The utility model discloses a telescopic cosmetic brush, which solves the phenomenon that the brush
tube of the telescopic cosmetic brush in the prior art is easy to rotate when it is stretched. In the brush rod, the brush tube wraps the bristles and expands and contracts in the brush rod. The inner wall of the brush rod is provided with guiding protrusions that extend along the axis of the brush rod. The outer wall of the brush tube is provided with guide protrusions along the axis of the brush tube. The matching guide chute, the guide protrusion is embedded in the guide chute, and the cooperation of the guide protrusion and the guide chute plays a guiding role in the expansion and contraction of the brush tube, so as to ensure that the brush tube can only telescopically move. The situation of rotation avoids the phenomenon that the rotation of the brush tube drives the rotation of the bristles and damages the bristles. 1. A telescopic makeup brush, comprising a brush shaft, bristles and a brush tube. One end of the bristles is fixed in the brush shaft. The brush tube wraps the bristles and expands and contracts in the brush shaft. The feature is: A self-guided protrusion is provided, the guide protrusion extends along the axis of the brush rod, the outer brush tube r is provided with a guide chute matching the guide protrusion along the axis of the brush tube, and the guide protrusion is embedded Into the guide chute. 2. The telescopic cosmetic brush according to claim 1, wherein the guide protrusion is provided with an elastic positioning member on the side facing the bottom of the guide chute, and the bottom of the guide chute is provided with a plurality of elastic positioning members. Matching grooves are arranged uniformly along the axial direction of the brush tube. 3. The telescopic cosmetic brush according to claim 2, characterized in that the surface of the elastic positioning member in contact with the slot is arc-shaped. 4. The telescopic makeup brush according to any one of claims 1 or 2 or 3, characterized in that the extension length of the guide chute is smaller than the telescopic stroke of the brush tube in the brush rod.
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