Pencil sharpener

The utility model discloses a pencil sharpener which comprises an automatic pencil feeding structure, a self-starting structure, a knife rest, a gear adjusting structure, a pencil point protecting structure and a detachable pencil sharpening frame. The detachable pencil sharpening frame comprises an upper portion, a middle portion and a lower portion, the automatic pencil feeding structure is arranged on the upper portion, the knife rest is arranged in the middle portion, the gear adjusting structure is arranged on the lower portion, and the self-starting structure and the pencil point protecting structure penetrate through the upper portion, the middle portion and the lower portion. The pencil sharpener is simple in structure, convenient to operate, relatively low in cost and long in service life. 本实用新型公开了一种削笔器，包括自动进笔结构、自启动结构、刀架、档位调节结构、笔尖保护结构和可拆卸削笔架；可拆卸削笔架包括上部、中部和下部，自动进笔结构设置在上部，刀架设置在中部，档位调节结构设置在下部，自启动结构、笔尖保护结构贯穿上部、中部和下部；本实用新型提供了结构简单，便于操作，成本相对较低且使用寿命较长的一种削笔器。