| 摘要 |
PROBLEM TO BE SOLVED: To provide a holder of a cutting razor that facilitates cutting work. SOLUTION: The cutting razor 1 is furnished with a holder portion 2 and an edge portion 3. The holder portion 2 is furnished with a handle portion 4 and an edge mounting member 5. The edge mounting member 5 is insert molded integrally with the handle portion 4. A finger insertion hole 7 is formed at the base of the handle portion 4. The short diameter (effective diameter of the finger insertion hole 7) T of the finger insertion hole 7 (nearly elliptic) is set as a length that allows the cutting razor 1 to be rotated freely with the third finger inserted into the finger insertion hole 7. The length M from the tip of a finger hooking portion 8 to the finger hooking portion 8 of the finger insertion hole 7 in the longitudinal direction of the handle portion 4 is set at 1.4 times the effective diameter T of the finger insertion hole 7. The length L from the edge holding portion 5b side edge portion of the finger insertion hole 7 in the longitudinal direction of the handle portion 4 is set at 3.2 times the effective diameter T of the finger insertion hole 7.
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