Title:
BALL BEARING FOR WAVE REDUCER
Document Type and Number:
WIPO Patent Application WO/2023/238196
Kind Code:
A1
Abstract:
A ball bearing for a wave reduction gear according to the present disclosure has a retainer 36. The retainer 36 has an annular body 40 and a plurality of prongs 42. A space surrounded by a pair of opposing surfaces 42a of a pair of prongs 42 is a pocket 37. The pairs of opposing surfaces 42a have second flat surfaces 46 parallel to first imaginary planes P1, recessed curved surfaces 47 smoothly inclined toward the insides of the pockets 37 from radially inner-side edges 46a of the second flat surfaces 46, first corner curved surface parts 48 connecting first flat surfaces 43 and the second flat surfaces 46, and second corner curved surface parts 49 connecting the first flat surfaces 43 and the recessed curved surfaces 47. Section contour lines L1 of the first corner curved surface parts 48 when the first corner curved surface parts 48 are sectioned by second imaginary planes P2 perpendicular to the first imaginary planes P1 and parallel to a center axis C2, and section contour lines L2 of the second corner curved surface parts 49 when the second corner curved surface parts 49 are sectioned by third imaginary planes P3 perpendicular to the first imaginary planes P1 and parallel to the center axis C2, are circular arcs having a radius smaller than the radius of a plurality of balls 35.
Inventors:
HAYAKAWA KEIJI (JP)
Application Number:
PCT/JP2022/022807
Publication Date:
December 14, 2023
Filing Date:
June 06, 2022
Export Citation:
Assignee:
JTEKT CORP (JP)
International Classes:
F16C33/38; F16H1/32
Foreign References:
| JPS6069851U | 1985-05-17 | |||
| JPS6272945A | 1987-04-03 | |||
| JP2017194135A | 2017-10-26 |
Attorney, Agent or Firm:
SUNCREST PATENT AND TRADEMARK ATTORNEYS (JP)
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