Portable high-speed fan

Abstract

The utility model discloses a portable high-speed fan which comprises an outer shell, a fan assembly, an air inlet hole and an air outlet, the outer shell is in a straight cylinder shape, the air inlet hole is formed in the middle of the outer shell, and the lower portion of the outer shell is provided with a handheld portion for a hand to hold; the two sides of the upper end of the shell are provided with a first installation opening and a second installation opening which transversely penetrate through an inner cavity of the shell and are sunken from outside to inside, the first installation opening is provided with an air outlet frame, the second installation opening is provided with an air blocking cover, the rear end of the air outlet frame and the front end of the air blocking cover are nested and fixed, and an air outlet cavity is formed between the periphery of the rear end of the air outlet frame and the inner wall of the upper end of the shell. The fan assembly is vertically installed on the upper portion of the shell and arranged below the air outlet cavity, and a plurality of air outlets communicated with the air outlet cavity are formed in the front end of the air outlet frame. Compared with the prior art, the utility model has the advantages of simple structure, unique integral design, strong aesthetic feeling and interestingness, and the shell is designed to be in the shape of the straight cylinder, so that the utility model has small integral volume and relatively small occupied space, and is very convenient to carry.

Description

Technical Field

[0001] The utility model relates to the technical field of fan products, and particularly refers to a portable high-speed fan. Background Art

[0002] A fan refers to an electric fan, which is a tool for generating wind and cooling in hot weather. It is a device that uses electricity to drive the generation of air flow. The fan inside rotates after being powered on to form natural wind to achieve the effect of cooling. In order to facilitate people to pick up, a portable hand-held fan appears on the market, which can be held in the hand to achieve the cooling effect and is extremely convenient to use, making it an excellent choice in the sweltering summer.

[0003] The Chinese utility model patent with the application number 202321574046.5 discloses a hand-held fan, which includes a blowing part and a hand-held part. The blowing part includes an inner shell, an outer shell and a fan assembly. The inner shell forms an air passage, an air inlet communicated with one side of the air passage and an air outlet communicated with the other side of the air passage. The fan assembly is arranged in the air passage. The outer shell is used to cover the inner shell, and the outer shell has an installation opening. The hand-held part includes a hand-held shell, an installation mechanism and a fixing part. The hand-held shell covers the installation mechanism, the hand-held shell extends into the installation opening, and the fixing part sequentially penetrates the outer shell and the hand-held shell and then connects with the installation mechanism. Combining the attached Figure 3 It can be seen that the above hand-held fan is in a T shape as a whole, with a shape similar to that of a hair dryer. Its design is popular but lacks interest. Moreover, for the hand-held fan with this shape, since its blowing part is horizontally placed at the upper end of the hand-held part, and the blowing part has an inner shell, an outer shell and a fan assembly installed horizontally, the overall structure of the hand-held fan has a larger size at the upper end (i.e., the blowing part), which requires a large space and is not convenient to carry.

[0004] In view of this, the inventor of the present invention proposes the following technical solutions. Summary of the Utility Model

[0005] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a portable high-speed fan.

[0006] To solve the above technical problems, the present utility model adopts the following technical solutions: The portable high-speed fan includes a housing, a fan assembly, an air inlet hole, and an air outlet. The housing is in a straight cylindrical shape. The air inlet hole is provided in the middle of the housing, and the lower part of the housing is a hand-held part for a person to hold. On both sides of the upper end of the housing, there are a first mounting opening and a second mounting opening that horizontally penetrate the inner cavity and are recessed from the outside to the inside. The first mounting opening is provided with an air outlet frame, and the second mounting opening is provided with a wind shield. The rear end of the air outlet frame is nested and fixed with the front end of the wind shield, and an air outlet cavity is formed between the outer periphery of the rear end of the air outlet frame and the inner wall of the upper end of the housing. The fan assembly is vertically installed in the upper part of the housing and is placed below the air outlet cavity. The front end of the air outlet frame is provided with a plurality of air outlets communicating with the air outlet cavity.

[0007] Furthermore, in the above technical solution, the cross-section of the housing is circular; a first through hole and a second through hole that communicate with each other are respectively provided in the middle parts of the air outlet frame and the wind shield.

[0008] Furthermore, in the above technical solution, the air outlet frame includes a cylindrical main frame body and an air outlet part integrally formed on the outer periphery of the front end of the main frame body and protruding outward. The air outlet part has a plurality of air outlets penetrating the front and rear end faces. The main frame body passes through the inside of the housing and is assembled with the wind shield, and the air outlet part is placed at the first mounting opening.

[0009] Furthermore, in the above technical solution, the wind shield includes a cylindrical part and a wind shielding part integrally formed on the outer periphery of the rear end of the cylindrical part and protruding outward. The front end of the cylindrical part is nested and snap-fixed with the rear end of the main frame body, and the wind shielding part covers the second mounting opening.

[0010] Furthermore, in the above technical solution, a first stepped groove is provided on the inner wall of the first mounting opening, and the air outlet part is inlaid and installed in the first stepped groove; a second stepped groove is provided on the inner wall of the second mounting opening, and the wind shielding part is inlaid and installed in the second stepped groove.

[0011] Furthermore, in the above technical solution, the housing includes an upper housing, a metal mesh, and a lower housing that are sequentially connected from top to bottom. Among them, the metal mesh has the air inlet hole, the lower housing serves as the hand-held part, the fan assembly is vertically installed in the upper housing, and the first mounting opening and the second mounting opening are provided on both sides of the upper end of the upper housing.

[0012] Furthermore, in the above technical solution, the fan assembly includes a motor bracket installed in the housing and a high-speed motor installed in the motor bracket. An air inlet is provided on the outer periphery of the lower end of the motor bracket. The metal mesh is fixedly covered on the outer periphery of the lower end of the motor bracket and covers the air inlet, and the air inlet hole communicates with the air inlet.

[0013] Furthermore, in the above technical solution, the motor bracket is cylindrical. The lower end of the motor bracket has several thin rib strips and a bottom plate integrally connected to the lower ends of the thin rib strips. An air inlet is formed between two adjacent thin rib strips. A wire groove for accommodating the wires of the high-speed motor is provided on the outer side of one of the thin rib strips. The wire groove extends upward through the upper end surface of the motor bracket. The bottom plate is also provided with a wire hole for the wires to pass through. A wire routing opening corresponding to the wire hole is provided on the side of the thin rib strip.

[0014] Furthermore, in the above technical solution, a strip-shaped positioning groove is provided on the outer side of one of the thin rib strips; the metal mesh is bent into a ring shape and formed by folding the two ends by 90 degrees and then folding in half. A bending portion protruding from the outside to the inside is formed on the inner side of the metal mesh. The bending portion is pressed into the strip-shaped positioning groove from the outside to the inside, so that the metal mesh is fixedly wrapped around the outer periphery of the lower end of the motor bracket.

[0015] Furthermore, in the above technical solution, a soft rubber shock-absorbing pad is sleeved outside the high-speed motor, and the soft rubber shock-absorbing pad contacts the motor bracket; the high-speed motor includes a cylindrical shell, a high-speed motor main body fixed in the cylindrical shell through several rib strips, and a fan blade installed on the rotating shaft at the lower end of the high-speed motor main body. A wind guiding channel communicating with the air inlet is formed between the outer periphery of the high-speed motor main body and the inner wall of the cylindrical shell. The cylindrical shell is fixed in the motor bracket.

[0016] After adopting the above technical solution, the utility model has the following beneficial effects compared with the prior art: The utility model sets the outer shell into a straight cylinder shape, making the overall size of the utility model relatively small, especially the width is small, and the space it needs to occupy is relatively small, so it is extremely convenient to carry; specifically, the utility model vertically installs the fan assembly on the upper part of the outer shell, and an air outlet frame and a wind shield are arranged at the upper end of the outer shell, so that an air outlet cavity communicating with the air outlet is formed at the upper end of the outer shell, so that the outer shell can be set into a straight cylinder shape, and further the overall size of the utility model is relatively small. In addition, the utility model also has first mounting openings and second mounting openings recessed from the outside to the inside on both sides of the upper end of the outer shell, and the air outlet frame and the wind shield are respectively installed in the first mounting opening and the second mounting opening. Its overall design is unique, it has extremely strong aesthetic feeling and is very interesting; at the same time, the utility model sets the air inlet hole in the middle of the outer shell and above the hand-held part, which does not affect the air intake of the air inlet hole, that is, after the user holds the hand-held part, the air inlet hole will not be covered, ensuring that the air inlet hole can intake air normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a perspective view of the utility model;

[0018] Figure 2 is a perspective view of the utility model from another angle;

[0019] Figure 3is a cross-sectional view of the present utility model;

[0020] Figure 4 is an exploded perspective view of the fan in the present utility model;

[0021] Figure 5 is an assembly drawing of the fan assembly and the metal mesh in the present utility model;

[0022] Figure 6 is an assembly drawing of the fan assembly and the metal mesh from another perspective in the present utility model;

[0023] Figure 7 is an exploded assembly drawing of the fan assembly and the metal mesh in the present utility model;

[0024] Figure 8 is a perspective view of the wind shield in the present utility model;

[0025] Figure 9 is a perspective view of the air outlet frame in the present utility model;

[0026] Figure 10 is an assembly drawing of the upper shell in the present utility model. Detailed implementation manners

[0027] The present utility model will be further described below in conjunction with specific embodiments and the accompanying drawings.

[0028] See Figures 1-10 As shown, there is a portable high-speed fan, which includes a housing 1, a fan assembly 2, an air inlet hole 101, and an air outlet 103.

[0029] The housing 1 is in a straight cylindrical shape. The air inlet hole 101 is provided in the middle of the housing 1, and the lower part of the housing 1 is set as a hand-held part 102 for people to hold. On both sides of the upper end of the housing 1, there are a first mounting opening 104 and a second mounting opening 105 that penetrate the inner cavity horizontally and are recessed from the outside to the inside. The first mounting opening 104 is provided with an air outlet frame 4, and the second mounting opening 105 is provided with a wind shield 3. The rear end of the air outlet frame 4 is nested and fixed with the front end of the wind shield 3, and an air outlet cavity 10 is formed between the outer periphery of the rear end of the air outlet frame 4 and the inner wall of the upper end of the housing 1. The fan assembly 2 is vertically installed in the upper part of the housing 1 and is placed below the air outlet cavity 10. The front end of the air outlet frame 4 is provided with a plurality of air outlet holes 103 communicating with the air outlet cavity 10. During operation, the fan assembly 2 sucks the outside air from the air inlet hole 101 to form wind, and the wind is discharged from the air outlet holes 103 after passing through the air outlet cavity 10, thereby realizing the function of cooling and relieving heat. That is to say, the present utility model sets the housing 1 in a straight cylindrical shape, making the overall size of the present utility model relatively small, especially the width is small, and the space it needs to occupy is relatively small, so it is extremely convenient to carry. Specifically, the present utility model vertically installs the fan assembly 2 in the upper part of the housing 1, and sets an air outlet frame 4 and a wind shield 3 at the upper end of the housing 1, so that an air outlet cavity 10 communicating with the air outlet holes 103 is formed at the upper end of the housing 1, thereby enabling the housing 1 to be set in a straight cylindrical shape, and further making the overall size of the present utility model relatively small. In addition, the present utility model also has a first mounting opening 104 and a second mounting opening 105 that are recessed from the outside to the inside on both sides of the upper end of the housing 1, and an air outlet frame 4 and a wind shield 3 are respectively installed in the first mounting opening 104 and the second mounting opening 105. Its overall design is unique, it has a strong sense of beauty and is extremely interesting. At the same time, the present utility model sets the air inlet hole 101 in the middle of the housing 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 with the hand, the air inlet hole 101 will not be covered, ensuring that the air inlet hole 101 can intake air normally.

[0030] The cross-section of the housing 1 is circular. That is, the housing 1 is in a cylindrical shape, and a first through hole 40 and a second through hole 30 that communicate with each other are respectively provided in the middle parts of the air outlet frame 4 and the wind shield 3. The design of the first through hole 40 and the second through hole 30 not only has the effect of enhancing the interest, but also can be sleeved on the cross bar to form a positioning installation to achieve the hanging installation effect. At the same time, the design of the first through hole 40 does not affect the air outlet of the air outlet hole 103, that is, it does not affect the normal use of the present utility model.

[0031] The housing 1 includes an upper housing 11, a metal mesh 12, and a lower housing 13 that are connected in sequence from top to bottom. Among them, the metal mesh 12 has the air inlet holes 101, the lower housing 13 serves as the handheld part 102, the fan assembly 2 is vertically installed in the upper housing 11, and the first mounting opening 104 and the second mounting opening 105 are provided on both sides of the upper end of the upper housing 11. The metal mesh 12 has the function of defining the lower housing 13 as the handheld part, which has an obvious demarcation function, enabling users to clearly know the position of the handheld part 102, so as to quickly hold the handheld part 102 to hold the housing 1, which is relatively convenient to use; the metal mesh 12 has a plurality of the air inlet holes 101. That is to say, the metal mesh 12 not only plays the role of air inlet, but also has a good decorative effect, thereby enhancing the decorative effect of the present utility model. In addition, the present utility model designs the air inlet holes 101 through the metal mesh 12, so that the air inlet holes 101 are metal air inlet holes, and the air resistance thereof is relatively small, thereby being able to better achieve air inlet.

[0032] The following specifically describes the structure of the air outlet frame 4:

[0033] The air outlet frame 4 includes a cylindrical main frame body 41 and an air outlet part 42 integrally formed on the outer periphery of the front end of the main frame body 41 and protruding outward. The air outlet part 42 has a plurality of air outlet holes 103 penetrating the front and rear end faces. Among them, the air outlet holes 103 are annularly distributed. Among them, the main frame body 41 passes through the inside of the housing 1 and is assembled with the wind shield 3, and the air outlet part 42 is placed at the first mounting opening 104. Among them, the air outlet part 42 has a shape concave from outside to inside, which matches the shape of the first mounting opening 104. Among them, a first stepped groove 106 is provided on the inner wall of the first mounting opening 104, and the air outlet part 42 is embedded and installed in the first stepped groove 106, thereby ensuring the stability of the assembly structure. Among them, a first positioning groove 108 penetrating the first stepped groove 106 is also provided at the first mounting opening 104, and a first positioning convex part 421 formed at the rear side of the air outlet part 42 is embedded in the first positioning groove 108, thereby ensuring the stability of the assembly structure.

[0034] The following specifically describes the structure of the wind shield 3:

[0035] The wind shield 3 includes a cylindrical part 31 and a wind shielding part 32 integrally formed on the outer periphery of the rear end of the cylindrical part 31 and protruding outward. The front end of the cylindrical part 31 is nested and snap-fixed with the rear end of the main frame body 41, and the wind shielding part 32 covers the second mounting opening 105. The wind shield 3 plays the role of fixing the air outlet frame 4 and also plays the role of blocking the second mounting opening 105. Among them, the wind shielding part 32 has a shape concave from outside to inside, which matches the shape of the second mounting opening 105. A second stepped groove 107 is provided on the inner wall of the second mounting opening 105, and the wind shielding part 32 is embedded and installed in the second stepped groove 107, thereby ensuring the stability of the assembly structure.

[0036] Among them, a second positioning groove 109 penetrating through the second stepped groove 107 is further provided at the second installation port 105, and a second positioning convex portion 321 formed at the front end of the wind shield portion 32 is embedded in the second positioning groove 109, thereby ensuring the stability of the assembly structure.

[0037] A plurality of snap rings 311 are provided at the front end of the cylindrical portion 31, a limiting groove 411 for inserting the snap rings 311 is provided at the rear end of the main frame body 41, and a clamping protrusion 412 adapted to the snap rings 311 is further provided in the limiting groove 411. After the main frame body 41 is docked with the cylindrical portion 31, the snap rings 311 are inserted into the limiting groove 411 and are snap-fixed with the clamping protrusions 412, thereby ensuring that the main frame body 41 and the cylindrical portion 31 are snap-assembled together and are fixed to the upper end of the housing 1 in a front-back clamping manner.

[0038] The fan assembly 2 includes a motor bracket 21 installed in the housing 1 and a high-speed motor 22 installed in the motor bracket 21. An air inlet 210 is provided on the outer periphery of the lower end of the motor bracket 21. The metal mesh 12 is fixedly covered on the outer periphery of the lower end of the motor bracket 21 and covers the air inlet 210, and the air inlet holes 101 communicate with the air inlet 210, thereby ensuring that the air intake effect of the air inlet holes is at a better level.

[0039] The size of the air inlet holes 101 of the metal mesh 12 is relatively small, so that foreign objects can be effectively prevented from entering, achieving the purpose of protecting the present utility model; the metal mesh 12 is fixedly covered on the periphery of the motor bracket 21 in a detachable and replaceable manner. By replacing the metal mesh 12 with air inlet holes 101 of different sizes, different use requirements can be met, and different decorative effects can also be achieved, thereby enhancing the market competitiveness of the present utility model.

[0040] The aperture of the air inlet holes 101 is less than 2 mm. As a preferred embodiment, the aperture of the air inlet holes 101 is set to be less than 1 mm, which can realize air intake and effectively prevent foreign objects from entering.

[0041] An installation frame 5 is further installed in the lower housing 13, and a circuit board 51 and a battery 52 for power supply are provided on the installation frame 5. The circuit board 51 is electrically connected to the battery 52 and the high-speed motor.

[0042] The motor bracket 21 is cylindrical. The lower end of the motor bracket 21 has several thin rib strips 211 and a bottom plate 212 integrally connected to the lower ends of the thin rib strips 211. An air inlet 210 is formed between two adjacent thin rib strips 211, so that the air inlet 210 can be maximized, that is, the size of the air inlet 210 is set relatively large. And a wire groove 213 for accommodating the wire 220 of the high-speed motor 22 is arranged on the outer side of one of the thin rib strips 211. The wire groove 213 extends upward through the upper end face of the motor bracket 21. And the bottom plate 212 is also provided with a wire hole 214 for the wire 220 to pass through. A wire routing opening 215 corresponding to the wire hole 214 is arranged on the side of the thin rib strip 211. The designs of the wire groove 213, the wire routing opening 215 and the wire hole 214 are for the convenience of routing the wire 220 and preventing the phenomenon of messy wires 220.

[0043] A strip-shaped positioning groove 216 is arranged on the outer side of one of the thin rib strips 211; the metal mesh 12 is bent into a ring by the metal mesh and formed by folding the two ends by 90 degrees and then folding in half. An inwardly protruding bending part 121 is formed on the inner side of the metal mesh 12. The bending part 121 is pressed into the strip-shaped positioning groove 216 from the outside to the inside, so that the metal mesh 12 is fixedly wrapped around the outer periphery of the lower end of the motor bracket 21. It is a detachable assembly and the assembly structure is stable.

[0044] The high-speed motor 22 has a wind guiding channel 200 communicating the air outlet cavity and the air inlet hole 101. When the high-speed motor 22 works, it can suck the outside air through the air inlet hole 101 and enter the air outlet cavity through the wind guiding channel 200.

[0045] The high-speed motor 22 can be a ducted fan motor.

[0046] Specifically, the high-speed motor 22 includes a cylindrical shell 221, a high-speed motor main body 223 fixed in the cylindrical shell 221 through several rib strips 222, and a fan blade 224 installed on the rotating shaft at the lower end of the high-speed motor main body 223. A wind guiding channel 200 communicating the air inlet is formed between the outer periphery of the high-speed motor main body 223 and the inner wall of the cylindrical shell 221. The cylindrical shell 221 is fixed in the motor bracket 21. The structure of the high-speed motor 22 is simple and it has a self-contained wind guiding channel 200, and its assembly and use are extremely convenient. A soft rubber shock pad 23 is sleeved outside the cylindrical shell 221. The soft rubber shock pad 23 contacts the motor bracket 21. Through the design of the soft rubber shock pad 23, it can effectively reduce the vibration generated by the high-speed motor main body 223 during operation, thereby reducing noise and improving the user experience by reducing vibration.

[0047] In summary, the outer shell 1 of the present utility model is set in a straight cylinder shape, making the overall size of the present utility model relatively small, especially the width is small, and the space it needs to occupy is relatively small, so it is extremely convenient to carry; specifically, the fan assembly 2 of the present utility model is vertically installed on the upper part of the outer shell 1, and an air outlet frame 4 and a wind shield 3 are provided at the upper end of the outer shell 1, so that an air outlet cavity 10 communicating with the air outlet 103 is formed at the upper end of the outer shell 1, whereby the outer shell 1 can be set in a straight cylinder shape, and then the overall size of the present utility model is relatively small. In addition, the present utility model is also provided with a first installation opening 104 and a second installation opening 105 that are recessed from the outside to the inside on both sides of the upper end of the outer shell 1, and the air outlet frame 4 and the wind shield 3 are respectively installed in the first installation opening 104 and the second installation opening 105. Its overall design is unique, it has a strong sense of beauty and is very interesting; at the same time, the air inlet hole 101 of the present utility model is provided in the middle of the outer 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 intake air normally.

[0048] Certainly, the above are only specific embodiments of the present utility model, and are not intended to limit the scope of implementation of the present utility model. Any equivalent changes or modifications made according to the structure, characteristics and principles described in the scope of the patent application of the present utility model shall be included in the scope of the patent application of the present utility model.

Claims

1. A portable high-speed fan, which comprises a housing (1), a fan assembly (2), an air inlet hole (101), and an air outlet (103), and is characterized in that: The housing (1) is in a straight cylinder shape. The air inlet hole (101) is arranged in the middle of the housing (1), and the lower part of the housing (1) is provided with a hand-held part (102) for a person to hold. On both sides of the upper end of the housing (1), there are provided a first mounting opening (104) and a second mounting opening (105) that horizontally penetrate through its inner cavity and are recessed from the outside to the inside. The first mounting opening (104) is provided with an air outlet frame (4), the second mounting opening (105) is provided with a wind shield (3), the rear end of the air outlet frame (4) is nested and fixed with the front end of the wind shield (3), and an air outlet cavity (10) is formed between the outer periphery of the rear end of the air outlet frame (4) and the inner wall of the upper end of the housing (1). The fan assembly (2) is vertically installed in the upper part of the housing (1) and is placed below the air outlet cavity (10). The front end of the air outlet frame (4) is provided with a plurality of the air outlets (103) communicating with the air outlet cavity (10).

2. The portable high-speed fan according to claim 1, wherein: The cross-section of the housing (1) is circular; a first through hole (40) and a second through hole (30) that communicate with each other are respectively arranged in the middle of the air outlet frame (4) and the wind shield (3).

3. A portable high-speed fan according to claim 1, characterized in that: The air outlet frame (4) includes a cylindrical main frame body (41) and an air outlet part (42) that is integrally formed on the outer periphery of the front end of the main frame body (41) and protrudes outward. The air outlet part (42) has a plurality of air outlets (103) penetrating through the front and rear end faces. The main frame body (41) passes through the inside of the housing (1) and is assembled with the wind shield (3), and the air outlet part (42) is placed at the first mounting opening (104).

4. The portable high-speed fan according to claim 3, characterized in that: The wind shield (3) includes a cylindrical part (31) and a wind shielding part (32) that is integrally formed on the outer periphery of the rear end of the cylindrical part (31) and protrudes outward. The front end of the cylindrical part (31) is nested and snap-fixed with the rear end of the main frame body (41), and the wind shielding part (32) covers the second mounting opening (105).

5. A portable high-speed fan according to claim 4, characterized in that: The inner wall of the first mounting opening (104) is provided with a first stepped groove (106), and the air outlet part (42) is inlaid and installed in the first stepped groove (106); the inner wall of the second mounting opening (105) is provided with a second stepped groove (107), and the wind shielding part (32) is inlaid and installed in the second stepped groove (107).

6. A portable high-speed fan according to any one of claims 1-5, characterized in that: The housing (1) includes an upper housing (11), a metal mesh (12), and a lower housing (13) that are sequentially connected from top to bottom. Among them, the metal mesh (12) has the air inlet hole (101), the lower housing (13) serves as the hand-held part (102), the fan assembly (2) is vertically installed in the upper housing (11), and the first mounting opening (104) and the second mounting opening (105) are arranged on both sides of the upper end of the upper housing (11).

7. A portable high-speed fan according to claim 6, characterized in that: The fan assembly (2) includes a motor bracket (21) installed inside the housing (1) and a high-speed motor (22) installed inside the motor bracket (21). An air inlet (210) is provided on the outer periphery of the lower end of the motor bracket (21). The metal mesh (12) is fixedly wrapped around the outer periphery of the lower end of the motor bracket (21), covers the air inlet (210), and the air inlet hole (101) communicates with the air inlet (210).

8. A portable high-speed fan according to claim 7, wherein: The motor bracket (21) is cylindrical. The lower end of the motor bracket (21) has several thin rib strips (211) and a bottom plate (212) integrally connected to the lower ends of the thin rib strips (211). The air inlet (210) is formed between two adjacent thin rib strips (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 rib strips (211). The wire groove (213) extends upward through the upper end face of the motor bracket (21). The bottom plate (212) is also provided with a wire hole (214) for the wire (220) to pass through. A wire routing opening (215) corresponding to the wire hole (214) is provided on the side of the thin rib strip (211).

9. The portable high-speed fan according to claim 8, characterized in that: A strip-shaped positioning groove (216) is provided on the outer side of one of the thin rib strips (211). The metal mesh (12) is bent into a ring shape by the metal mesh and formed by folding after bending both ends by 90 degrees. A bending portion (121) protruding from the outside to the inside is formed on the inner side of the metal mesh (12). The bending portion (121) is pressed into the strip-shaped positioning groove (216) from the outside to the inside, so that the metal mesh (12) is fixedly wrapped around the outer periphery of the lower end of the motor bracket (21).

10. A portable high-speed fan according to claim 7, characterized in that: A soft rubber shock pad (23) is sleeved outside the high-speed motor (22), and the soft rubber shock pad (23) contacts the motor bracket (21). The high-speed motor (22) includes a cylindrical shell (221), a high-speed motor main body (223) fixed inside the cylindrical shell (221) by several rib strips (222), and a fan blade (224) installed on the rotating shaft at the lower end of the high-speed motor main body (223). An air guiding channel (200) communicating with the air inlet is formed between the outer periphery of the high-speed motor main body (223) and the inner wall of the cylindrical shell (221). The cylindrical shell (221) is fixed inside the motor bracket (21).

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