Stadia keeps reminding device
Stadia keeps reminding device relates to a myopia prevention device, especially belongs to a stadia keeps reminding device. Including support (1), bracing piece (2), warning feeler lever (3), between support (1) and bracing piece (2), by matched with coupling bolt and manual nut (4) swing joint betw...
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| Format: | Patent |
| Sprache: | eng |
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| Online-Zugang: | Volltext bestellen |
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| Zusammenfassung: | Stadia keeps reminding device relates to a myopia prevention device, especially belongs to a stadia keeps reminding device. Including support (1), bracing piece (2), warning feeler lever (3), between support (1) and bracing piece (2), by matched with coupling bolt and manual nut (4) swing joint between bracing piece and the warning feeler lever, the top of reminding the feeler lever has protection nature contact (5), is the combination of any one or the two of cotton bulb stopper, gum protective sheath etc.. The utility model discloses position of sitting and stadia to the user have the warning function, and have simple structure, convenient to use's positive effect. |
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