Integrally Formed Fan Guard

Abstract

Disclosed are an integrally formed fan guard and its manufacturing method. The fan guard includes a top side and a circumferential side around the outer periphery of the top side, and the top and circumferential sides are formed by a metal plate by a single or multiple stamping and extrusion method. An air hole is formed by stamping at the top side or both of the top and circumferential sides for flowing air, and a central through hole is formed at the center position of the top side. In the manufacturing method, the fan guard is formed by stamping or extruding a steel plate directly by stamping and extrusion equipments. The invention does not require a high welding skill, and the fan guard so manufactured has the advantages of high efficiency, consistency, and pass rate, and thus reducing the production cost significantly.

Description

BACKGROUND OF THE INVENTIONField of the Invention[0001]The present invention relates to the field of fan guards, and more particularly to an integrally formed fan guard and its convenient manufacturing method that can reduce the cost of the fan guard effectively.Description of the Related Art[0002]In general, a fan such as a floor fan, a table fan, a fan lamp, etc has a vane installed in a fan guard, and the fan guard not just protects the vane only, but also facilitates the flow of air. Therefore, most present existing fan guards are bowl-shaped structure formed by welding steel wires or bars. Such fan guard features light weight and facilitates airflow, and thus has been used for many years so far. However, this fan guard also has the following drawbacks. Firstly, the structure of the fan guard requires a molding process of the steel wires or bars in advance, and then the molded steel wires or bars are welded and connected. Since the welding process has a certain requirement on th...

AI Technical Summary

Benefits of technology

The present invention provides an integrally formed fan guard with simple structure and convenient manufacture, which reduces production cost significantly. The fan guard is manufactured by direct stamping or extruding a steel plate using equipment like stamping and extrusion, which requires no high welding skill and produces efficient, consistent, and pass-rate fan guards. The cost per fan guard is about 30-40% lower than that of conventionally manufactured fan guards.

Problems solved by technology

Since the welding process has a certain requirement on the technical skill of a welder, therefore the pass rate of the product is directly related to the technical skill of the welder, and the production cost of this fan guard is always high.

At present, most fan guards made of steel wires or bars have insufficient strength to carry the motor after the center through hole is formed.

The metal plate cannot be fixed to the fan guard by screws and usually are welded, and thus further increasing the production cost.

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