Interdental brush

Abstract

To provide an interdental brush that offers a satisfying feeling of thorough interdental cleaning and a comfortable feel during use. [Solution] The device comprises a gripping portion and a brush portion extending from a support portion provided on the gripping portion in the direction away from the gripping portion in the longitudinal direction. The brush portion has a base end supported by the support portion and extends in the longitudinal direction, and at least two of the multiple main shafts that form an outer shell with a convergent tip are spiral in shape. In a side view taken in a direction perpendicular to the longitudinal direction, the distance from the central axis along the longitudinal direction increases from the support portion toward the tip, and then decreases until the tip converges. When viewed in the longitudinal direction, the distance from the support portion toward the tip moves in the circumferential direction with respect to the central axis.

Claims

1. The gripping part, A brush portion extends from the support portion provided on the gripping portion in the longitudinal direction away from the gripping portion, Equipped with, The brush portion has a plurality of main shafts, the base end of which is supported by the support portion and extends in the direction of the long axis, and the tip of which converges to form an outer shell. Of the multiple main shafts, at least two are In a side view taken in a direction perpendicular to the aforementioned long axis, the distance from the central axis along the long axis increases as you move from the support portion toward the tip, and then decreases until the tip converges. An interdental brush having a spiral shape that extends in a direction moving in the circumferential direction around the central axis as viewed in the longitudinal direction from the support portion toward the tip.

2. At least one of the multiple main spindles has a different twist angle. The interdental brush according to claim 1.

3. Having a plurality of intersection lines connecting adjacent principal shafts in the circumferential direction, The interdental brush according to claim 1.

4. The aforementioned main shafts consist of two or more and eighteen or fewer shafts. The aforementioned intersection lines number between two and ten. The interdental brush according to claim 3.

5. Multiple of the aforementioned main shafts are fused together at their tips. An interdental brush according to any one of claims 1 to 4.

6. A central axis located on the aforementioned central axis, with its base end supported by the support portion and its tip converging with the main axis, An interdental brush according to any one of claims 1 to 4.

Images