• 外胎

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1. The invention can conveniently dilate the outer tyre by matching the first pulling buckle with the second pulling buckle.
   本发明通过第一拉扣与第二拉扣的配合，可以很方便地对轮胎外胎进行扩张。
2. The invention discloses an outer tyre dilator of a tyre, and solves the dilatation problem of the outer tyre.
   本发明公开了一种轮胎外胎扩张器，解决轮胎外胎扩张问题。