The invention provides a frame middle pipe and bushing combined structure for an electric bicycle. A middle pipe of a frame is divided into a first pipe part and a second pipe part in the axial direction. The inner wall of the first pipe part is smooth, and convex ribs are arranged on the inner wall of the second pipe part; the bushing is provided with a through groove along the bus, the thicknessof the bushing is larger than or equal to the protruding height of the protruding rib, and the length of the bushing is smaller than or equal to the length of the first pipe part; the lining is placed in the middle pipe, and the outer wall of the lining is tightly attached to the inner wall of the first pipe part. The combined structure can protect the battery box.
本发明提供了本发明提供了一种用于电动自行车的车架中管和衬套的组合结构,车架的中管沿着轴向分为第一管部和第二管部;第一管部的内壁光滑,第二管部的内壁设置有凸筋;衬套沿着其母线开通槽,衬套的厚度大于或等于凸筋的凸起高度,衬套的长度小于或等于第一管部的长度;衬套放入中管内,并且,衬套的外壁紧贴第一管部的内壁。本发明的组合结构能够保护电池盒。
Frame middle pipe and bushing combined structure for electric bicycle
一种用于电动自行车的车架中管和衬套的组合结构
2020-09-11
Patent
Electronic Resource
Chinese
European Patent Office | 2020
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