Angle impact tools

Patent metadata

Field	Value
Publication number	US-9592600-B2
Application number	US-201414251552-A
Country	US
Kind code	B2
Filing date	Apr 11, 2014
Priority date	Feb 23, 2011
Publication date	Mar 14, 2017
Grant date	Mar 14, 2017

Abstract

In at least one illustrative embodiment, an angle impact tool may comprise a handle assembly extending along a first axis and supporting a motor, the motor including a shaft configured to rotate about the first axis, and a work attachment coupled to the handle assembly. The work attachment may comprise an impact mechanism including an anvil configured to rotate about a second axis that is non-parallel to the first axis and a hammer configured to rotate about the second axis to periodically deliver an impact load to the anvil, a gear assembly configured to transfer rotation from the shaft of the motor to the hammer of the impact mechanism, and a housing supporting the impact mechanism and the gear assembly. The housing may be partitioned along a first parting plane that is perpendicular to the second axis such that the housing includes first and second housing sections.

First claim

The invention claimed is:

1. An angle impact tool comprising:
a handle assembly extending along a first axis and supporting a motor, the motor including a shaft configured to rotate about the first axis;
a work attachment coupled to the handle assembly, the work attachment comprising:
an impact mechanism including an anvil configured to rotate about a second axis that is non-parallel to the first axis and a hammer configured to rotate about the second axis to periodically deliver an impact load to the anvil to cause rotation of the anvil about the second axis;
a gear assembly configured to transfer rotation from the shaft of the motor to the hammer of the impact mechanism;
a housing supporting the impact mechanism and the gear assembly, wherein the housing is partitioned along a first parting plane that is perpendicular to the second axis such that the housing includes a first housing section and a second housing section;
wherein the first axis is parallel to the first parting plane; and
wherein the first and second housing sections are also partitioned along a second parting plane that is perpendicular to the first axis.

2. The angle impact tool of claim 1 , wherein the first axis lies in the first parting plane.

3. The angle impact tool of claim 1 , wherein the first axis is spaced apart from the first parting plane.

4. The angle impact tool of claim 3 , wherein the first axis intersects the second axis between (i) a position of the anvil along the second axis and (ii) a point at which the second axis intersects the first parting plane.

5. The angle impact tool of claim 3 , wherein the first parting plane intersects the second axis between (i) a position of the anvil along the second axis and (ii) a point at which the second axis intersects the first axis.

6. The angle impact tool of claim 1 , wherein the second housing section is removably coupled to the first housing section by a plurality of fasteners, each of the plurality of fasteners extending through a corresponding aperture formed in the second housing section and being received in a corresponding bore formed in the first housing section.

7. The angle impact tool of claim 6 , wherein each of the corresponding apertures formed in the second housing section is recessed from an exterior profile of the second housing section such that each of the plurality of fasteners that removably couples the second housing section to the first housing section does not extend beyond the exterior profile of the second housing section.

8. The angle impact tool of claim 6 , further comprising a gasket positioned between the first and second housing sections to provide a fluid seal when the second housing section is removably coupled to the first housing section by the plurality of fasteners.

9. The angle impact tool of claim 1 , wherein:
the first housing section is formed to include a first bore extending along the first axis, a second bore extending along the second axis, and a third bore extending along a third axis that is parallel to the second axis, the third bore being positioned between the first and second bores and overlapping both the first and second bores;
the impact mechanism is positioned in the second bore; and
the gear assembly is positioned at least partially within the first and third bores.

10. The angle impact tool of claim 9 , wherein the second housing section is formed to include a fourth bore extending along the second axis and a fifth bore extending along the third axis.

11. The angle impact tool of claim 10 , wherein the work attachment further comprises a plurality of pins that each extend into a corresponding bore formed in the first housing section and into a corresponding bore formed in the second housing section such that the plurality of pins align the fourth bore with the second bore and the fifth bore with the third bore.

12. The angle impact tool of claim 10 , wherein:
the first housing section is formed to include a shoulder that protrudes toward the second housing section; and
the second housing section is formed to include a lip that protrudes toward the first housing section, the lip engaging the shoulder such that the fourth bore is aligned with the second bore and the fifth bore is aligned with the third bore.

13. The angle impact tool of claim 9 , wherein the gear assembly includes (i) a first bevel gear positioned in the first bore of the first housing section and configured to rotate about the first axis and (ii) a second bevel gear positioned in the third bore of the first housing section and configured to rotate about the third axis, and wherein the second bevel gear meshes with the first bevel gear.

14. The angle impact tool of claim 13 , wherein:
the first bore comprises adjacent first and second bore sections, the second bore section having a smaller diameter than the first bore section and being located closer to the third bore than the first bore section, the first bore section being bounded by a first internal surface of the first housing section, the second bore section being bounded by a second internal surface of the first housing section;
the first bevel gear includes a shaft that extends along the first axis and comprises adjacent first and second shaft sections, the second shaft section having a larger diameter than the first shaft section, the first shaft section being positioned within the first bore section, the second shaft section being positioned within the second bore section; and
a bearing that supports the first bevel gear for rotation about the first axis and engages both the first shaft section and the first internal surface abuts both the second shaft section and the second internal surface to align the first and second bevel gears.

15. The angle impact tool of claim 1 , wherein the work attachment is removably coupled to the handle assembly by a plurality of fasteners, each of the plurality of fasteners extending through a corresponding aperture formed in the first housing section and being received in a corresponding bore formed in the handle assembly, each corresponding bore extending along an axis that is disposed at an acute angle to the first axis.

16. A work attachment comprising:
a housing body configured to be coupled to a motorized tool including a rotatable output shaft, the housing body being formed to include (i) a first bore extending along a first axis, (ii) a second bore extending along a second axis that is perpendicular to the first axis, and (iii) a third bore extending along a third axis that is perpendicular to the first axis, wherein the third bore is positioned between the first and second bores and overlaps both the first and second bores;
an impact mechanism received in the second bore of the housing body, the impact mechanism including a hammer configured to rotate about the second axis to periodically deliver an impact load to an anvil to cause rotation of the anvil about the second axis;
a gear assembly received at least partially in the first and third bores of the housing body, the gear assembly configured to be coupled to the rotatable output shaft of the motorized tool such that rotation of the output shaft about the first axis drives rotation of the hammer about the second axis;
a housing cap removably coupled to the housing body by a plurality of fasteners to enclose the second and third bores, the housing cap abutting the housing body along a first parting plane that is perpendicular to the second and third axes; and
wherein the housing cap also abuts the housing body along a second parting plane that is perpendicular to the first axis.

Assignees

• Ingersoll-Rand Company

Inventors

• Seith Warren Andrew
• Taylor Lucas James
• Mcclung Mark T
• Zimmer Kenneth James

Classifications

• B25F5/02 Primary

  Construction of casings, bodies or handles {(B25F5/006, B25F5/008 take precedence)} · CPC title

• B25B21/026

  Impact clutches · CPC title