How to make a great magnetic Sketchpad?
At the bottom of the degaussing rod is positioned in a guide groove is arranged on the side of the pulley set by some rail side rolling on the floor; by setting some scroll wheels on the side of the chute is arranged on the bottom plate at the side of the bar in the slider degaussing. The pulley is rolled along the guide rail to reduce the friction between them. The pulley and the runner roll together to reduce the friction between them, so that the stick can be easily left and right parallel movement, and prolong the service life of the magnetic drawing board.
When you want to remove the writing surface on the text or picture, or left or right moving parallel degaussing rod under the action of magnetic force, the magnetic material adsorption to colored writing board on the bottom surface of the writing surface, is restored to the blank shape for writing again. Thus, the degaussing rod is an important component of the magnetic drawing board. Although the erasing stick of the existing magnetic drawing board can play the function of restoring the magnetic writing board to a blank shape, the structure of the eraser bar has defects, that is, a slide block and a guiding groove are adopted. When moving to the left when the degaussing rod, sliding friction at the front left and right rear side and bottom plate on the slider bar, when degaussing moves to the right, the right front side and slide friction sliding rear left and bottom plate, guide groove and a guide rail on the bottom friction is also true. Because of the surface contact friction, after a period of time, the slider is worn into a diamond, and the guide rail on the bottom plate is worn out to form a flat surface, and the erasing stick is difficult to move in parallel. Once the stick can not be easily parallel movement, the drawing board is difficult to use or even scrapped, affecting its service life.
The magnetic drawing board of the prior art is composed of a bottom board, a magnetic writing board, a degaussing bar and a magnetic pen. The bottom plate is provided with a sliding groove and a guide rail; the magnetic writing board is an interlayer structure; the writing surface and the bottom surface are arranged; the writing surface is made of translucent plastic film; the interlayer is filled with colored magnetic material. When the magnetic pen in writing or drawing on the writing surface, non ferrous magnetic material in the interlayer, under the action of magnetic force with the trajectory of the tip of the writing surface adsorbed on the translucent, forming a visible text or picture. The erasing bar is arranged on the bottom surface of the writing board, and is provided with a bar shaped magnetic material, a slide block, a guide groove and a handle, wherein the strip magnetic material is clung to the bottom surface of the writing board.
The utility model discloses a magnetic drawing board, which comprises a bottom plate, degaussing rod and magnetic writing board, degaussing rod is positioned on the bottom plate, the magnetic writing board is placed on top of the characteristics of degaussing rod, is arranged on the bottom board and the sliding rail, the degaussing stick is provided with strip-shaped magnetic materials; in some can guide rail sliding on the set in the corresponding position of the bottom plate is provided in the bottom bar degaussing, degaussing stick is arranged corresponding to the position of the slider sliding chute is arranged in some on the floor;
