English word memory assisting device
The utility model discloses an English word memory assisting device, relating to the field of English teaching aids. The English word memory assisting device is used for solving the problems in the existing English word memory assisting device that rotary shafts rotate inaccurately and time is waste...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The utility model discloses an English word memory assisting device, relating to the field of English teaching aids. The English word memory assisting device is used for solving the problems in the existing English word memory assisting device that rotary shafts rotate inaccurately and time is wasted. According to the English word memory assisting device, the rear part of the lower edge of an upper cover and the rear part of the upper edge of a box body are hinged through hinges, a first rotary shaft and a second rotary shaft are arranged in parallel in the box body, the first rotary shaft is arranged in front of the second rotary shaft, one ends of the first and second rotary shafts are rotatably connected with the left sidewall of the box body, the other ends of the first and second rotary shafts penetrate through the right sidewall of the box body and extend out, a portion, extending out of the right sidewall of the box body, of the second rotary shaft is fixedly connected with a ratchet wheel, a portion, |
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