Reinforced spool assembly

A reinforced spool assembly comprising:

• a shaft;
• a spool member coaxially mounted around the shaft, wherein a spacing is formed between an inner wall of the spool member and an outer wall of the shaft;
• two ratchets, each one of the two ratchets having
• a body mounted on and around an outer surface of the spool member and having an inner surface;
• and
• multiple teeth formed around a periphery of the body;
• wherein the two inner surfaces of the two bodies face each other, and two axial ends of the shaft protrude through the bodies of the two ratchets respectively;
• and
• wherein the body of each one of the two ratchets has a reinforced supporting structure;
• the reinforced supporting structure, the body and the teeth are integrally formed as a single part:
• the reinforced supporting structure is located between and abuts against the outer wall of the shaft and the inner wall of the spool member, the reinforced supporting structure is offset from the inner surface of the body;
• the reinforced supporting structure has multiple supporting blocks surrounding the shaft, each one of the supporting blocks has a side surface facing a middle of the shaft and offset from the inner surface of the body, and each one of the supporting blocks abuts against the shaft and the spool member;
• an imaginary extension plane of the inner surface of the body is perpendicular to a central axis of the shaft and passes through the reinforced supporting structure;
• wherein the reinforced supporting structure of the body of each one of the two ratchets has
• an inner sidewall facing the inner sidewall of the reinforced supporting structure of the body of the other ratchet;
• and
• an outer sidewall defined opposite to the inner sidewall of the reinforced supporting structure and recessed in the body;
• and
• an inner offset distance is defined between the inner sidewall of the reinforced supporting structure and the inner surface of the body;
• an outer offset distance is defined between the outer sidewall of the reinforced supporting structure and the outer surface of the body;
• and
• the inner offset distance is the same as the outer offset distance;
• wherein the spool member has multiple spool tabs formed on two axial ends of the spool member and located around the shaft at spaced intervals;
• the body of each one of the two ratchets has a center hole located at a center of the body, a supporting area located around the center hole, and multiple fixing holes disposed around the supporting area, an edge of each one of the fixing holes is adjacent to an outer periphery of the supporting area;
• the two axial ends of the shaft are respectively and fixedly inserted into the two center holes of the bodies of the two ratchets, the spool tabs formed on the two axial ends of the spool member are respectively and fixedly inserted into the fixing holes of the bodies of the two ratchets;
• each one of the supporting blocks of the reinforced supporting structure is located at the supporting area;
• the supporting blocks and the spool tabs are equal in amount, and the supporting blocks respectively correspond to the spool tabs in position;
• each one of the supporting blocks abuts between the corresponding spool tab and the shaft.