This utility model relates to the field of bicycle manufacturing and
processing technology, specifically disclosing a
barcode scanner for bicycle frame tubes. The
scanner body scans QR codes inside the frame tubes and wirelessly transmits the scan data. A clamping and positioning device is fixedly installed on the
scanner body. A
refraction mechanism includes a
refraction mirror, which is disposed within the clamping and positioning device. The scanner body can acquire and scan the QR codes inside the frame tubes through the
refraction mirror. This design, by introducing a refraction mechanism that works in conjunction with the scanner body, effectively refracts and partially reflects light, changing the direction of
light propagation. This increases the scanning span of the scanning camera in the scanner body, avoiding excessive blind spots. It overcomes the angle limitations of existing
barcode scanners that require tilting to scan narrow spaces, achieving multi-dimensional, accurate, and efficient scanning of QR codes inside and in narrow spaces of the frame tubes.