| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem of the prior art that the tip side is the first portion to be damaged in a brush of this type, and under the existing circumstances, even if the base end side is little damaged, the brush becomes inconvenient to use, and it is discarded, resulting in exerting an undesirable influence on the environment because most of the bushes are formed of synthetic resins, and on the other hand, in the case where the brush part is replaceable, complicated machining is required for an attach and detach means, resulting in that the bush itself costs high. SOLUTION: In a brush formed by a brush base implanted with a number of bristles at the tip side, and a grip part extended from the brush base, a number of bristles implanted in the brush base are divided into plural blocks in the cross direction, and a fragile part which can be cut is provided between the blocks.
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