Portable teaching board for outdoor English teaching
The utility model discloses a portable teaching board for outdoor English teaching. Plate body, the board body comprises a main board block and an auxiliary board block, a partition plate is arranged in the main plate block, fixing frames are arranged on the outer walls of the two sides of the main...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The utility model discloses a portable teaching board for outdoor English teaching. Plate body, the board body comprises a main board block and an auxiliary board block, a partition plate is arranged in the main plate block, fixing frames are arranged on the outer walls of the two sides of the main plate block, a supporting frame rotationally connected with the main plate block through a rotating shaft is installed below the partition plate, a limiting column is installed at the top of the partition plate, and a rotating limiting sleeve is installed at the position, corresponding to the supporting frame, below the main plate block. When a user finds that the area of the writing board is small; the plate frame can be directly pulled up; when the first writing board movable groove is completely pulled open, the ejection spring can directly push out the auxiliary movable writing board to enable the auxiliary movable writing board to be flush with the main board block, then a user pulls the board block frame to a |
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