Fan Blade And Manufacturing Method Thereof

Abstract

A fan blade has a body made of plywood/fiberboard and having two opposite ends, at least one assembling hole disposed at one of the two opposite ends of the body, and a tip disposed at the other one of the two opposite ends of the body and being flat or curved. A manufacturing method for the fan blade has four steps. Step 1: manufacturing plywood panels/fiberboards by carpentry machining. Step 2: adhering paper/veneers/melamine paper to the plywood panels/fiberboards. Cutting the plywood panels/fiberboards into shape to form the body. Step 3: cleaning debris on the body. Step 4: coating a pattern being consistent with patterns of the upper and bottom surfaces of the body on the circumferential edge of the body by heat pressing. With the pattern printed on the circumferential edge of the body, the fan blade is consistent in appearance.

Claims

1. A fan blade comprising: a body made of plywood or fiberboard and having two opposite ends; at least one assembling hole disposed at one of the two opposite ends of the body; and a tip disposed at the other one of the two opposite ends of the body and being flat or curved.

2. The fan blade as claimed in claim 1, wherein the at least one assembling hole includes at least three assembling holes; and the at least three assembling holes are equi-angularly disposed.

3. A manufacturing method for the fan blade as claimed in claim 1 comprising: a first step: manufacturing plywood panels or fiberboards by carpentry machining, wherein a length of each one of the plywood panels or the fiberboards is greater than a largest length of the body by less than 5 millimeters; a second step: adhering paper/veneers/melamine papers to two outer surfaces of the plywood panels/fiberboards, cutting the plywood panels/fiberboards into shape to form the body by a woodworking machine, the body having an upper surface, a bottom surface, a circumferential edge and two opposite ends, grinding the circumferential edge of the body, and forming the at least one assembling hole through one of the two opposite ends of the body; a third step: cleaning debris on the upper surface, the bottom surface, and the circumferential edge of the body; and a fourth step: coating a pattern being consistent with patterns of the upper and bottom surfaces of the body on the circumferential edge of the body by heat pressing.

4. The manufacturing method for the fan blade as claimed in claim 3, wherein in the first step, the body is composed by two said plywood panels/fiberboards overlaid with each other; and each one of the two overlaid plywood panels/fiberboards has a thickness being 2.7 millimeters.

5. The manufacturing method for the fan blade as claimed in claim 3, wherein in the fourth step, before coating a pattern on the circumferential edge of the body, a transfer paper passes through a heat press machine to be printed on the circumferential edge of the body.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0007] FIG. 1 is a side view of a first embodiment of a fan blade in accordance with the present invention; and

[0008] FIG. 2 is a side view of a second embodiment of a fan blade in accordance with the present invention.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

[0009] With reference to FIGS. 1 and 2, a fan blade has a body 1, at least three assembling holes 2, and a tip 3.

[0010] With reference to FIGS. 1 and 2, the body 1 is made of plywood/fiberboard and has two opposite ends. The at least three assembling holes 2 are equi-angularly disposed at one of the two opposite ends of the body 1. The tip 3 is disposed at the other one of the two opposite ends of the body 1. The tip 3 may be flat as shown in FIG. 2 or curved as shown in FIG. 1.

[0011] A manufacturing method for producing the fan blade in accordance with the present invention has four steps.

[0012] In a first step: manufacturing plywood panels/fiberboards by carpentry machining. A length of the plywood panels/fiberboards is greater than a largest length of the body 1 by less than 5 millimeters. The body 1 is composed of two overlaid plywood panels/fiberboards. Each one of the two overlaid plywood panels/fiberboards has a thickness being 2.7 millimeters. In a second step: respectively adhering paper/veneers/melamine papers to two surfaces of the plywood panels/fiberboard; cutting the plywood panels/fiberboard into shape to form the body by a woodworking machine, wherein the body 1 has an upper surface, a bottom surface, a circumferential edge, and two opposite ends; grinding the circumferential edge of the body 1; and forming at least one of the at least three assembling holes 2 through one of the two opposite ends of the body 1. In a third step: cleaning debris on the upper surface, the bottom surface, and the circumferential edge of the body 1.

[0013] In a fourth step: coating a pattern being consistent with the upper surface of the body 1 and the bottom surface of the body 1 on the circumferential edge of the body 1 by heat pressing. Before coating a pattern on the circumferential edge of the body, a transfer paper passes through a heat press machine to be printed on the circumferential edge of the body 1 to achieve a neat, integral, and a good appearance and to maintain the quality of the pattern subsequently printed.

[0014] Even though numerous characteristics and advantages of the present invention have been set forth in the foregoing description, together with details of the structure and features of the invention, the disclosure is illustrative only. Changes may be made in the details, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.