Working machine

Patent metadata

Field	Value
Publication number	US-2024139922-A1
Application number	US-202118546653-A
Country	US
Kind code	A1
Filing date	Dec 24, 2021
Priority date	Mar 31, 2021
Publication date	May 2, 2024
Grant date	—

Abstract

Provided is a working machine with improved durability. A nail driver (working machine) includes a hitting portion that is formed in a rod shape extending about an axis line, an injection portion that abuts on an outer peripheral surface of the hitting portion, thereby guiding a movement of the hitting portion toward one side in the axial direction, and a supply portion that energizes a fastener toward one side in a direction intersecting with the axial direction, thereby supplying the fastener to the injection portion. The hitting portion has a tip part, and a center part provided at a position different from that of the tip part in the axial direction. At least a part of an outer peripheral surface of the tip part (tip part outer peripheral surface) on an anti-feeder side with respect to the axis line protrudes from an outer peripheral surface of the center part (center par outer peripheral surface) on a supply portion side with respect to the axis line.

First claim

1 . A working machine comprising:
a hitting portion formed in a rod shape that extends about an axis line, and moving to one side in an axial direction to hit a fastener; an injection portion contacting with an outer peripheral surface of the hitting portion, thereby guiding a movement to the one side of the hitting portion in the axial direction; and a supply portion energizing the fastener on one side in a direction orthogonal to the axial direction, thereby supplying the fastener to the injection portion, wherein the hitting portion has a first part, a second part, and a third part that are provided at positions different from one another in the axial direction, an outer peripheral surface of the first part and the third part on the supply portion side with respect to the axis line does not protrude from the outer peripheral surface of the second part on the supply portion side with respect to the axis line, and at least a part of an outer peripheral surface of the first part and the third part on an opposite side to the supply portion side with respect to the axis line protrudes from the outer peripheral surface of the second part on the opposite side to the supply portion side with respect to the axis line, the second part is located between the first part and the third part, either the first part or the third part abuts on the injection portion at a top dead center position of the hitting portion, and either the first part or the third part abuts on the injection portion at a bottom dead center position of the hitting portion.

2 . (canceled)

3 . (canceled)

4 . The working machine according to claim 1 ,
wherein the first part abuts on the injection portion when the hitting portion is located at the top dead center position, at the bottom dead center position, or between the top dead center position and the bottom dead center position.

5 . The working machine according to claim 1 ,
wherein a lower end surface of the hitting portion includes a hitting surface that hits the fastener, and the hitting surface is formed with such an inclination with respect to the axis line that the supply portion side protrudes from an opposite side of the supply portion toward the one side in the axial direction.

6 . The working machine according to claim 1 ,
wherein shapes of cutting surfaces of the first part and the second part in a direction orthogonal to the axial direction have similar shapes.

7 . The working machine according to claim 1 ,
wherein the supply portion presses another fastener against the hitting portion along a direction intersecting with the axial direction in a process in which the hitting portion hits the fastener.

8 . The working machine according to claim 1 ,
wherein a protrusion amount of the first part with respect to the second part is 0.05% or more and less than 0.5% with respect to a length of the second part in the axial direction.

Assignees

• Koki Holdings Co Ltd

Inventors

• Kawamata Takashi
• Miura Masahiro
• Ootsuka Kazuhiro

Classifications

• B25C1/001 Primary

  Nail feeding devices (B25C1/184 takes precedence) · CPC title

• B25C1/04

  operated by fluid pressure {, e.g. by air pressure} · CPC title

• B25C7/00

  Accessories for nailing or stapling tools, e.g. supports (for tools operated by detonation of a cartridge B25C1/18) · CPC title