Trolley box shaking around is normal

Trolley is the luggage we travel and travel, because the PC trolley with trolley and wheel, as well as large capacity, travel is a very convenient and efficient good companion. Trolley brand is now on the market a variety of flooding, to counterfeit, shoddy very much, especially the Internet to confuse our Trolley Case is more and more fake. Imagine if travel when the trolley case there is a problem, then it should be the biggest trouble. So choose a good quality trolley case, choose a good brand of trolley case is very necessary around the trolley case is normal swinging lever is normal, unless you want to do a bit of steel welding. World famous brand of box lever has such a problem. 
1. Spring button connecting rod and lever. 
2. Big rod tube small rod tube, the middle of the natural gap, otherwise two rod tube contact too tight pull out. In the built-in rod and spring connection has a plastic ring sets, but also play a stabilizing role.