Handheld high-speed fan

Abstract

The handheld high-speed fan comprises a fan head and a handle connected to the lower portion of the fan head, the handle comprises a base shell and clamping shells, the base shell comprises a left shell and a right shell which are connected in a covering mode, a containing cavity is defined by the left shell and the right shell, and the clamping shells are clamped to the left side and the right side of the base shell. According to the utility model, the structural design is reasonable, the assembly of the components is simple and fast, the assembly and processing cost is saved, the whole machine structure is stable and durable after assembly, the disassembly and maintenance are convenient, and the left and right sides of the clamping shell can be pressed in a combined state, so that the assembly and processing are convenient. And after the buckling claws retreat and buckle, disassembly and maintenance can be conveniently carried out.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, in particular to a handheld high-speed fan. Background Art

[0002] When going out or doing outdoor activities in the summer, the weather is relatively hot and there may be no air conditioning. In order to keep cool at any time, portable fans came into being. They are popular because they are easy to carry and can be used at any time.

[0003] Portable fans are difficult to assemble due to their size and complex structure, especially high-speed portable handheld fans, which have more complex structural combinations. If the structural design is unreasonable, a relatively large assembly production cost will be incurred, and after assembly, the structure is prone to instability or difficulty in disassembly and maintenance. Utility Model Content

[0004] The purpose of the utility model is to provide a handheld high-speed fan which, through structural optimization, is not only easy to assemble, but also has a stable and durable structure after assembly, and is also convenient for disassembly and maintenance, thereby solving the problems raised by the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a handheld high-speed fan, comprising a fan head and a handle connected to the bottom of the fan head, the handle comprising a base shell and a clamping shell, the base shell comprising a left shell and a right shell that are covered and connected to each other, the left shell and the right shell enclose a cavity, and the clamping shell is clamped on the left and right sides of the base shell to tighten the connection between the left shell and the right shell.

[0006] Preferably, a snap-fit ​​structure is provided between the clamping shell and the base shell, and the snap-fit ​​structure includes a snap arm provided on the inner wall surface of the clamping shell, a snap claw provided at the end of the snap arm, a wire hole provided through the wall surface of the base shell, and a snap position provided on the inner wall surface of the base shell. When the clamping shell is clamped on the base shell, the snap arm passes through the wire hole and is embedded in the wire hole, and the snap claw is snap-connected with the snap position.

[0007] Preferably, the width of the buckle arm is adapted to the width of the wire hole so that the buckle arm will not deviate or shake when placed in the wire hole.

[0008] Preferably, a fastening bolt seat is provided on one side of the base shell facing the fan head, and a limiting clamp is provided on the other side facing each other. A fastening bolt column is provided at the position of the fan head corresponding to the fastening bolt seat, and a reinforcement bolt column is provided at the position of the fan head corresponding to the limiting clamp. The fastening bolt column is fastened to the fastening bolt seat by a screw, and an adjusting screw is installed at the lower end of the reinforcement bolt column, and the adjusting screw is snap-connected to the limiting clamp.

[0009] Preferably, a circuit board assembly and a battery are arranged in the cavity, the battery is electrically connected to the circuit board assembly, and the circuit board assembly is electrically connected with a control button, a power switch and a USB interface. The control button, power switch and USB interface are all arranged in a preset through hole of the handle shell and extend outward from the through hole.

[0010] Preferably, the fan head includes an outer shell, which is a tubular body, one end of the tubular body is set as an air inlet, and the other end is set as an air outlet, a motor base is formed inside the outer shell, the motor base is coaxially arranged with the outer shell, and the circumferential wall surface of the motor base extends toward the inner wall of the outer shell to form a wind-cutting blade, and a drive fan blade group is installed on the motor base, and the drive fan blade group drives the air located at the air inlet to flow through the wind-cutting blades and then blow out from the air outlet, and a guide member is provided on the side of the motor base away from the drive fan blade group, and a wind collecting cover is provided on the side of the guide member away from the motor base.

[0011] Preferably, the driving fan blade group is evenly arranged with driving blades in the circumferential direction, the surface of the driving fan blade facing the wind-cutting blade is the driving surface, and the surface of the wind-cutting blade facing the driving surface is the wind-receiving surface. During the rotation of the driving fan blade group, the driving surface rotates toward the wind-receiving surface, and the curved surface where the wind-receiving surface and the curved surface where the wind-driving surface are located in the same radial area are intersected, and the angle θ1 between the wind-receiving surface and the wind-driving surface is less than 90°.

[0012] Preferably, the angle θ2 between the wind-receiving surface and the central axis of the motor base satisfies: 30°<θ2<60°.

[0013] Preferably, the guide member is provided with guide blades, and the guide blades are arranged parallel to the central axis of the air outlet.

[0014] Preferably, the inner diameter of the air collecting hood on the side facing the air guide member gradually decreases from the air inlet to the air outlet.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] The utility model has a reasonable structural design, and the assembly between the components is simple and quick, which is beneficial to saving assembly and processing costs. After assembly, the structure of the whole machine is stable and durable, and it is also convenient for disassembly and maintenance. In the assembled state, the left and right sides of the clamping shell can be pressed to make the claws retreat and buckle, and then the parts can be disassembled and maintained conveniently. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is an exploded view of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the utility model;

[0019] Figure 3 This is a three-dimensional diagram of the appearance of the utility model;

[0020] Figure 4 This is a schematic diagram of the right shell structure of the utility model;

[0021] Figure 5 This is a schematic diagram of the shell structure of the utility model Figure 1 ;

[0022] Figure 6 This is a schematic diagram of the shell structure of the utility model Figure 2 ;

[0023] Figure 7 This is a schematic diagram of the structure of the wind collecting hood of the utility model.

[0024] In the figure: 1 fan head; 11 wind collecting cover; 12 air guide; 121 guide blade; 13 housing; 131 motor base; 132 wind cutting blade; 133 fastening bolt column; 134 reinforcement bolt column; 14 drive fan blade assembly; 141 drive blade; 142 drive surface; 2 handle; 21 left housing; 211 limit clamp; 22 right housing; 221 fastening bolt seat; 222 adjusting screw; 23 clamping housing; 24 circuit board assembly; 241 control button; 242 power switch; 243 USB interface; 25 battery; 26 buckle arm; 27 buckle claw; 28 wire hole; 29 buckle position. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] See also Figure 1-7 A handheld high-speed fan includes a fan head 1 and a handle 2 connected to the bottom of the fan head 1. The handle 2 includes a base shell and a clamping shell 23. The base shell includes a left shell 21 and a right shell 22 that are covered and connected to each other. The left shell 21 and the right shell 22 enclose a cavity. The clamping shell 23 is clamped on the left and right sides of the base shell to tighten the connection between the left shell 21 and the right shell 22.

[0027] A snap-fit ​​structure is provided between the clamping shell 23 and the base shell, and the snap-fit ​​structure includes a snap arm 26 provided on the inner wall surface of the clamping shell 23, a snap claw 27 provided at the end of the snap arm 26, a wire hole 28 provided through the wall surface of the base shell, and a snap position 29 provided on the inner wall surface of the base shell. When the clamping shell 23 is clamped on the base shell, the snap arm 26 passes through the wire hole 28 and is embedded in the wire hole, and the snap claw 27 is snap-fitted to the snap position 29. The width of the snap arm 26 is adapted to the width of the wire hole 28, so that the snap arm 26 will not be displaced or shaken when placed in the wire hole 28.

[0028] The base shell is provided with a fastening bolt seat 221 on one side facing the fan head 1, and a limiting clamp 211 is provided on the other side facing the fan head 1. A fastening bolt column 133 is provided at the position of the fastening bolt seat 221 of the fan head 1, and a reinforcing bolt column 134 is provided at the position of the fan head 1 corresponding to the limiting clamp 211. The fastening bolt column 133 is fastened to the fastening bolt seat 221 by a screw, and an adjusting screw 222 is installed at the lower end of the reinforcing bolt column 134. The adjusting screw 222 is snap-connected with the limiting clamp 211. When assembling, first screw through the fastening bolt seat 221 with a screw. 21 is then locked on the fastening bolt column 133, thereby fixing the right shell 22 to the fan head 1, and then threading the adjusting screw 222 so that the inner edge of its nail cap is just flush with the lower edge of the limiting clamp 211. When the left shell 21 is covered on the right shell 22, the nail cap of the adjusting screw 222 is just engaged with the limiting clamp 211, thereby realizing the integral connection between the base shell and the fan head 1, and then using the clamping shell 23 to clamp on the left and right sides of the base shell to realize the installation of the handle shell. The installation process is simple and convenient, which not only helps to improve production efficiency, but also makes the handle structure stable and durable after installation.

[0029] A circuit board assembly 24 and a battery 25 are arranged in the cavity. The battery 25 and the fan blade group 14 are electrically connected to the circuit board assembly 24. The circuit board assembly 24 is electrically connected with a control button 241, a power switch 242 and a USB interface 243. The control button 241, the power switch 242 and the USB interface 243 are all arranged in a preset through hole in the handle 2 shell and extend outward from the through hole. The control button 241 is used to adjust the working gear and mode of the fan blade group 14. The power switch 242 is used to control the connectivity status of the fan circuit. When the USB interface 243 is connected to an external power supply using a charging cable, it can charge the battery 25 to supplement electrical energy.

[0030] The fan head 1 includes a shell 13, which is a tubular body. One end of the tubular body is set as an air inlet, and the other end is set as an air outlet. A motor base 131 is formed inside the shell 13, and the motor base 131 is coaxially arranged with the shell 13. The circumferential wall surface of the motor base 131 extends toward the inner wall of the shell 13 to form a wind-cutting blade 132. A drive fan blade group 14 is installed on the motor base 131. The drive fan blade group 14 drives the air located at the air inlet to flow through the wind-cutting blade 132 and then blow out from the air outlet. A guide member 12 is provided on the side of the motor base 131 away from the drive fan blade group 14, and a wind collecting cover 11 is provided on the side of the guide member 12 away from the motor base 131.

[0031] The fan blade group 14 is evenly arranged with wind driving blades 141 in the circumferential direction, and the surface of the wind driving blade 141 facing the wind cutting blade 132 is a wind driving surface 142, and the surface of the wind cutting blade 132 facing the wind driving surface 142 is a wind receiving surface. During the rotation of the fan blade group 14, the wind driving surface 142 rotates toward the wind receiving surface, and the curved surface where the wind receiving surface and the curved surface where the wind driving surface 142 are located in the same radial area are intersected, and the angle θ1 between the wind receiving surface and the wind driving surface 142 is less than 90°, and the angle θ2 between the wind receiving surface and the central axis of the motor base 131 satisfies: 30°<θ2<60°, and the guide blade 121 is provided on the guide member 12, and the guide blade 121 is arranged parallel to the central axis of the air outlet, and the wind collecting cover 11 is facing The inner diameter of the cover cavity on one side of the air guide member 12 gradually decreases from the air inlet to the air outlet. During operation, the driving motor on the air-driving fan blade group 14 drives the air-driving blade 141 to rotate under the action of electricity. During the rotation of the air-driving blade 141, the air at the air inlet is pressurized and blown toward the wind-cutting blade 132 in the form of a spiral wind flow. The wind-receiving surface of the wind-cutting blade 132 forms an acute angle with the wind-driving surface 142 of the wind-driving blade 141, so that the wind flow can be compressed and pressurized, and then blown toward the air guide member 12 with a higher wind pressure. The air guide member 12 uses its guide blades 121 arranged parallel to the air outlet to cut the high-pressure wind flow and form a wind flow as parallel to the air outlet as possible, which is blown toward the wind collecting cover 11. The wind flow is pressurized again under the action of the wind collecting cover 11 with a contracting structure, and is finally blown out with a faster and higher-pressure wind flow.

[0032] In summary: the utility model has a reasonable structural design, and the assembly between components is simple and quick, which is conducive to saving assembly and processing costs. After assembly, the structure of the whole machine is stable and durable, and it is also easy to disassemble and maintain. In the assembled state, the left and right sides of the clamping shell 23 can be pressed to make the claws 27 retreat to the buckle position 29, and then the parts can be disassembled and maintained conveniently.

[0033] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0034] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A handheld high-speed fan, comprising a fan head (1) and a handle (2) connected below the fan head (1), characterized in that: The handle (2) comprises a base shell and a clamping shell (23), wherein the base shell comprises a left shell (21) and a right shell (22) which are connected to each other and cover each other, wherein the left shell (21) and the right shell (22) enclose a cavity, and the clamping shell (23) is clamped on the left and right sides of the base shell to secure the connection between the left shell (21) and the right shell (22).

2. A handheld high-speed fan according to claim 1, characterized in that: A snap-fit ​​structure is provided between the clamping shell (23) and the base shell, and the snap-fit ​​structure comprises a snap-fit ​​arm (26) provided on the inner wall surface of the clamping shell (23), a snap-fit ​​claw (27) provided at the end of the snap-fit ​​arm (26), a wire hole (28) provided through the wall surface of the base shell, and a snap-fit ​​position (29) provided on the inner wall surface of the base shell. When the clamping shell (23) is clamped on the base shell, the snap-fit ​​arm (26) passes through the wire hole (28) and is embedded in the wire hole, and the snap-fit ​​claw (27) is snap-fitted to the snap-fit ​​position (29).

3. A handheld high-speed fan according to claim 2, characterized in that: The width of the buckle arm (26) is adapted to the width of the wire hole (28), so that the buckle arm (26) will not deviate or shake when placed in the wire hole (28).

4. The handheld high-speed fan according to claim 1, characterized in that: A fastening bolt seat (221) is provided on one side of the base shell facing the fan head (1), and a limiting clamp (211) is provided on the other side facing the base shell. A fastening bolt column (133) is provided at a position of the fan head (1) corresponding to the fastening bolt seat (221), and a reinforcing bolt column (134) is provided at a position of the fan head (1) corresponding to the limiting clamp (211). The fastening bolt column (133) is fastened to the fastening bolt seat (221) by means of a screw, and an adjusting screw (222) is installed at the lower end of the reinforcing bolt column (134), and the adjusting screw (222) is snap-connected to the limiting clamp (211).

5. The handheld high-speed fan according to claim 1, characterized in that: A circuit board assembly (24) and a battery (25) are arranged in the cavity. The battery (25) is electrically connected to the circuit board assembly (24). A control button (241), a power switch (242), and a USB interface (243) are electrically connected to the circuit board assembly (24). The control button (241), the power switch (242), and the USB interface (243) are all arranged in a through hole preset in the housing of the handle (2) and extend outward from the through hole.

6. The handheld high-speed fan according to claim 1, characterized in that: The fan head (1) includes a shell (13), the shell (13) is a tubular body, one end of the tubular body is set as an air inlet, and the other end is set as an air outlet, a motor base (131) is formed inside the shell (13), the motor base (131) is coaxially arranged with the shell (13), the circumferential wall surface of the motor base (131) extends toward the inner wall of the shell (13) to form a wind-cutting blade (132), a driving fan blade group (14) is installed on the motor base (131), the driving fan blade group (14) drives the air at the air inlet to flow through the wind-cutting blade (132) and then blow out from the air outlet, a guide member (12) is provided on the side of the motor base (131) away from the driving fan blade group (14), and a wind collecting cover (11) is provided on the side of the guide member (12) away from the motor base (131).

7. A handheld high-speed fan according to claim 6, characterized in that: The fan blade group (14) is evenly arranged with wind driving blades (141) in the circumferential direction. The surface of the wind driving blade (141) facing the wind cutting blade (132) is a wind driving surface (142). The surface of the wind cutting blade (132) facing the wind driving surface (142) is a wind receiving surface. During the rotation of the fan blade group (14), the wind driving surface (142) rotates toward the wind receiving surface. The curved surface where the wind receiving surface and the curved surface where the wind driving surface (142) are located in the same radial area intersect, and the angle θ1 between the wind receiving surface and the wind driving surface (142) is less than 90°.

8. The handheld high-speed fan according to claim 7, characterized in that: The angle θ2 between the wind receiving surface and the central axis of the motor base (131) satisfies the following: 30°<θ2<60°.

9. The handheld high-speed fan according to claim 6, characterized in that: The guide member (12) is provided with a guide blade (121), and the guide blade (121) is arranged parallel to the central axis of the air outlet.

10. The handheld high-speed fan according to claim 6, characterized in that: The inner diameter of the air collecting hood (11) on the side facing the air guide member (12) gradually decreases from the air inlet to the air outlet.

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