Plastic chain box

• Main Author: ZHANGSHENG,XIONG CHEN
• Format: Patent
• Language: English
• Published: 24.01.2007
• Subjects: ACCESSORIES PECULIAR TO CYCLES AND NOT OTHERWISE PROVIDED FOR,e.g. ARTICLE CARRIERS, CYCLE PROTECTORS; CYCLE SADDLES OR SEATS; LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS; PERFORMING OPERATIONS; TRANSPORTING

This utility model discloses a motorcycle plastic chain box, comprising an upper chain box and a lower chain box. The joining face of the upper and lower chain boxes is connected by tenon. The tenon is a setting flashboard that is integrative to the middle part of the joining face, and a protruding head is set at the flashboard. The middle joining face of the lower chain box is correspondingly set with flashboard grooves, and the groove wall of the flashboard groove is correspondingly set with a pit. When the tenon is joined, the protruding head is got stuck in the pit and the flashboard and the flashboard groove are matched excessively or in a little interference. The distance of the pit away from the joining face is larger than or equivalent to that of the protruding head away from the joining face. This utility model is provided with the features that the invention eliminates or abates the strange noises that are generated as the friction of the chain and chain box and the convenient folding of the upper and lower chain boxes forms an integral part, featured with nice outline, simple making, convenience for disassembly, strong distortion resisting capability, convenience for installation and use and low cost.