Blackboard eraser provided with magnetic block and telescopic handle
A blackboard eraser and magnetic block technology, applied in the field of blackboard eraser, can solve the problems of easily polluting teachers, polluting desks and teaching materials, etc.
Inactive Publication Date: 2013-05-29
骆世敏
View PDF0 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0002] The blackboard erasers used in schools are all used directly by hand, and they are placed directly on the teacher's desk after use. This traditional blackboard eraser is easy to pollute the teacher's hands, and directly pollutes the teacher's hands when placed on the desk. Lecture desks and teaching materials
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0008] Shown in the embodiment of the drawings: the blackboard eraser is equipped with a magnetic block 2 and a telescopic handle 3 on the back side of the eraser body 1 .
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention provides a blackboard eraser provided with a magnetic block and a telescopic handle. The magnetic block and the telescopic handle are arranged on the back of a blackboard eraser body, and the magnetic block can conveniently absorb the blackboard eraser through a corresponding block which is arranged on the lower portion of a blackboard, so that the phenomenon that the a blackboard eraser is prone to polluting teaching materials and a teacher desk when placed on the teacher desk is avoided. The telescopic handle can be used for conveniently wiping chalk characters on high positions of the blackboard and enables hands not to touch the board body directly and not to be polluted.
Description
technical field [0001] The invention relates to a blackboard eraser, in particular to a blackboard eraser with a magnetic block and a retractable handle. Background technique [0002] The blackboard erasers used in schools are all used directly by hand, and they are placed directly on the teacher's desk after use. This traditional blackboard eraser is easy to pollute the teacher's hands, and directly pollutes the teacher's hands when placed on the desk. Lecture table and teaching materials. Contents of the invention [0003] The invention provides a blackboard eraser with a magnetic block and a retractable handle. The handle can be held to wipe the blackboard. After use, the eraser can be directly attached to the bottom of the blackboard to avoid polluting the desk. [0004] The invention includes an eraser of a blackboard eraser, and the adopted technical solution is that: the blackboard eraser is equipped with a magnetic block and a telescopic handle on the back of the ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): B43L21/04B43L12/02
Inventor 骆世敏
Owner 骆世敏