning groove 216 from the outside to the inside, so that the metal mesh ring 6 is fixedly wrapped around the outer periphery of the lower end of the motor bracket 21, so that the metal mesh ring 6 is fixedly wrapped around the outer periphery of the lower end of the motor bracket 21, and it is detachable and assembled, and the assembly structure is stable.

[0032] The high-speed motor 22 is externally covered with a soft-gel shock-absorbing pad 23, which is in contact with the air duct bracket 4 and the motor bracket 21. Through the design of the soft-gel shock-absorbing pad 23, it can effectively reduce the vibration generated by the high-speed motor body 223 during operation, thereby reducing noise, while reducing vibration and improving user experience.

[0033] Specifically, the high-speed motor 22 includes a cylindrical shell 221, a high-speed motor body 223 fixed in the cylindrical shell 221 by a plurality of ribs 222, and a fan blade 224 installed on the lower end of the high-speed motor body 223. The outer periphery of the high-speed motor body 223 and the inner wall of the cylindrical shell 221 form an air guide channel 200 connected to the air inlet, and the cylindrical shell 221 is fixed in the motor bracket 21. The high-speed motor 22 has a simple structure and comes with an air guide channel 200, which is very convenient to assemble and use. Among them, the cylindrical shell 221 is also embedded in the lower end of the air duct bracket 4, so that the air guide channel 200 is connected to the air duct 40, and the outer surface of the cylindrical shell 221 is provided with the soft rubber shock-absorbing pad 23.

[0034] The high-speed motor 22 may be a ducted motor.

[0035] The air duct support 4 is an integrated structure. Figure 4 As shown; or, the air duct bracket 4 is a split two-piece structure, which includes a first air duct bracket 41 and a second air duct bracket 42 that are buckled and fixed together, the first air duct bracket 41 is provided with a buckle body 411, and the second air duct bracket 42 is provided with a buckle ring 421, the buckle body 411 and the buckle ring 421 are buckled and fixed, which is convenient for installation. Among them, the first air duct bracket 41 is also provided with a positioning flange 412, and the second air duct bracket 42 is provided with a positioning groove 422 adapted to the positioning flange 412, and the positioning groove 422 and the positioning flange 412 are nested and installed with each other to form a stable positioning, thereby ensuring the stability of the assembly structure of the air duct bracket 4. In this embodiment, the air duct bracket 4 is a split two-piece structure, as shown Figure 3 , 5 -8.

[0036] The air duct 40 is in an L-shape, an inverted L-shape, or a reversed L-shape, so that the air outlet 103 is disposed on the outer side of the upper end of the housing 1 .

[0037] 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 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, and the air outlet 103 is arranged on the outer side of the upper end of the shell 1; the air supply component 2 is arranged at the lower end of the straight section 401. When working, the air supply component 2 draws in external air from the air inlet 101 to form wind, and the wind enters the arc section 402 with a smaller size through the straight section 401. At this time, the wind will be compressed to a certain extent, which makes it easier to increase the wind pressure and then increase the wind force. Finally, the wind is discharged through the horizontal section 403 and the air outlet 103, so as to achieve the effect of blowing out strong wind. At the same time, it uses the arc section 402 to convert the wind from the vertical direction to the horizontal direction. The inner wall of the arc section 402 is arc-shaped, which will not block the wind, but will smoothly guide the wind, thereby ensuring that a large amount of air is blown out of the air outlet 103, ensuring that the amount of air blown out is large and the wind efficiency is high.

[0038] A grid 404 is provided at the outlet of the horizontal section 403. The grid 404 may be integrally formed at the outlet of the horizontal section 403 and be a part of the air duct support 4. Alternatively, the grid 404 is a separate component, which is fixed at the air outlet 103 and docked with the outlet of the horizontal section 403. In this embodiment, the grid 404 is integrally formed at the outlet of the horizontal section 403 and is a part of the air duct support 4, which has a simpler structure and does not require the additional installation of the grid 404.

[0039] The assembly structure of the battery rack 51, the battery 3 and the circuit board 5 is as follows: one side of the battery rack 51 has a mounting groove 511, and the battery 3 is embedded and installed in the mounting groove 511, and its assembly structure is stable and easy to install. The circuit board 5 is fixed to the other side of the battery rack 51 by screws, wherein the battery rack 51 is a plastic bracket, and a plurality of support sheets 510 are formed on the other side of the battery rack 51, and the support sheets 510 support against the circuit board 5, thereby ensuring that the circuit board 5 is more stably positioned on the other side of the battery rack 51, and ensuring the stability of the assembly structure.

[0040] In order to ensure that the battery 3 can be installed in the installation groove 511 more stably, the following design is also made: the lower end of the battery rack 51 is also provided with two left clamping arms 512 and right clamping arms 513 distributed on the left and right, and the left clamping arms 512 and the right clamping arms 513 both protrude outside the installation groove 511, and the left clamping arms 512 and the right clamping arms 513 are clamped and fixed to the part of the battery 3 protruding outside the installation groove 511 to confine the battery 3 in the installation groove 511. Its assembly structure is extremely stable, and the structure is also simple and easy to install.

[0041] The circuit board 5 is also snap-fitted with a roller bracket 53, and a roller plastic cover 54 is provided on the roller bracket 53. The roller plastic cover 54 is also embedded in the hole 121, and the roller plastic cover 54 has a window 541. The stepless speed regulation roller 52 is rotatably installed in the roller bracket 53, and the stepless speed regulation roller 52 partially passes through the window 541 and is outside the roller plastic cover 54, wherein elastic buckles 531 are integrally formed on both sides of the roller bracket 53, and the circuit board 5 is provided with a buckle position 56 adapted to the elastic buckle 531, and the elastic buckle 531 is snap-fitted to the buckle position 56, and its assembly structure is simple and easy to install.

[0042] The lower end of the lower shell 12 is provided with a notch 120; the bottom cover 14 is provided with a protrusion 141 at a 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 shell 12, and the outer side of the protrusion 141 is also provided with a rope hole 142 for installing a hanging rope or a hanging buckle; 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, and 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 penetrated and exposed in the first window hole 143, and a light guide 145 is embedded and installed in the second window hole 144, and the light guide 145 is installed in matching with the indicator light 502. The USB charging interface 501 is exposed outside the lower end surface of the bottom cover 14, which is convenient for connecting an external charging cable to charge the battery. The light guide 145 is used to transmit the light emitted by the indicator light 502, making the light more uniform and less dazzling, so as to achieve a good indication function. For example, the red light indicates that charging is in progress, and the green light indicates that charging is completed, that is, fully charged.

[0043] The above-mentioned method for assembling the portable high-speed fan comprises the following steps: S001: The circuit board 5 is fixed to the battery rack 51 by means of a first screw, and the stepless speed regulating roller 52 is installed on the circuit board 5, and the battery 3 is also installed on the battery rack 51, so as to form a control assembly 500; S002: Insert and fix the lower end of the air duct bracket 4 and 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 with 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 component 2 onto the battery rack 51 and fasten it with a second screw to fix the air supply component 2 to the upper end of the control component 500.

[0044] S004: The upper shell 11 is sleeved on the outside of the air duct bracket 4 and covers the upper part of the air supply component 2. The lower end of the upper shell 11 abuts against the retaining edge 217 in the middle of the motor bracket 21 to prevent the upper shell 11 from being excessively inserted downward, and the tensioning rib 218 on the outer surface of the motor bracket 21 contacts the inner wall of the upper shell 11 to tighten and fix the upper shell 11 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 is convenient for the upper shell 1 1 set is installed, and slowly forms a tensioned and fixed assembly, the blocking edge 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 shell 11, and then the top cover 13 is installed at the first step groove 111 at the upper end opening of the upper shell 11, and the top cover 13 also presses the upper end of the air duct bracket 4 and is fixed with the upper end of the air duct bracket 4, so that the top cover 13 blocks the upper end opening of the upper shell 11 and tightens the air duct bracket 4, and its assembly structure is simple and stable.

[0045] 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 fixedly mounted on 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 shell 11; in this embodiment, the scheme 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.

[0046] S006: The lower shell 12 is mounted on the periphery of the control component 500 from bottom to top, and the first clip 122 of the lower shell 12 is clipped and fixed with the first inverted buckle 218 at the lower end of the motor bracket 21 to achieve the purpose of pre-fixation, and the lug 123 in the lower shell 12 is docked with the limiting groove of the battery rack 51, and 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 of the lug 123 and is screwed fixed with the screw hole to fix the lower shell 12 with the control component 500 and the motor bracket 21, wherein the upper end of the lower shell 12 is connected to the lower end of the metal mesh ring 6, and its assembly structure is simple and stable.

[0047] S007: Snap the bottom cover 14 into the lower port of the lower shell 12, and the bottom cover 14 is also locked with the lower end of the battery rack 51 by the fourth screw, and the USB charging interface 501 is also arranged at the lower end of the circuit board 5 and is exposed in the first window hole 143 at the bottom of the bottom cover 14, which is convenient for charging with an external charging cable.

[0048] S008: The diaphragm 7 is attached and fixed to the bottom surface of the bottom cover 14 and covers the fourth screw, which achieves a decorative effect and can also protect the fourth screw to prevent the fourth screw from being oxidized and rusted when it encounters moisture, thereby increasing the service life.

[0049] The assembling method of the portable high-speed fan is simple, scientific and reasonable, and can improve the assembly efficiency and ensure the stability of the assembly structure of the portable high-speed fan of the present invention.

[0050] Of course, the above description is only a specific embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. All equivalent changes or modifications made according to the structure, characteristics and principles described in the patent application scope of the present invention should be included in the patent application scope of the present invention.

Claims

1. A portable high-speed fan, characterized in that: It includes: A straight cylindrical housing (1) comprising 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 in sequence from top to bottom, wherein an air outlet (103) is arranged on the outer side of the upper end of the upper shell (11), and the lower shell (12) is arranged as a hand-held portion for a person to hold; An air duct support (4) is embedded and fixed on the upper part of the upper shell (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 end opening of the upper shell (11), and the air duct support (4) has an air duct (40) connected to the air outlet (103); An air supply assembly (2) comprises 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 mounted to the lower end of the upper shell (11); the upper end of the lower shell (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 on 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) connected to the air inlet (210); the high-speed motor (22) has an air guide channel (200) connected to the air inlet (210) and the air duct (40); A control assembly (500) comprises 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 an air duct support (4); the lower shell (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 shell (12); the circuit board (5) is provided with a stepless speed regulating roller (52) for controlling the wind speed of the air supply assembly (2); the stepless speed regulating roller (52) passes through a hole (121) provided in the lower shell (12) to be exposed outside the surface of the lower shell (12), and the stepless speed regulating roller (52) is located below the air outlet (103).

2. A portable high-speed fan according to claim 1, characterized in that: The motor support (21) is cylindrical, and has a plurality of thin ribs (211) and a bottom plate (212) integrally connected to the bottom ends of the thin ribs (211) at the lower end of the motor support (21), the air inlet (210) is formed between two adjacent thin ribs (211), and a wire groove (213) for accommodating a 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) extending upward through the upper end surface of the motor support (21), and the bottom plate (212) is also provided with a wire hole (214) for the wire (220) to pass through, and a wire routing opening (215) corresponding to the wire hole (214) is provided on the side of the thin rib (211).

3. A portable high-speed fan according to claim 4, characterized in that: A strip-shaped positioning groove (216) is arranged on the outside of one of the thin ribs (211); the metal mesh ring (6) is formed by bending a metal mesh into a ring shape, and the two ends are bent 90 degrees and then folded in half; a bending portion (61) protruding from the outside to the inside is formed on the inside of the metal mesh ring (6); the bending portion (61) is pressed from the outside to the inside into the strip-shaped positioning groove (216), so that the metal mesh ring (6) is fixedly wrapped around the outer periphery of the lower end of the motor bracket (21).

4. A portable high-speed fan according to any one of claims 2 to 5, characterized in that: The air duct (40) comprises 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), wherein the horizontal section (403) is connected to the air outlet (103), and the air outlet (103) is arranged on the outer side of the upper end of the housing (1); the air supply assembly (2) is arranged at the lower end of the straight section (401).

5. A portable high-speed fan according to any one of claims 2 to 5, characterized in that: A first sound-absorbing cotton (43) is also filled between the top cover (13) and the upper end of the air duct bracket (4), and a second sound-absorbing cotton (44) is also filled between the outer side surface of the air duct bracket (4) and the upper shell (11); a soft rubber shock-absorbing pad (23) is provided on the outside of the high-speed motor (22), and the soft rubber shock-absorbing pad (23) is in contact with the air duct bracket (4) and the motor bracket (21).

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

7. A portable high-speed fan according to claim 9, characterized in that: The lower end of the battery rack (51) is further provided with two left clamp arms (512) and right clamp arms (513) distributed on the left and right, the left clamp arms (512) and the right clamp arms (513) both protrude outside the mounting groove (511), and the left clamp arms (512) and the right clamp arms (513) clamp and fix to the portion of the battery (3) protruding outside the mounting groove (511), so as to confine the battery (3) in the mounting groove (511).

8. A portable high-speed fan according to claim 1, characterized in that: The circuit board (5) is also snap-fitted with a roller bracket (53), the roller bracket (53) being provided with a roller plastic cover (54), the roller plastic cover (54) being also embedded in the hole (121), the roller plastic cover (54) having a window (541), the stepless speed regulating roller (52) being rotatably mounted in the roller bracket (53), and the stepless speed regulating roller (52) partially passes through the window (541) and is outside the roller plastic cover (54), wherein both sides of the roller bracket (53) are integrally formed with elastic buckles (531), the circuit board (5) is provided with buckle positions (56) adapted to the elastic buckles (531), and the elastic buckles (531) are snap-fitted to the buckle positions (56).

9. A portable high-speed fan according to claim 1, characterized in that: The lower end of the lower shell (12) is provided with a notch (120); the bottom cover (14) is provided with a protrusion (141) at a 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 shell (12); and a rope hole (142) for installing a hanging rope or a hanging buckle is also provided on the outer side of the protrusion (141); the bottom of the bottom cover (14) is also provided with a first window hole (143) and a second window hole (144) located beside 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 penetrated and exposed in the first window hole (143), and a light guide (145) is embedded and installed in the second window hole (144); the light guide (145) and the indicator light (502) are installed in a matching manner.

10. A method for assembling a portable high-speed fan as claimed in claim 1, characterized in that: It includes the following steps: S001: The circuit board (5) is fixed to the battery rack (51) by means of a first screw, and the stepless speed regulating roller (52) is mounted on the circuit board (5), and the battery (3) is also mounted on the battery rack (51) to form a control assembly (500); S002: inserting and fixing the lower end of the air duct support (4) and the upper end of the motor support (21) of the air supply assembly (2) so that the air duct (40) of the air duct support (4) is connected to the air guide channel (200) of the high-speed motor (22) in the air supply assembly (2); S003: inserting the motor bracket (21) of the air supply component (2) onto the battery rack (51), and locking it with a second screw, so that the air supply component (2) is fixed to the upper end of the control component (500); S004: The upper shell (11) is sleeved on 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 shell (11) is pressed against the retaining edge (217) in the middle of the motor bracket (21), and the tensioning ribs (218) on the outer surface of the motor bracket (21) are in contact with the inner wall of the upper shell (11) to tighten and fix the upper shell (11) to fix the upper shell (11) on the motor bracket (21), wherein the retaining edge (217) is located at the air inlet ( 210), the air duct (40) of the air duct support (4) corresponds to the air outlet (103) on the outer side of the upper end of the upper shell (11), and then the top cover (13) is installed at the first step groove (111) at the upper end opening of the upper shell (11), and the top cover (13) also presses against the upper end of the air duct support (4) and is fixed with the upper end of the air duct support (4) by buckling, so that the top cover (13) blocks the upper end opening of the upper shell (11) and fastens the air duct support (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 sleeved and fixed on 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 shell (11); S006: The lower shell (12) is sleeved on the periphery of the control component (500) from bottom to top, and the first clamping strip (122) of the lower shell (12) is clamped and fixed with the first undercut (218) at the lower end of the motor bracket (21), and the lug (123) in the lower shell (12) is docked with the limiting groove of the battery rack (51), and 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 of the lug (123) and is screwed and fixed with the screw hole, so that the lower shell (12) is fixed with the control component (500) and the motor bracket (21), wherein the upper end of the lower shell (12) is connected with the lower end of the metal mesh ring (6); S007: The bottom cover (14) is buckled into the lower port of the lower housing (12), and the bottom cover (14) is also locked with the lower end of the battery holder (51) by means of a fourth screw, and a USB charging interface (501) is also provided at the lower end of the circuit board (5) and is exposed in the first window hole (143) at the bottom of the bottom cover (14); S008: The diaphragm (7) is fixed to the bottom surface of the bottom cover (14) and covers the fourth screw.

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