CN213684676U

CN213684676U - Fan blade assembly

Info

Publication number: CN213684676U
Application number: CN202022306664.4U
Authority: CN
Inventors: 褚奇渊; 罗肇锋
Original assignee: Shenzhen Ruoteng Technology Co ltd
Current assignee: Shenzhen Ruoteng Technology Co ltd
Priority date: 2020-10-15
Filing date: 2020-10-15
Publication date: 2021-07-13
Anticipated expiration: 2030-10-15

Abstract

A fan blade assembly relates to the technical field of small household appliances. It comprises a plastic impeller and a metal insert; a bulge mounting part is arranged on the middle part of the metal insert, and a shaft hole is arranged on the middle part of the bulge mounting part; the plastic impeller is provided with a containing groove, the middle part of the plastic impeller is provided with a mounting hole communicated with the containing groove, and the raised mounting part is arranged in the mounting hole in a penetrating way; the plastic impeller and the metal insert are integrally formed in an injection molding mode. The metal insert is provided with an installation cavity, the protruding installation part is located in the middle of the installation cavity, and one side of the plastic impeller, provided with the installation hole, is fixedly arranged in the installation cavity. The fixing groove is formed in one side, away from the protruding installation portion, of the outer side wall of the metal insert, and the fixing portion which is fixedly arranged with the fixing groove is arranged on one side, close to the installation hole, of the plastic impeller. By adopting the technical scheme, the motor has the advantages of low manufacturing cost, reduced energy consumption of the motor, reduced noise generation and stable fixation of the plastic impeller and the metal insert.

Description

Fan blade assembly

Technical Field

The utility model relates to a small-size household electrical appliances technical field, concretely relates to fan blade subassembly method.

Background

The fan blade assemblies on the market are usually made of pure aluminum alloy, and the material cost of the fan blade assemblies is high, and the manufacturing difficulty is high. The cost of purchasing the fan by the consumer is high, and the demand of the consumer cannot be met. Therefore, improvements are desired.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to prior art's defect and not enough, provide a fan blade assembly, have low in manufacturing cost, reduce the motor power consumption, reduce the production of noise, the fixed firm advantage of plastics impeller and metal mold insert.

In order to achieve the above object, the utility model adopts the following technical scheme: a fan blade assembly comprising: a plastic impeller and a metal insert; a bulge mounting part is arranged on the middle part of the metal insert, and a shaft hole is formed in the middle part of the bulge mounting part; the plastic impeller is provided with an accommodating groove, the middle part of the plastic impeller is provided with a mounting hole communicated with the accommodating groove, the mounting hole is matched with the raised mounting part, and the raised mounting part is arranged in the mounting hole in a penetrating manner; the plastic impeller and the metal insert are integrally formed in an injection molding mode.

The metal insert is provided with an installation cavity, the protruding installation part is located in the middle of the installation cavity, and one side of the plastic impeller, which is provided with the installation hole, is fixedly arranged in the installation cavity.

The plastic impeller is close to the fixing portion, which is arranged on one side of the mounting hole and is fixed with the fixing portion.

The plastic impeller includes: the accommodating groove and the mounting hole are both arranged on the body; and the blades are uniformly arranged on the outer side wall of the body in a surrounding manner, and an air guide groove is arranged between every two adjacent blades.

The blade is provided with 11, the blade is spiral angular form, protruding installation department is trapezoidal cylindricality, metal insert is the disc.

The angle between the edge of one side of the blade and the side, far away from the mounting hole, of the body is 24.14 degrees; the angle between the edge of the other side of the blade and the side of the body far away from the mounting hole is 33.84 degrees.

The metal insert is made of aluminum alloy or copper, and the plastic impeller is made of ABS plastic.

After the technical scheme is adopted, the utility model discloses beneficial effect does: through injection molding of the metal insert and the plastic impeller, the manufacturing cost can be effectively reduced, and the weight of the fan blade assembly is reduced, so that the energy consumption of the motor is reduced, and the noise is reduced. The outer side wall of one side, provided with the mounting hole, of the plastic impeller and the inner side wall of the mounting cavity are integrally formed through injection molding, so that the plastic impeller and the metal insert are fixed, and the plastic impeller and the metal insert are prevented from loosening when the fan blade assembly rotates at a high speed. The fixing part of the plastic impeller and the fixing groove on the metal insert are integrally formed through injection molding, so that the plastic impeller and the metal insert are further prevented from loosening when the fan blade assembly rotates at a high speed.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a first schematic structural diagram of the present invention;

FIG. 2 is a second schematic structural view of the present invention;

fig. 3 is a cross-sectional view a-a of the present invention;

fig. 4 is an explosion diagram of the present invention.

Description of reference numerals: 1. a plastic impeller; 2. a metal insert; 21. a boss mounting portion; a. a shaft hole; b. a containing groove; c. mounting holes; e. fixing grooves; 11. a fixed part; 12. a body; 13. a blade; f. a wind guide groove.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment as required without making a contribution, but all the embodiments are protected by the patent law within the scope of the claims of the present invention.

The present embodiment relates to a fan blade assembly, as shown in fig. 1 to 4, including: a plastic impeller 1 and a metal insert 2.

Specifically, a boss mounting portion 21 is provided on a middle portion of the metal insert 2, and a shaft hole a is provided on a middle portion of the boss mounting portion 21. The plastic impeller 1 is provided with a containing groove b, the middle of the plastic impeller 1 is provided with a mounting hole c communicated with the containing groove b, the mounting hole c is matched with the bulge mounting part 21, and the bulge mounting part 21 penetrates through the mounting hole c. The plastic impeller 1 and the metal insert 2 are integrally formed in an injection molding mode. Through the injection molding of the metal insert 2 and the plastic impeller 1, the manufacturing cost can be effectively reduced, and the weight of the fan blade assembly is reduced, so that the energy consumption of the motor is reduced, and the noise is reduced.

Preferably, the metal insert 2 is provided with a mounting cavity, the bump mounting portion 21 is located in the middle of the mounting cavity, and one side of the plastic impeller 1, which is provided with the mounting hole c, is fixedly arranged in the mounting cavity. The outer side wall of one side, provided with the mounting hole c, of the plastic impeller 1 and the inner side wall of the mounting cavity are integrally formed through injection molding, so that the plastic impeller 1 and the metal insert 2 are fixed, and the plastic impeller 1 and the metal insert 2 are prevented from loosening when the fan blade assembly rotates at a high speed.

Preferably, a fixing groove e is formed on the outer side wall of the metal insert 2 and located at a side away from the boss mounting portion 21, and a fixing portion 11 fixed to the fixing groove e is formed on the plastic impeller 1 and located at a side close to the mounting hole c. The fixing portion 11 of the plastic impeller 1 and the fixing groove e on the metal insert 2 are integrally formed through injection molding, so that the plastic impeller 1 and the metal insert 2 are further prevented from loosening when the fan blade assembly rotates at a high speed. In this embodiment, the fixing groove e has a ring shape.

Preferably, the plastic impeller 1 comprises: a body 12 and a plurality of blades 13, wherein the accommodating groove b and the mounting hole c are both arranged on the body 12. The plurality of blades 13 are uniformly arranged on the outer side wall of the body 12 in a surrounding manner, and an air guide groove f is formed between every two adjacent blades 13. In the present embodiment, 11 blades 13 are provided, the blades 13 have a spiral angle shape, the boss mounting portion 21 has a stepped cylindrical shape, and the insert 2 has a disk shape. The arrangement of 11 blades 13 can effectively meet the air supply saturation when the fan blade assembly rotates.

Preferably, the angle between the edge of the side of the vane 13 and the side of the body 12 remote from the mounting hole c is 24.14 degrees. The angle between the edge of the other side of the vane 13 and the side of the body 12 remote from the mounting hole c is 33.84 degrees. In this embodiment, the outer diameter of the impeller is 27.05 mm. The edge of blade 13 sets up drawing of patterns angle, and the edge of impeller storage tank b bottom is provided with drawing of patterns angle.

Preferably, the metal insert 2 is made of aluminum alloy or copper, and the plastic impeller 1 is made of ABS plastic.

Specifically, the manufacturing method of the fan blade assembly comprises the following steps:

and S1, processing the metal insert 2. Be provided with the installation cavity on metal insert 2, protruding installation department 21 is located the middle part of installation cavity, and on the 2 lateral walls of metal insert and be located and keep away from protruding installation department 21 one side and be provided with fixed slot e.

And S2, mounting the metal insert 2 in the mold, and inserting the mounting hole c of the metal insert 2 into the positioning column in the mold. The concentricity of the mold and the metal insert 2 is ensured, so that the concentricity of the impeller to be injection-molded is ensured. The fan blade assembly is prevented from doing centrifugal motion when rotating at high speed, so that abrasion between a motor shaft and the shaft hole a is increased, and noise is generated.

S3, injecting the molten injection molding material into the mold to form the plastic impeller 1 on the metal insert 2.

And S4, opening the mold after the injection molding material is cooled, and taking out the injection molded fan blade assembly. In this embodiment, before the mold opening of step S4, the following steps are required:

and S41, water removing opening. And when the molded fan blade assembly is taken out, demolding is carried out along the inclined direction of the blades 13 of the fan blade assembly so as to manufacture the fan blade assembly.

After the fan blade assembly is taken out in step S4, the following steps are required:

s42: and carrying out surface treatment on the fan blade assembly, so that no redundant plastic is left on the surface of the fan blade assembly.

And S5, detecting and packaging the fan blade assembly. Whether the fan blade assembly is qualified or not is detected by a method of sampling and cutting the impeller, and the qualified fan blade assembly can be packaged.

The working principle of the utility model is as follows: when the fan blade assembly is installed, the fan blade assembly needs to be installed on an external motor shaft, and the accommodating groove b of the plastic impeller 1 is covered outside the motor, so that the installation of the fan blade assembly is completed. Through the injection molding of the metal insert 2 and the plastic impeller 1, the manufacturing cost can be effectively reduced, and the weight of the fan blade assembly is reduced, so that the energy consumption of the motor is reduced, and the noise is reduced. The above description is only for the purpose of illustration and not limitation, and other modifications or equivalent replacements made by those skilled in the art to the technical solution of the present invention should be covered by the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solution of the present invention.

Claims

1. A fan blade assembly, comprising: a plastic impeller (1) and a metal insert (2);

a bulge mounting part (21) is arranged in the middle of the metal insert (2), and a shaft hole (a) is formed in the middle of the bulge mounting part (21);

the plastic impeller (1) is provided with a containing groove (b), the middle part of the plastic impeller (1) is provided with a mounting hole (c) communicated with the containing groove (b), the mounting hole (c) is matched with the boss mounting part (21), and the boss mounting part (21) is arranged in the mounting hole (c) in a penetrating manner; the plastic impeller (1) and the metal insert (2) are integrally formed in an injection molding mode.

2. The fan blade assembly according to claim 1, wherein the metal insert (2) is provided with a mounting cavity, the boss mounting portion (21) is located in the middle of the mounting cavity, and one side of the plastic impeller (1) provided with the mounting hole (c) is fixedly arranged in the mounting cavity.

3. The fan blade assembly according to claim 2, wherein a fixing groove (e) is formed in the outer side wall of the metal insert (2) and located on the side far away from the boss mounting portion (21), and a fixing portion (11) fixedly arranged with the fixing groove (e) is arranged on the side, close to the mounting hole (c), of the plastic impeller (1).

4. A fan blade assembly according to claim 3, wherein the plastic impeller (1) comprises: the body (12), the containing groove (b) and the mounting hole (c) are both arranged on the body (12); and the blades (13) are uniformly arranged on the outer side wall of the body (12) in a surrounding manner, and an air guide groove (f) is formed between every two adjacent blades (13).

5. The fan blade assembly according to claim 4, wherein 11 blades (13) are arranged, the blades (13) are in a spiral angle shape, the bump mounting portions (21) are in a ladder-shaped cylindrical shape, and the metal insert (2) is in a disc shape.

6. The fan blade assembly according to claim 5, wherein an angle between an edge of one side of the blade (13) and a side of the body (12) far away from the mounting hole (c) is 24.14 degrees;

the angle between the edge of the other side of the blade (13) and the side of the body (12) far away from the mounting hole (c) is 33.84 degrees.

7. The fan blade assembly according to claim 6, wherein the metal insert (2) is made of aluminum alloy or copper, and the plastic impeller (1) is made of ABS plastic.