FAN FRAME STRUCTURE

Abstract

A fan frame structure includes a base portion and a wall portion. The base portion has at least one extension section vertically extended from an outer peripheral edge of the base portion, and the extension section has connecting sides. The wall portion is formed along the outer peripheral edge of the base portion through an insert molding process. The wall portion includes a plurality of wall segments connected to the connecting sides of the extension sections, and a clearance is formed between any two adjacent wall segments. With these arrangements, the base portion can better resist a wrapping force from the insert-molded wall portion to avoid deformation.

Claims

1. A fan frame structure, comprising: a base portion having at least one extension section vertically extended from an outer peripheral edge of the base portion; and the extension section having connecting sides provided thereon; and a wall portion being integrally formed along the outer peripheral edge of the base portion through insert molding and including a plurality of wall segments; and the wall segments being connected to the connecting sides of the extension section.

2. The fan frame structure as claimed in claim 1, wherein the extension section is divided into a plurality of equal parts that are spaced along the outer peripheral edge of the base portion.

3. The fan frame structure as claimed in claim 1, wherein the extension section is formed through stamping or bending.

4. The fan frame structure as claimed in claim 1, wherein the extension section is provided with at least one through hole, and a molding material of the wall portion also filling up the through hole, so that the wall portion is also associated with the extension section in the insert molding process.

5. The fan frame structure as claimed in claim 1, wherein the base portion is made of a metal material.

6. The fan frame structure as claimed in claim 1, wherein there are a plurality of the extension sections, and the extension sections being spaced along the outer peripheral edge of the base portion.

7. The fan frame structure as claimed in claim 1, wherein there is only one extension section, and the extension section continuously extending along the outer peripheral edge of the base portion.

8. The fan frame structure as claimed in claim 1, wherein the connecting sides of the extension section are located at a left edge and a right edge thereof, and wherein the wall segments have a clearance formed between any two adjacent ones of them.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The structure and the technical means adopted by the present invention to achieve the above and other objects can be best understood by referring to the following detailed description of the preferred embodiments and the accompanying drawings, wherein

[0011] FIG. 1 is an exploded perspective view of a fan frame structure according to a preferred embodiment of the present invention;

[0012] FIG. 2 is an assembled view of the fan frame structure of FIG. 1; and

[0013] FIG. 3 is an exploded perspective view of a fan frame structure according to another embodiment of the present invention

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] The present invention will now be described with some preferred embodiments thereof and by referring to the accompanying drawings. For the purpose of easy to understand, elements that are the same in the preferred embodiments are denoted by the same reference numerals.

[0015] Please refer to FIGS. 1 and 2, which are exploded and assembled perspective views, respectively, of a fan frame structure according to a preferred embodiment of the present invention. As shown, in the preferred embodiment, the fan frame structure includes a base portion 1 and a wall portion 2.

[0016] The base portion 1 is a thin plate made of a metal material, and includes at least one extension section 11 vertically extended from an outer peripheral edge of the base portion 1. In the illustrated preferred embodiment, there are two extension sections 11. Every extension section 11 has connecting sides located at a left edge 11a and a right edge 11b thereof. The extension sections 11 are formed through stamping or bending and are respectively formed with at least two through holes 111 or ribs.

[0017] The wall portion 2 is formed along the outer peripheral edge of the base portion 1 through insert molding or injection molding and includes a plurality of wall segments 2a. The wall segments 2a are respectively connected to the left edge 11a and the right edge 11b of the extension sections 11 while a clearance 21 is reserved between two adjacent wall segments 2a. When forming the wall portion 2 through insert molding, a molding material of the wall portion 2 also wraps and fills up the through holes 111 on the extension sections 11. When the insert molding wall portion 2 is cooled and cured with the molding material filled up the through holes 111, the wall portion 2 can be associated with the extension sections 11 and the base portion 1 more securely and stably.

[0018] A shaft barrel 3 is provided at a central area of the base portion 1 through insert molding. A plurality of openings 112 is formed on the base portion 1 around the shaft barrel 3. The wall portion 2 extends along the outer peripheral edge of the base portion 1, such that the wall portion 2 and the base portion 1 together define a space 12 and an air outlet 13 between them. Further, the wall portion 2 includes a tongue section 14 located in the vicinity of the air outlet 13.

[0019] As having been described above, the extension sections 11 are extended upward from the outer peripheral edge of the base portion 1 and can be formed by stamping or bending. In the preferred embodiment of FIG. 1, there are a plurality of extension sections 11 spaced from one another. In another operable embodiment, as shown in FIG. 3, there can be only one extension section 11, which continuously extends along the whole outer peripheral edge of the base portion 1. The continuous extension section 11 and the wall portion 2 are associated with each other in the insert molding process, so that the base portion 1 can have an enhanced structural strength to avoid deformation of the base portion 1.

[0020] The main object of the present invention is to provide a fan frame structure, of which the wall portion 2 is associated with the base portion 1 through insert molding, and a clearance 21 or a notch can be reserved between the wall segments 2a, i.e. the wall segments 2a are discontinuously formed, so that the clearance 21 provides a sufficient expansion allowance for the wall portion 2 and accordingly prevents the molded and expanded wall portion 2 from pressing against and deforming the base portion 1.

[0021] The present invention has been described with some preferred embodiments thereof and it is understood that many changes and modifications in the described embodiments can be carried out without departing from the scope and the spirit of the invention that is intended to be limited only by the appended claims.