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US 2015/0082930 A1Published application
Gear mechanism and manufacturing method of gear mechanism
AssigneeToyota Jidosha Kabushiki Kaisha
InventorDaisuke Okamoto
Life of this patent
Estimating the term…
Abstract
In a gear mechanism that includes a gear in which a tooth trace is twisted at a predetermined angle with respect to an axial direction, a curvature radius along a line of contact at a meshing position where a line of contact does not intersect a pitch circle is formed larger than a curvature radius along a line of contact at a meshing position where a line of contact intersects a pitch circle, on a plane of action of the gear.
Claims12
A gear mechanism comprising:
- a helical gear in which a first curvature radius along a first line of contact at a meshing position where a line of contact does not intersect a pitch circle is larger than a second curvature radius along a second line of contact at a meshing position where a line of contact intersects a pitch circle, on a plane of action of the helical gear.
A manufacturing method of a gear mechanism, the gear mechanism including a helical gear, the manufacturing method comprising:
- forming the helical gear in which a first curvature radius along a first line of contact at a meshing position where a line of contact does not intersect a pitch circle is larger than a second curvature radius along a second line of contact at a meshing position where a line of contact intersects a pitch circle, on a plane of action of the helical gear, by forging.
Dependencies are inferred from the claim text.