| 摘要 |
The present invention relates to a rotary blackboard eraser with a built-in roll. This rotary blackboard eraser has a built-in cloth (20) surrounding an upper roll (31) and a lower roll (32). The cloth (20) is rotated by an outside rotation handle (33) connected to the upper roll (31). The rotary blackboard eraser according to the present invention includes: a body upper portion (10); a body side (30) connected to the body upper portion; the upper roll (31) and the lower roll (32) built into a body and connected to the body side; the cloth (20) connected to the roll; and the rotation handle connected to the upper roll (31) and provided outside the body side portion (30). As the cloth rotates, the frequency of eraser washing during use is reduced, and thus the washing can be facilitated. In addition, the present invention is economical and environment-friendly because the cloth can be supplemented. |
