Automatic eraser

The utility model relates to an automatic eraser suitable for pupils, the structure of which is as follows: a core drum is arranged in a base sleeve and an external rotary drum is sheathed outside the base sleeve; a clip is arranged on the wall of the core drum and penetrates through a vertical slot...

Full description

Saved in:
Bibliographic Details
Main Author AN GUORUI
Format Patent
LanguageChinese
English
Published 30.12.2009
Subjects
ACCESSORIES FOR WRITING OR DRAWING
ARTICLES FOR WRITING OR DRAWING UPON
BUREAU ACCESSORIES
PERFORMING OPERATIONS
TRANSPORTING
WRITING OR DRAWING IMPLEMENTS
Online AccessGet full text

Cover

More Information
Summary:The utility model relates to an automatic eraser suitable for pupils, the structure of which is as follows: a core drum is arranged in a base sleeve and an external rotary drum is sheathed outside the base sleeve; a clip is arranged on the wall of the core drum and penetrates through a vertical slot on the base sleeve, and is embedded in a spiral sliding slot on the inner wall of the external rotary drum; and an eraser core bar is inserted in the core drum. The automatic eraser utilizes the external rotary drum to drive the core drum to lift in the base sleeve so as to lead the eraser core bar to extend or retract in the base sleeve, thus preventing hands of pupils from touching the eraser directly and being smeared in the wiping process, and protecting the eraser core bar and avoiding the problem of shortening the service life of the eraser due to forcible breakage simultaneously.
Bibliography:Application Number: CN20092101953U