Title:
ドライバービット
Document Type and Number:
Japanese Patent JP6898672
Kind Code:
B2
Abstract:
To provide a driver bit configured so that a service life of the driver bit can be improved while preventing a blade part from being damaged.SOLUTION: A driver bit 1 is formed in a shaft shape, which comprises a buffer shaft part 4 provided between one end part and the other end part in a shaft line direction of the driver bit 1, where on an outer surface of the buffer shaft part 4 are formed a plurality of plastic deformation parts 40 that are recessed concavely toward inside in a radial direction of the buffer shaft part 4 and are discontinuous to each other. The plurality of plastic deformation parts 40 are aligned in the shaft line direction and in a circumferential direction having a center line of the driver bit 1 as a center, and high-rigid parts 41 higher in rigidity than the plastic deformation parts 40 are formed between the plastic deformation parts 40 adjacent in the shaft line direction and between the plastic deformation parts 40 adjacent in the circumferential direction.SELECTED DRAWING: Figure 1
Inventors:
Jiro Taguchi
Kodama Shomune
Kodama Shomune
Application Number:
JP2019236285A
Publication Date:
July 07, 2021
Filing Date:
December 26, 2019
Export Citation:
Assignee:
Vessel Industry Co., Ltd.
International Classes:
B25B15/00
Domestic Patent References:
| JP1270355S | ||||
| JP2016078168A | ||||
| JP2014151374A |
Attorney, Agent or Firm:
Fujimoto Partners Corporation