Rack bush
AssigneeJtekt Corporation
InventorAkitake KAWAKUBO
Life of this patent
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Abstract
A rack bush, which constitutes a rack and pinion type steering system and supports a rack shaft in which rack teeth are formed at one circumferential portion, includes a bush main body and a rigidity reducing portion. The bush main body has an annular shape into which the rack shaft is inserted. The bush main body is divided, in a circumferential direction, into two portions including a rack teeth-side portion located on the same side as the rack teeth in the circumferential direction and a back face-side portion other than the rack teeth-side portion. The rigidity reducing portion is provided in the rack teeth-side portion, and makes a rigidity of the rack teeth-side portion lower than a rigidity of the back face-side portion.
Claims7
A rack bush constituting a rack and pinion type steering system and supporting a rack shaft in which rack teeth are formed at one circumferential portion, the rack bush comprising:
- an annular bush main body into which the rack shaft is inserted, and which is divided, in a circumferential direction, into two portions including a rack teeth-side portion located on the same side as the rack teeth in the circumferential direction and a back face-side portion other than the rack teeth-side portion;
- and
- a rigidity reducing portion that is provided in the rack teeth-side portion, and that makes a rigidity of the rack teeth-side portion lower than a rigidity of the back face-side portion.
Dependencies are inferred from the claim text.