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US 2012/0067151 A1Published application
Worm drive
AssigneeJtekt Corporation
InventorArata KIKUCHI
Life of this patent
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Abstract
A worm wheel of a worm drive includes an annular synthetic resin member having tooth portions meshing with a worm shaft and a core having an outside diameter portion joined to an inside diameter portion of the synthetic resin member. The outside diameter portion of the core has first joining tooth portions that protrude outward in a radial direction and are joined to the inside diameter portion of the synthetic resin member. Each of the first joining tooth portions includes a widening portion whose width in a circumferential direction increases toward the outside in the radial direction.
Claims15
A worm drive comprising:
- a worm shaft;
- and
- a worm wheel that includes an annular synthetic resin member having tooth portions meshing with the worm shaft and a core having an outside diameter portion joined to an inside diameter portion of the synthetic resin member, the outside diameter portion of the core having joining tooth portions that protrude outward in a radial direction of the worm wheel and are joined to the inside diameter portion of the synthetic resin member, wherein
- each of the joining tooth portions includes a widening portion whose width in a circumferential direction of the worm wheel increases toward the outside in the radial direction.
1 more element
Dependencies are inferred from the claim text.