Utilize gyro wheel to come sharp pen that conveniently draws up

The utility model provides an utilize gyro wheel to come sharp pen that conveniently draws up relates to office supplies technical field, including a body and assistance device, help the device to include panel, connecting plate and driver, the middle part of panel is reserved there is the confession a frame of body grafting usefulness, the panel with the connecting plate is connected, the connecting plate with the driver is connected, it has the spiale transversely to run through on the driver, the spiale rotates to be connected on the driver, the both ends of spiale all are connected with the gyro wheel. The utility model discloses an useful part is, the structure is ingenious, convenient and practical, and easy operation can realize automatic lineation, and drawing of the big breadth engineering drawing of specially adapted or building engineering rule, and indoor measurement, reconnaissance, design are rule and are used. 本实用新型提供种利用滚轮来方便画出直线的笔，涉及办公用品技术领域，包括笔本体以及协助装置，所述协助装置包括面板、连接板和驱动器，所述面板的中部预留有供所述笔本体插接用的笔