Simple blackboard
A blackboard and simple technology, applied in the field of cultural and educational supplies, can solve the problems of inconvenient replacement of the board surface, inconvenience and inability to use
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[0012] The specific embodiment of this simple and easy blackboard is illustrated in conjunction with accompanying drawing. as the picture shows:
[0013] This simple blackboard is shown in the figure: it adopts aluminum alloy bracket 1, and its size: width X height is 1650 X 1400mm. Aluminum alloy frame 2, its size: length X width is 1500 X 1000mm. The board surface 3 is an equal-area iron clip 4 sandwiched by two white plastic panels, and its size: length X width X thickness is 1450 X 950 X 45mm. Caster 15 is universal wheel. When the board is replaced, as long as the handle 12 is lifted, the ratchet 9 is pulled up, the ratchet 8 rotates 180 degrees with the central axis 5, and the handle 12 is put down, the ratchet 9 can be extended into the square tooth mouth, thereby Fix the central axis 5 and the frame 2, and the whole board is turned over and positioned.
[0014] The simple blackboard has a clean and beautiful board surface, adopts a ratchet mechanism to make the boa...
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