CN216044611U

CN216044611U - Electric fan

Info

Publication number: CN216044611U
Application number: CN202121496439.XU
Authority: CN
Inventors: 梁锦洪
Original assignee: Sihui Hongji Electrical Appliance Co ltd
Current assignee: Sihui Hongji Electrical Appliance Co ltd
Priority date: 2020-08-28
Filing date: 2021-07-02
Publication date: 2022-03-15
Anticipated expiration: 2031-07-02

Abstract

The utility model discloses an electric fan which comprises a blade support and a plurality of fan blades, wherein the blade support comprises a blade support body and a plurality of blade support arms fixed on the blade support body, the number of the blade support arms is equal to that of the fan blades, and one blade support arm is connected with one fan blade through a rivet; and a crease structure for adjusting the wind cutting angle of the fan blades is arranged on the position, close to the blade support body, of the blade support arm. According to the utility model, the fan blades and the blade supports are independently designed, so that the stamping die can be changed from an integral large die into a small die with the size of a single fan blade, and the development cost of the die is reduced. The utility model also provides a crease structure at the position of the blade supporting arm close to the blade supporting body, so that the blade supporting arm and the blade supporting body are not in the same plane, namely a wind cutting angle is formed. Therefore, the utility model can change the plane included angle between the blade support arm and the blade support body by arranging the crease structures with different crease degrees, thereby adjusting the wind cutting angle of the fan blade.

Description

Electric fan

Technical Field

The utility model relates to the technical field of fans, in particular to an electric fan.

Background

In daily life, the use of an electric fan in summer is indispensable. The fan blades are main parts on the electric fan, and the fan blades are driven by the motor to rotate to generate flowing air flow, so that convenience is brought to users.

In the existing electric fan, the fan blades and the blade supports are designed to be integrally formed, the integral forming design keeps the integrity of the appearance, but the integral large die needs to be arranged in the design, the development cost of the die is improved, and the integrally formed design cannot change the wind cutting angle of the fan blades, so that the wind volume cannot be adjusted by changing the wind cutting angle.

Accordingly, the prior art is yet to be improved and developed.

Disclosure of Invention

In view of the above disadvantages of the prior art, an object of the present invention is to provide an electric fan, which aims to solve the problems of high mold cost and incapability of changing the wind cutting angle of the blades due to the integrally formed design of the blades and the blade support in the conventional electric fan.

An electric fan comprises a blade support and a plurality of fan blades, wherein the blade support comprises a blade support body and a plurality of blade support arms fixed on the blade support body, the number of the blade support arms is equal to that of the fan blades, and one blade support arm is connected with one fan blade through a rivet; and a crease structure for adjusting the wind cutting angle of the fan blades is arranged on the position, close to the blade support body, of the blade support arm.

In the electric fan, the fold structure is a concave fold, and the plane included angle between the fan blade and the blade support body is changed by adjusting the concave degree of the concave fold.

The electric fan is characterized in that the folding line structure comprises a first concave folding line and a second concave folding line which are opposite to each other, and the plane included angle between the fan blade and the blade support body is changed by adjusting the concave degree of the first concave folding line and the second concave folding line.

The electric fan further comprises a blade base riveted with the blade support body.

In the electric fan, a seat core is arranged in the blade seat, and an axial threaded hole for inserting an output shaft of the motor is formed in the seat core.

The electric fan is characterized in that the number of the fan blades is three, and each fan blade is fixed on the blade supporting arm by adopting three rivets.

Has the advantages that: the utility model provides an electric fan, through independently designing fan blades and blade supports, punching molding can be carried out according to needs, different requirements are facilitated, a punching die can be changed from a conventional integrated large die into a small die with the size of a single fan blade, and the development cost of the die is reduced. The utility model also arranges a fold structure on the leaf supporting arm near the leaf supporting body, so that the leaf supporting arm and the leaf supporting body are not on the same plane, namely, a wind cutting angle is formed. Therefore, the embodiment can change the plane included angle between the blade supporting arm and the blade supporting body by arranging the folding line structures with different folding line degrees, thereby adjusting the wind cutting angle of the fan blade.

Drawings

Fig. 1 is a perspective view of an electric fan according to an embodiment of the present invention.

Fig. 2 is a front view of an electric fan according to an embodiment of the present invention.

Fig. 3 is a schematic view of a blade support structure provided in an embodiment of the present invention.

Fig. 4 is a schematic view of an electric fan with another shape of fan blades according to the present invention.

Detailed Description

To facilitate an understanding of the utility model, the utility model will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

The existing fan blade is mostly integrally formed by plastic materials, the formed fan blade cannot adjust the wind cutting angle according to actual needs, and due to the fact that the fan blade is integrally formed, the development cost of a die is high, and the change of the shape of the fan blade is difficult. Because the blades are made of plastic materials, the blades are easy to deform in the using process, and the air output is low.

Based on this, the present invention provides a solution to the above technical problem, and the details thereof will be explained in the following embodiments.

Referring to fig. 1 to 3, as shown in the drawings, an electric fan according to an embodiment of the present invention includes a blade holder 10 and a plurality of fan blades 20, where the blade holder 10 includes a blade holder body 11 and a plurality of blade holder arms 12 fixed on the blade holder body 11, the number of the blade holder arms 12 is equal to that of the fan blades 20, and each blade holder arm 12 is connected to one fan blade 20 through a rivet; a folding line structure 30 for adjusting the wind cutting angle of the fan blades is arranged on the blade support arm 12 close to the blade support body.

In this embodiment, leaf support 10 and flabellum 20 are the non-integrated design, and both are through rivet fixed connection, and this embodiment is through designing flabellum and leaf support independent, can carry out die-cut molding as required, the demand of convenient difference, and stamping die also can be changed into the small model of single flabellum size by the big model of present integral type, reduces the development cost of mould.

In this embodiment, a fold structure 30 for adjusting the wind-cutting angle of the fan blade is further disposed on the blade support arm 12 near the blade support body. Specifically, the wind-cutting angle of the fan blade is determined by the plane included angle between the fan blade 20 and the blade holder body 11, and different wind-cutting angles can be obtained by changing the plane included angle between the fan blade 20 and the blade holder body 11. As shown in fig. 1-2, since the fan blade 20 is fixed to the blade support arm 12 by a rivet, it can be determined that the fan blade 20 and the blade support arm 12 are in the same horizontal plane, and therefore, the wind cutting angle of the fan blade can be changed by changing the plane included angle between the blade support arm 12 and the blade support body 11. In an initial state, the blade supporting arm 12 and the blade supporting body 11 are located on the same plane, and after a crease structure 30 is arranged at a position, close to the blade supporting body, on the blade supporting arm 12, the blade supporting arm and the blade supporting body are not located on the same plane, that is, a wind cutting angle is formed. Therefore, the embodiment can change the plane included angle between the blade supporting arm and the blade supporting body by arranging the folding line structures with different folding line degrees, thereby adjusting the wind cutting angle of the fan blade.

In some embodiments, the folding structure is a concave folding, and the plane included angle between the fan blade and the blade support body is changed by adjusting the concave degree of the concave folding, so as to adjust the wind cutting angle of the fan blade.

In some specific embodiments, as shown in fig. 1 to 4, the fold structure 30 includes a first concave fold 31 and a second concave fold 32 opposite to each other, and the included angle between the fan blade 20 and the main body 11 is changed by adjusting the degree of the first concave fold 31 and the second concave fold 32. In this embodiment, crease structure 30 preferably sets up leaf bracket arm 12 with the junction of leaf bracket body 11, both ends are recessed respectively about on the leaf bracket arm 12 and form two first indent creases 31 and the second indent creases 32 of opposition, just first indent creases 31 and second indent creases 32 are triangle-shaped. In this embodiment, the included angle between the fan blade 20 and the blade support body 11 is changed by adjusting the degree of the first concave fold 31 and the second concave fold 32, so as to adjust the wind cutting angle of the fan blade; further, the two opposite first concave folds 31 and second concave folds 32 can also strengthen the structure of the joint of the blade support arm 12 and the blade support body 11, so as to ensure that the blade support arm is not distorted and deformed when the fan blade rotates at high speed.

In some embodiments, the specific size of the fan blade 20 may be adjusted according to actual needs, which is not limited herein, and the fan blade 20 may be formed by stamping, and the specific process steps of stamping are not described herein for the conventional technology in the prior art. For example, aluminum which hardly deforms after long-term use and is light in weight is selected as a fan blade raw material, and the fan blade is formed by stamping, and the size of the fan blade is carefully designed. As shown in fig. 1 and 4, a reinforcing structure is disposed in the middle of the fan blade 20, specifically, a concave-convex structure 21 is disposed in the middle of the fan blade 20, and the concave-convex edge functions as a reinforcing rib, so that deformation of the fan blade 20 during high-speed rotation can be effectively avoided, and the shape of the reinforcing structure is similar to that of the fan blade 20.

In some embodiments, as shown in fig. 1-2, the electric fan further comprises a blade base 40 riveted to the blade holder body 11. In this embodiment, leaf holder body 11 and leaf holder arm 12 all adopt iron material to make, iron leaf holder arm 12 has certain rigidity, and can take place deformation under the exogenic action to can form the crease structure of different crease degrees. By way of example, the blade support body may be circular, and the blade support arm may be a flat bone structure, that is, the width of one end of the blade support arm away from the crease structure is greater than that of the other end. In this embodiment, the leaf support body is connected with the leaf base 40 through rivets, the leaf support arms are connected with the fan blades through rivets, the leaf support arms and the fan blades are all set to be three, and the leaf support arms are uniformly connected to the leaf support body. In this embodiment, the blade seat can be formed by cast aluminum, and has the advantages of hardness and portability.

In some embodiments, as shown in fig. 1, the vane seat 40 is provided with a seat core 41, which is used for connecting with the output shaft of the motor, and the inner wall of the seat core 41 is provided with a thread, which is easy to understand and is matched with the thread on the output shaft of the motor. Further, a fixing bolt is arranged on the side wall of the seat core 41, and the fixing of the blade seat and the output shaft of the motor is reinforced through the fixing bolt, so that the blade seat is prevented from loosening or falling off in the working process.

In summary, the electric fan provided by the utility model has the advantages that the fan blades and the blade supports are independently designed, punching molding can be performed according to needs, different requirements are facilitated, the punching die can be changed from the existing integrated large die into a small die with the size of a single fan blade, and the development cost of the die is reduced. The utility model also arranges a fold structure on the leaf supporting arm near the leaf supporting body, so that the leaf supporting arm and the leaf supporting body are not on the same plane, namely, a wind cutting angle is formed. Therefore, the embodiment can change the plane included angle between the blade supporting arm and the blade supporting body by arranging the folding line structures with different folding line degrees, thereby adjusting the wind cutting angle of the fan blade.

It is to be understood that the utility model is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the utility model as defined by the appended claims.

Claims

1. An electric fan is characterized by comprising a blade support and a plurality of fan blades, wherein the blade support comprises a blade support body and a plurality of blade support arms fixed on the blade support body, the number of the blade support arms is equal to that of the fan blades, and one blade support arm is connected with one fan blade through a rivet; and a crease structure for adjusting the wind cutting angle of the fan blades is arranged on the position, close to the blade support body, of the blade support arm.

2. The electric fan as claimed in claim 1, wherein the folding structure is a concave folding, and the angle between the fan blade and the blade holder body is changed by adjusting the degree of the concave folding.

3. The electric fan according to claim 1, wherein the folding structure comprises a first concave folding line and a second concave folding line which are opposite to each other, and the included angle between the fan blade and the blade holder body is changed by adjusting the degree of the first concave folding line and the second concave folding line.

4. The electric fan as claimed in claim 3, further comprising a blade base riveted to the blade holder body.

5. The electric fan as claimed in claim 4, wherein a seat core is provided in the blade seat, and an axial threaded hole is provided in the seat core for insertion of the output shaft of the motor.

6. The electric fan as claimed in claim 1, wherein said blades are provided in three pieces, each of said blades being fixed to said blade bracket by three rivets.