TWM617797U - Blade of fan - Google Patents

Abstract

This creation is a fan blade of a fan, which includes a shaft seat and a plurality of blades. The blades are connected to the shaft seat and are arranged at intervals along the circumferential direction of the shaft seat. Each blade is an arc-shaped sheet body and includes a first side, a second side, a rear side and a front side. The second side and the first side are sequentially arranged along the circumferential direction of the shaft seat. The rear side and the front side are formed between the first side and the second side. The front side is arc-shaped and recessed toward the rear side. An imaginary surface formed by a plurality of straight lines between the first side and the second side and the front side are wrapped to form a wind-containing space. In this way, this creation can first contain a certain amount of air in the air-containing space and then send it out. Therefore, this creation can achieve a higher air output with a smaller blade area, saving electricity and environmental protection, low cost, light weight and small size.

Description

Fan blade

This creation relates to a fan part, especially a fan blade structure that uses the arc to increase the air volume generated.

In the prior art fan, the air volume that a single blade can send out is relatively low. In order to increase the air volume that the fan can send out as a whole, the large air volume fan is usually designed to increase the area of the single blade or increase the speed of the motor.

However, if the area of the blade is increased, the volume and weight of the blade will increase, resulting in that the motor must be driven with a greater output, so that the volume and specifications of the motor must also increase; and if the speed of the motor is increased, it will Lead to high power consumption and not environmentally friendly. In other words, the methods of increasing the air volume that the entire fan can deliver in the prior art are interlinked as a whole, which affects the whole body, which will increase the volume and weight, and increase the manufacturing cost and the power consumption cost in subsequent use.

Therefore, the fan blades in the prior art must be improved.

In view of the aforementioned shortcomings and deficiencies of the prior art, this invention provides a fan blade that can increase the air volume that a single blade can deliver without increasing the volume of the blade and increasing the specifications of the motor.

In order to achieve the above creative purposes, the technical means used in this creation is to design a fan blade, which includes: A shaft seat A plurality of blades, which are connected to the shaft seat, and are arranged at intervals along the circumferential direction of the shaft seat; each of the blades is an arc-shaped sheet body and includes A first side A second side, which is sequentially arranged along the circumferential direction of the shaft seat with the first side; A back side, which is formed between the first side and the second side; A front side surface formed between the first side side and the second side side and opposite to the rear side surface; the front side surface is arc-shaped recessed in the direction of the rear side surface; the first side side and the second side An imaginary surface formed by a plurality of straight lines between the sides and the front side surface wraps to form a wind-containing space.

The advantage of this creation is that the blade is designed in an arc shape, the front side is recessed in the direction of the rear side, and an imaginary surface formed by a plurality of straight lines between the first side and the second side is connected to the front side. The covering forms a wind-containing space; that is, the concave arc of the front side is sufficient to form a plate-like/dish-shaped wind-containing space with the flat or curved surface covering the first side and the second side at the same time. In this way, compared with the flat blades that can only cut the wind and send out, this creation can first contain a certain amount of air and then send out by the volume of the wind-containing space, and then can push out a higher air volume. In this way, this creation can achieve a higher output air volume with a smaller blade area, and can use a lower specification motor, so it does not consume electricity, is more environmentally friendly, and has a lower cost, and it can also make the overall volume smaller. And the weight is relatively light.

Furthermore, in the fan blade of the fan, one end of each blade is connected to the shaft seat, and the other end extends in a direction away from the shaft seat, and is bent and extended along the circumferential direction of the shaft seat .

Furthermore, in the fan blade of the fan, the distance between the first side edge and the second side edge increases from the end of each blade connected to the shaft seat to the end of each blade. Decrease again.

Furthermore, in the fan blade of the fan, the blades and the shaft base are integrally formed.

Furthermore, in the fan blade of the fan, the material of the shaft base is plastic, and the material of the blades is plastic.

Furthermore, in the fan blade of the fan, the number of the blades is five, and the blades are arranged at equal intervals.

In the following, in conjunction with the drawings and the preferred embodiments of this creation, the technical means adopted by this creation to achieve the predetermined creation purpose are further explained.

Please refer to FIG. 1 and FIG. 2, the fan blade of the fan of this invention includes a shaft base 10 and a plurality of blades 20.

The blades 20 are connected to the shaft base 10 and are arranged at intervals along the circumferential direction D1 of the shaft base 10. In this embodiment, the blades 20 and the shaft base 10 are integrally formed; however, in other embodiments, the blades 20 may also be components independent of the shaft base 10 and may be connected to the shaft base through other means (such as bonding or locking). 10 Combine. In addition, the material of the shaft base 10 is plastic in this embodiment, but in other embodiments, it can also be any material.

Please further refer to FIGS. 3 and 4, each blade 20 is an arc-shaped piece and includes a first side 21, a second side 22, a rear side 23 and a front side 24. The second side 22 and the first side 21 are sequentially arranged along the circumferential direction D1 of the shaft base 10. Moreover, in this embodiment, the distance between the first side 21 and the second side 22 is from the end of each blade 20 connected to the shaft base 10 to the end of each blade 20, increasing first and then decreasing. That is to say, each blade 20 is widest at the middle and narrower at both ends; but in other embodiments, it is not limited to this, and it may be wider at the end or narrower at the end. The rear side 23 is formed between the first side 21 and the second side 22. The front side surface 24 is formed between the first side side 21 and the second side side 22 and is opposite to the rear side surface 23. The front side surface 24 is arc-shaped and recessed toward the rear side surface 23. An imaginary surface formed by a plurality of straight lines connecting the first side 21 and the second side 22 and the front side 24 are wrapped to form a wind-containing space 25.

In other words, since the front side 24 is connected between the first side 21 and the second side 22 and is recessed, the imaginary straight line connecting the first side 21 and the second side 22 will not be located on the front side. Therefore, a plane or a curved surface woven by an infinite number of imaginary straight lines between the first side 21 and the second side 22 will cover the front side 24 to form a wind-containing space 25. The wind containing space 25 has a certain volume and can contain air, so that when the blade 20 rotates with the shaft base 10, the contained air will be pushed forward, so as to increase the air volume sent by the single blade 20.

In addition, in this embodiment, one end of each blade 20 is connected to the shaft base 10, the other end extends in a direction away from the shaft base 10, and is bent and extended along the circumferential direction D1 of the shaft base 10. That is, because the blade 20 is bent and extended, the second side 22 is shorter and the first side 21 is longer. Furthermore, in this embodiment, the material of the blades 20 is plastic, and the number of the blades 20 is five, and they are arranged at equal intervals; but in other embodiments, the number and material are not limited to the above.

The advantage of this creation is that the blade 20 is designed in an arc shape, the front side 24 is recessed toward the rear side 23, and a imaginary connection formed by a plurality of straight lines between the first side 21 and the second side 22 The front side surface 24 covers the front side surface 24 to form a wind-containing space 25. In other words, the concave arc of the front side surface 24 is sufficient to cover the plane or the curved surface of the first side 21 and the second side 22 at the same time to form a disk-like/dish-shaped wind-containing space 25. In this way, compared to the flat blades 20 that can only cut the wind and send out, the present creation can first contain a certain amount of air and then send out by the volume of the wind-containing space 25, so as to push out a higher air volume. In this way, this creation can achieve a higher output air volume with a smaller blade 20 area, and can use a lower specification motor, so it does not consume electricity, is more environmentally friendly, and has a lower cost, and it can also make the overall volume smaller. Small and light weight.

The above description is only the preferred embodiment of the creation, and does not limit the creation in any form. Although the creation has been disclosed in the preferred embodiment as above, it is not intended to limit the creation. Any technical field has Generally knowledgeable persons, without departing from the scope of this creative technical solution, can use the technical content disclosed above to make slight changes or modifications into equivalent embodiments with equivalent changes. However, any content that does not deviate from this creative technical solution is based on this Any simple modifications, equivalent changes and modifications made to the above embodiments by the technical essence of the creation still fall within the scope of the technical solution for creation.

D1: Circumferential direction 10: Axle seat 20: Blade 21: First side 22: second side 23: rear side 24: front side 25: Rongfeng Space

Figure 1 is the three-dimensional appearance of this creation. Figure 2 is the front view of this creation. Figure 3 is a side view of this creation. Figure 4 is a cross-sectional view of the A-A cut line in Figure 2 of this creation.

10: Axle seat

20: Blade

21: First side

22: second side

23: rear side

24: front side

25: Rongfeng Space

Claims (6)

A fan blade, which contains A shaft seat A plurality of blades, which are connected to the shaft seat, and are arranged at intervals along the circumferential direction of the shaft seat; each of the blades is an arc-shaped sheet body and includes A first side A second side, which is sequentially arranged along the circumferential direction of the shaft seat with the first side; A back side, which is formed between the first side and the second side; A front side surface formed between the first side side and the second side side and opposite to the rear side surface; the front side surface is arc-shaped recessed in the direction of the rear side surface; the first side side and the second side An imaginary surface formed by a plurality of straight lines between the sides and the front side surface wraps to form a wind-containing space. The fan blade of the fan according to claim 1, wherein one end of each of the blades is connected to the shaft base, and the other end extends in a direction away from the shaft base, and is bent and extended along the circumferential direction of the shaft base . The fan blade of claim 1 or 2, wherein the distance between the first side and the second side is from the end of each blade connected to the shaft seat to the end of each blade, First increase and then decrease. The fan blade of the fan according to claim 1 or 2, wherein the blades and the shaft seat are integrally formed. For the fan blade of claim 1 or 2, wherein the material of the shaft seat is plastic, and the material of the blades is plastic. The fan blade of the fan according to claim 1 or 2, wherein the number of the blades is five, and the blades are arranged at equal intervals.

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