CN210509690U - Fan frame iron middle tube of radiating fan - Google Patents

Abstract

The utility model relates to a radiator fan's fan frame iron well pipe is the well pipe in less adoption iron to the well pipe that solves current like product, and it is comparatively inconvenient to produce manufacturing, the difficult technical problem who controls of manufacturing cost and design. One side of the fan frame of the heat radiation fan is provided with a hollow hole, and the center in the fan frame at the side is provided with an iron central pipe; the key points are that the iron-core pipe is an iron pipe which is formed by punching and stretching an iron coil stock, one end of the iron-core pipe is provided with a flanging formed by punching, one side edge of the flanging is provided with a flat key edge, the outer diameter between the end of the flanging hole and the symmetrical hole at the other end is provided with a reduced step ring diameter, a pipe body between the step ring diameter and the flanging is provided with through holes distributed at equal intervals, and the iron-core pipe is integrally injection-molded with the fan frame through the flanging and the through holes. Or, the flanging at the bottom of the iron middle pipe is provided with the opening, the cold glue binding force of the iron middle pipe and the fan frame which are integrally formed is improved through the opening at the flanging, the verticality is better, and the iron middle pipe is suitable for production and use of the middle pipe of the cooling fan.

Description

Fan frame iron middle tube of radiating fan

Technical Field

The utility model relates to a radiator fan is a radiator fan's fan frame iron well pipe.

Background

The heat dissipation fan generally refers to a fan used for heat dissipation of main board devices such as a CPU and a graphics card, and some of the heat dissipation fans are further provided with heat dissipation fins, which mainly aim to conduct heat and blow the heat to nearby air, so as to achieve a cooling effect. The structure of an axial flow cooling fan outer frame fixing bearing in the prior industry mainly comprises a plastic-rubber-in-tube structure and a copper-in-tube structure; the plastic middle pipe structure mode and the outer frame are integrally formed by injection molding, but the precision is low, the cost is low, the plastic middle pipe structure mode is easy to deform at high temperature, and the plastic middle pipe structure mode is suitable for fans with lower rotating speeds; the copper-in-pipe structure has high dimensional accuracy, but the cost is relatively high, and the waste of raw materials is large. For example, ZL patent No. 03242060.9 disclosed in chinese patent document, published 2004, 7/28.2004, and the utility model discloses an improved fixing structure for fan and motor with non-metal middle tube; like ZL patent No. 03242062.5 disclosed in Chinese patent literature, No. 2004, No. 7/28, and Utility model entitled "improved fixing structure for fan and motor with metal middle tube"; however, the iron-in-pipe is less adopted in the products and the like, the deformation rate of the iron-in-pipe is lower than that of the plastic-in-pipe, and the cost is lower than that of the copper-in-pipe.

Disclosure of Invention

In order to overcome the defects, the utility model aims to provide a fan frame iron middle tube of a cooling fan to the field, so that the middle tube of the existing like product is less adopted in the iron middle tube, the production and the manufacture are inconvenient, and the production cost is difficult to control. The purpose is realized by the following technical scheme.

A fan frame iron middle pipe of a heat radiation fan is provided, wherein a hollow hole is arranged at one side of a fan frame of the heat radiation fan, and the iron middle pipe is arranged at the center in the fan frame at the side; the structural design key points are that the iron-core pipe is an iron pipe which is formed by punching and stretching an iron coil, one end of the iron-core pipe is provided with a flanging formed by punching, one side edge of the flanging is provided with a flat key edge, the outer diameter between the end of the flanging hole and the symmetrical hole at the other end of the flanging hole is provided with a reduced step ring diameter, a pipe body between the step ring diameter and the flanging is provided with through holes distributed at equal intervals, and the iron-core pipe is integrally formed with a fan frame through the flanging and the through holes in an injection. Therefore, the iron middle pipe is arranged in the fan frame, so that the cost of the like product is lower than that of the copper middle pipe, the deformation rate is lower than that of the plastic middle pipe, and the high-temperature resistance effect is achieved.

And a flanging at the bottom of the iron middle pipe is provided with an opening. The cold glue binding force of the iron central pipe and the fan frame which are integrally formed is further improved through the opening at the flanging position, and the verticality is better.

The outer diameter of the iron middle pipe in the fan frame is provided with a rib position strip, the through hole of the iron middle pipe is positioned at the rib position strip in the fan frame, and the rib position strip, the fan frame and the iron middle pipe are integrally formed in an injection molding mode. The structure is convenient for the fan frame inner stator structure to be further fixed on the outer diameter of the iron middle pipe of the fan frame through the rib position strips.

The inner diameter of the iron-in-pipe in the fan frame is provided with a pipe inner sleeve, and the pipe inner sleeve is positioned at the through hole in the fan frame. The structure is convenient for the bearings at the two ends of the rotating shaft of the rotor structure to be fixed at the two ends of the pipe inner sleeve through the pipe inner sleeve in the iron middle pipe.

The utility model has reasonable structural design, simple assembly and production, simple production and manufacture of the iron-core pipe and low cost; the method is suitable for the production and use of the middle pipe of the cooling fan and the further improvement of the similar products.

Drawings

Fig. 1 is a schematic sectional view of a usage status according to an embodiment of the present invention.

Fig. 2 is a schematic view of the iron-in-pipe structure of fig. 1.

Fig. 3 is a schematic sectional view of the second embodiment of the present invention.

Fig. 4 is a schematic view of the iron-in-pipe structure of fig. 3.

Figure number and name: 1. the fan frame comprises a fan frame body 101, rib position strips, 2, an iron middle pipe body 201, a flanging 202, a step ring diameter 203, through holes 204, an opening 3 and a pipe inner sleeve.

Detailed Description

The structure and use of the present invention will now be further described with reference to the accompanying drawings. In the first embodiment shown in fig. 1 and 2, a hollow hole is formed in one side of a fan frame 1 of the cooling fan, an iron central pipe 2 is arranged in the center of the fan frame on the side, the iron central pipe is an iron pipe formed by punching and stretching an iron coil, a flanging 201 formed by punching is arranged at one end of the iron central pipe, a flat key edge is arranged at one side edge of the flanging, a reduced step ring diameter 202 is arranged between the opening end of the flanging and the opening of the other symmetrical end, through holes 203 are formed in a pipe body between the step ring diameter and the flanging and are distributed at equal intervals, and the iron central pipe is integrally injection-molded with the fan frame through the flanging and the through holes. Meanwhile, the outer diameter of the iron middle pipe in the fan frame is provided with a rib position strip 101, the through hole of the iron middle pipe is positioned at the rib position strip in the fan frame, and the rib position strip, the fan frame and the iron middle pipe are integrally formed in an injection molding mode. The inner diameter of the iron-in-pipe in the fan frame is provided with a pipe inner sleeve 3, and the pipe inner sleeve is positioned at the through hole 203 in the fan frame. During assembly, the circuit board with the stator is fixed on the outer diameter of the iron middle pipe and the rib position strips of the fan frame, the fan body with the rotating shaft is sleeved in the pipe inner sleeve in the middle pipe, and the rotating shafts at two ends of the rotating shaft are fixed at two ends of the pipe inner sleeve.

As shown in fig. 3 and 4, in the second embodiment, on the basis of the first embodiment, the flange at the bottom of the iron middle pipe is provided with an opening 204, the iron middle pipe is integrally injection-molded with the fan frame through the flange and the through hole, and simultaneously, the iron middle pipe is integrally injection-molded with the fan frame through the opening.

In conclusion, the flanging of the iron middle pipe is provided with two structures of a hole and a hole which are not formed, the iron middle pipe is punched and stretched by adopting an iron coil stock, raw materials are effectively saved, the size precision is high, the cost is low, but cold glue is generated when a plastic material and the iron middle pipe are formed to reduce the binding force, so that the precision requirement on the verticality is low; therefore, the gap generated by the cold glue phenomenon generated by the molding of the plastic material and the iron middle pipe is avoided, the binding force is not strong, and the verticality influence is large, so that the flanging at the bottom of the middle pipe is additionally provided with the hole, the binding force of the plastic circulating iron middle pipe is increased, and the verticality is better.

Claims (4)

1. A hollow hole is arranged at one side of a fan frame (1) of a heat radiation fan, and an iron middle pipe (2) is arranged at the center in the fan frame at the side; the novel fan frame is characterized in that the iron middle pipe (2) is an iron pipe formed by punching and stretching an iron coil, one end of the iron middle pipe is provided with a flanging (201) formed by punching, one side edge of the flanging is provided with a flat key edge, the outer diameter between the end of the flanging hole and the symmetrical hole at the other end is provided with a reduced step ring diameter (202), a pipe body between the step ring diameter and the flanging is provided with through holes (203) distributed at equal intervals, and the iron middle pipe is integrally injection-molded with the fan frame (1) through the flanging and the through holes.

2. The middle iron pipe of the fan frame of the heat dissipation fan as claimed in claim 1, wherein the flange (201) at the bottom of the middle iron pipe (2) is provided with an opening (204).

3. The fan frame iron center tube of the heat dissipation fan as claimed in claim 1, wherein the outer diameter of the iron center tube (2) in the fan frame (1) is provided with a rib position bar (101), the through hole of the iron center tube is located at the rib position bar in the fan frame, and the rib position bar, the fan frame and the iron center tube are integrally injection-molded.

4. The fan frame iron middle tube of the heat dissipation fan as claimed in claim 1, wherein the inner diameter of the iron middle tube (2) in the fan frame (1) is provided with an inner tube sleeve (3), and the inner tube sleeve is located at the through hole (203) in the fan frame.

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