| 摘要 |
A paintbrush includes a fork and a roller. The fork, which is a Y-shaped member and is made of plastic, has main stem and two branches. Each of the branches has a base section extended outwardly from the main stem, a distal section connected to the base section and a connector connected to the distal section. A roller has opposite ends engaged with the connectors for rotation. A normal direction is defined parallel to the main stem. The base sections of the branches has a width and a thickness respectively, wherein the thicknesses of the base sections are substantially perpendicular to the normal direction, and the widths thereof are perpendicular to the thickness, and the widths are greater than the thicknesses. The distal sections of the branches tilted inwards, such that the roller will not disengaged with the connectors while a normal force is exerted on the roller.
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