English learning shorthand apparatus
A shorthand, English technology, applied in educational appliances, instruments, teaching aids, etc., can solve the problems of difficulty in concentration and unsatisfactory effect, and achieve the effect of optimizing the layout of parts, saving space, and rolling comfortably
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[0030] The present invention will be further described below in conjunction with accompanying drawing.
[0031] Such as figure 1 , 2 3. An English learning shorthand device. The upper ring 1 hollow circle protrudes downwards to form an upper cylinder 2, the lower ring 3 hollow circle protrudes upwards to form a lower cylinder 4, and the cylinder 5 passes through the bearing and the described The upper cylinder 2 is connected to the lower cylinder 4, the middle column 6 passes through the cylinder 5, and the two ends are respectively fixed on the side walls of the upper cylinder 2 and the lower cylinder 4 by fixing rods 8 , the side wall of the drum 5 is provided with a longitudinal rectangular opening 7, a clockwork spring 9 is arranged inside the drum 5, the central end of the clockwork spring 9 is fixed on the central column 6, and the outer side of the clockwork spring 9 One end is connected to one end of the connecting piece 10, and the other end of the connecting piece ...
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