Caliber-adjustable cup brush for cleaning outer wall of cup

The utility model provides a caliber-adjustable cup brush for cleaning the outer wall of a cup. The toothbrush comprises a grip, a connecting rod, two arc-shaped brush heads and a spring, the threadedend of the connecting rod is in threaded fit with the grip, a connecting cylinder is arranged in the middle of the other end of the connecting rod, one ends of the two brush heads protrude out of a circular ring and can sleeve the connecting cylinder, the other ends of the two brush heads are connected through the spring, and bristles are arranged on the inner sides of the arc-shaped brush heads.The bristles are arranged on the inner side of the brush head, so that the outer wall and the rim of the cup are convenient to clean; the caliber can be adjusted to clean different cups. 本实用新型提供一种口径可调的用于清洗杯子外壁的杯刷，包括握把、连接杆、两个弧形刷头、弹簧，连接杆螺纹端与握把螺纹配合，另一端中部设连接圆柱，两个刷头的一端突出一个圆环，能够套在连接圆柱上，另一端通过弹簧连接，弧形刷头内侧设有刷毛。本实用新型刷毛设在刷头内侧，方便清洁杯子外壁和杯口；能够调节口径清洗不同的杯子。