No chain bicycle transmission ware and ratchet combination device
The utility model provides a no chain bicycle transmission ware and ratchet combination device, it is equipped with a gear box, a footboard drive unit, an umbelliform gear in back and a driving element, this gear box is equipped with one and is perpendicular setting and the footboard drive unit that...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The utility model provides a no chain bicycle transmission ware and ratchet combination device, it is equipped with a gear box, a footboard drive unit, an umbelliform gear in back and a driving element, this gear box is equipped with one and is perpendicular setting and the footboard drive unit that is linked together and holds and establish the umbelliform gear in hole and back and hold and establish the hole, this footboard drive unit include a drive shaft, a ratchet device, one set establish the barrel and one before umbelliform gear, this ratchet device is equipped with the ratchet heart and a notched ratchet wheel shell who has sour jujube wheel claw, this cover is established the barrel and is equipped with a first barrel and a second barrel, the umbelliform gear in this back is equipped with a gear portion and an appearance is chosen a place to give a banquet, use provide one can avoid stopping to step on the running -board after, the running -board lasts and rotates and the risk of injury shank, can a |
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