A new shaftless fan blade

Abstract

The utility model discloses a novel shaftless fan blade, including the mounting bush, the outside of mounting bush is evenly provided with a plurality of fan blade, the fan blade includes upper layer spiral fan blade and lower layer spiral fan blade, the inside of lower layer spiral fan blade is connected with mounting bush, the inside of upper layer spiral fan blade is connected with the inside of lower layer spiral fan blade, the outside of upper layer spiral fan blade is connected with the outside of upper layer spiral fan blade, the fan blade is set from lower to upper inclination, the inside of upper layer spiral fan blade with the inside of lower layer spiral fan blade forms a air channel, the top of mounting bush is installed with a connecting ring. The utility model discloses simple structure, when working, upper layer spiral fan blade and lower layer spiral fan blade rotate, airflow is from lower layer spiral fan blade to upper layer spiral fan blade, and airflow velocity is amplified, and air channel reduces the air resistance of fan blade, and the blowing distance is more far, and is stronger, and upper layer spiral fan blade and lower layer spiral fan blade break airflow, and the body feeling is more comfortable, and the use effect is good.

Description

Technical Field

[0001] This utility model relates to the field of fan blade technology, specifically to a novel shaftless fan blade. Background Technology

[0002] Fan blades are a crucial component of a fan, driven by a motor to rotate and generate airflow. Common fan blades typically have a curved cross-section. Shaftless fan blades are a type of fan blade primarily used with shaftless motors. However, existing shaftless fan blades are generally single-layered, resulting in continuous airflow, significant resistance, slow airflow speed, insufficient airflow distance and power, and less comfortable operation, leading to unsatisfactory performance. Therefore, to avoid the shortcomings of existing technology, it is necessary to improve it. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings and deficiencies in the existing technology and to provide a new type of shaftless fan blade with simple structure and good performance.

[0004] This utility model is achieved through the following technical solution:

[0005] A novel shaftless fan blade includes a mounting sleeve. A plurality of fan blades are evenly distributed on the outer side of the mounting sleeve. Each fan blade includes an upper spiral fan blade and a lower spiral fan blade. The inner side of the lower spiral fan blade is connected to the mounting sleeve, and the inner side of the upper spiral fan blade is connected to the inner side of the lower spiral fan blade. The outer side of the upper spiral fan blade is connected to the outer side of the lower spiral fan blade. The fan blades are inclined from bottom to top, and an air duct is formed between the inner side of the upper spiral fan blade and the inner side of the lower spiral fan blade.

[0006] Furthermore, a connecting ring is installed on the top of the mounting sleeve, and the connecting ring is provided with a connecting piece that connects to the upper spiral fan blade.

[0007] Furthermore, a connecting block is provided on the outer side of the connecting piece, and a connecting groove corresponding to the connecting block is provided on the inner side of the upper spiral fan blade.

[0008] Furthermore, the lower part of the connecting block is provided with a slot, and the inner side of the upper spiral fan blade is provided with a card block corresponding to the slot.

[0009] Furthermore, the top of the mounting sleeve is provided with several positioning mounting holes, and the bottom of the connecting ring is provided with positioning mounting posts corresponding to the positioning mounting holes.

[0010] Furthermore, the connecting ring is fitted onto the mounting sleeve, the outer side of the mounting sleeve is provided with a plurality of positioning grooves, and the connecting ring is provided with positioning blocks corresponding to the positioning grooves.

[0011] Furthermore, the inner side of the mounting sleeve is provided with several longitudinal protrusions.

[0012] Furthermore, the tail of the fan blade is arc-shaped.

[0013] Furthermore, the fan blade is provided with an opening.

[0014] Furthermore, four fan blades are evenly distributed on the outer side of the mounting sleeve.

[0015] Compared to existing technologies, this invention features a fan blade comprising an upper spiral fan blade and a lower spiral fan blade, with the fan blades angled upwards. An air duct is formed between the inner sides of the upper and lower spiral fan blades. During operation, the upper and lower spiral fan blades rotate, and airflow flows from the lower to the upper spiral fan blades, amplifying the airflow speed. The air duct reduces the wind resistance of the fan blades, resulting in a longer and stronger blowing distance. The upper and lower spiral fan blades break up the airflow, making the user experience more comfortable and improving the overall performance. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the novel shaftless fan blade of this utility model;

[0018] Figure 2 This is an exploded view of the structure of the novel shaftless fan blade of this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the new shaftless fan blade of this utility model with an opening;

[0020] Figure 4 This is a schematic diagram of the connecting ring of this utility model.

[0021] In the diagram: 1-Mounting sleeve; 2-Fan blade; 3-Upper spiral fan blade; 4-Lower spiral fan blade; 5-Air duct; 6-Connecting ring; 7-Connecting piece; 8-Connecting block; 9-Connecting groove; 10-Slot; 11-Slot; 12-Positioning mounting hole; 13-Positioning mounting post; 14-Positioning groove; 15-Positioning block; 16-Protrusion; 17-Opening. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figures 1 to 4 The present invention discloses a novel shaftless fan blade, comprising a mounting sleeve 1. A plurality of fan blades 2 are evenly distributed on the outer side of the mounting sleeve 1. Each fan blade 2 includes an upper spiral fan blade 3 and a lower spiral fan blade 4. The inner side of the lower spiral fan blade 4 is connected to the mounting sleeve 1, and the inner side of the upper spiral fan blade 3 is connected to the inner side of the lower spiral fan blade 4. The outer side of the upper spiral fan blade 3 is connected to the outer side of the upper spiral fan blade 4. The fan blades 2 are inclined from bottom to top, and an air duct 5 is formed between the inner sides of the upper spiral fan blade 3 and the lower spiral fan blade 4. During operation, the upper spiral fan blade 3 and the lower spiral fan blade 4 rotate, and the airflow moves from the lower spiral fan blade 4 to the upper spiral fan blade 3, amplifying the airflow speed. The air duct 5 reduces the wind resistance of the fan blades, resulting in a longer and stronger blowing distance. The upper spiral fan blade 3 and the lower spiral fan blade 4 break up the airflow, making the user experience more comfortable and improving the overall performance.

[0024] A connecting ring 6 is installed on the top of the mounting sleeve 1. The connecting ring 6 has a connecting piece 7 that connects to the upper spiral fan blade 3, which facilitates the installation of the fan blade.

[0025] A connecting block 8 is provided on the outer side of the connecting piece 7, and a connecting groove 9 corresponding to the connecting block 8 is provided on the inner side of the upper spiral fan blade 3, so that the connection between the connecting piece 7 and the upper spiral fan blade 3 is more stable. The connecting groove 9 is a dovetail groove, which effectively prevents the upper spiral fan blade 3 from loosening.

[0026] The lower part of the connecting block 8 is provided with a slot 10, and the inner side of the upper spiral fan blade 3 is provided with a locking block 11 corresponding to the slot 10, so that the connecting piece 7 and the upper spiral fan blade 3 can be quickly and securely locked together.

[0027] The top of the mounting sleeve 1 is provided with several positioning mounting holes 12, and the bottom of the connecting ring 6 is provided with positioning mounting posts 13 corresponding to the positioning mounting holes 12, which facilitates the quick positioning and installation of the connecting ring 6.

[0028] The connecting ring 6 is fitted onto the mounting sleeve 1. The outer side of the mounting sleeve 1 is provided with several positioning grooves 14. The connecting ring 6 is provided with positioning blocks 15 corresponding to the positioning grooves 14, which facilitates the quick positioning and installation of the connecting ring 6 and effectively prevents the connecting ring 6 from rotating relative to the mounting sleeve 1.

[0029] The mounting sleeve 1 and the connecting ring 6 can be integrally formed.

[0030] The inner side of the mounting sleeve 1 is provided with several longitudinal protrusions 16, which makes the connection between the mounting sleeve 1 and the shaftless motor more secure.

[0031] The tail of fan blade 2 is arc-shaped to reduce the noise of fan blade 2 during operation.

[0032] The fan blade 2 has an opening 17, which increases the degree to which the airflow is broken up by the fan blade 2, but also increases the operating noise.

[0033] The absence of perforation 17 in the fan blades 2 reduces noise.

[0034] Four fan blades 2 are evenly distributed on the outer side of the mounting sleeve 1. The four fan blades with an upper and lower structure evenly and stably break up the airflow, making the body feel more comfortable.

[0035] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A novel shaftless fan blade, characterized in that: The device includes a mounting sleeve, on the outer side of which are evenly distributed a plurality of fan blades. The fan blades include an upper spiral fan blade and a lower spiral fan blade. The inner side of the lower spiral fan blade is connected to the mounting sleeve, the inner side of the upper spiral fan blade is connected to the inner side of the lower spiral fan blade, and the outer side of the upper spiral fan blade is connected to the outer side of the upper spiral fan blade. The fan blades are inclined from bottom to top, and an air duct is formed between the inner side of the upper spiral fan blade and the inner side of the lower spiral fan blade.

2. The novel shaftless fan blade according to claim 1, characterized in that: A connecting ring is installed on the top of the mounting sleeve, and the connecting ring is provided with a connecting piece that connects to the upper spiral fan blade.

3. The novel shaftless fan blade according to claim 2, characterized in that: A connecting block is provided on the outer side of the connecting piece, and a connecting groove corresponding to the connecting block is provided on the inner side of the upper spiral fan blade.

4. The novel shaftless fan blade according to claim 3, characterized in that: The lower part of the connecting block is provided with a slot, and the inner side of the upper spiral fan blade is provided with a corresponding slot.

5. The novel shaftless fan blade according to claim 2, characterized in that: The top of the mounting sleeve is provided with several positioning mounting holes, and the bottom of the connecting ring is provided with positioning mounting posts corresponding to the positioning mounting holes.

6. The novel shaftless fan blade according to claim 2, characterized in that: The connecting ring is fitted onto the mounting sleeve, and the outer side of the mounting sleeve is provided with several positioning grooves. The connecting ring is provided with positioning blocks corresponding to the positioning grooves.

7. The novel shaftless fan blade according to claim 1, characterized in that: The inner side of the mounting sleeve is provided with several longitudinal protrusions.

8. The novel shaftless fan blade according to claim 1, characterized in that: The tail of the fan blade is arc-shaped.

9. The novel shaftless fan blade according to claim 1, characterized in that: The fan blade has an opening.

10. The novel shaftless fan blade according to claim 1, characterized in that: The outer side of the mounting sleeve is evenly distributed with four fan blades.

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