Globoid worm gear
AssigneeIllinois Tool Works Inc.
InventorsDidier Richard, Lionel Martin
Life of this patent
Estimating the term…
Abstract
The present disclosure relates to a globoid worm gear (4) for engagement with a worm (3) in a worm gear assembly (1). The globoid worm gear (4) includes first and second side surfaces (17, 18), a circumferential surface (10), and an axis of rotation. The globoid worm gear (4) also includes a plurality of gear teeth (9) spaced about the circumferential surface (10) with spaces (11) arranged between adjacent gear teeth (9), the plurality of gear teeth (9) being configured to engage the worm (3). The plurality of gear teeth (9) are configured such that the spaces (11) between adjacent gear teeth (9) open into the first side surface (17).
Claims12
A globoid worm gear for engagement with a worm in a worm gear assembly, the globoid worm gear comprising:
- first and second end surfaces, a circumferential surface, and an axis of rotation;
- and
- a plurality of gear teeth spaced about the circumferential surface with spaces arranged between adjacent gear teeth, the plurality of gear teeth being configured to engage the worm;
- wherein the plurality of gear teeth are configured such that the spaces between adjacent gear teeth open into the first end surface;
- wherein each of the plurality of gear teeth comprises a radially outer top surface having an end region adjacent the first end surface, wherein the end region comprises a chamfer that slopes radially inward toward the axis of rotation when moving along the chamfer in a direction toward the first end surface.
A globoid worm gear for engagement with a worm in a worm gear assembly, the globoid worm gear comprising:
- first and second end surfaces, a circumferential surface, and an axis of rotation;
- and
- a plurality of gear teeth spaced about the circumferential surface with spaces arranged between adjacent gear teeth, the plurality of gear teeth being configured to engage the worm;
- wherein the plurality of gear teeth are configured such that the spaces between adjacent gear teeth open into the first end surface;
- where the gear teeth are configured such that the spaces between adjacent gear teeth extend to only the first end surface, the second end surface comprising a flange that closes the ends of the spaces between adjacent gear teeth;
- wherein each space between adjacent gear teeth comprises a root surface that is curved in a radially outward direction of the globoid worm gear towards the flange.
A globoid worm gear for engagement with a worm in a worm gear assembly, the globoid worm gear comprising:
- first and second end surfaces, a circumferential surface, and an axis of rotation;
- and
- a plurality of gear teeth spaced about the circumferential surface with spaces arranged between adjacent gear teeth, the plurality of gear teeth being configured to engage the worm;
- wherein the plurality of gear teeth are configured such that the spaces between adjacent gear teeth open into the first end surface;
- wherein each of the plurality of gear teeth comprises a top surface, wherein each top surface comprises a first portion adjacent to the first end surface and a second portion adjacent to the second end surface, and wherein a radius of the second portion from the axis of rotation is greater than a radius of the first portion from the axis of rotation.
Dependencies are inferred from the claim text.