US 12,392,382 B2
Sintered member and electromagnetic coupling
Junpei Hara, Takahashi (JP)
Assigned to SUMITOMO ELECTRIC SINTERED ALLOY, LTD., Takahashi (JP)
Appl. No. 17/762,734
Filed by Sumitomo Electric Sintered Alloy, Ltd., Takahashi (JP)
PCT Filed Aug. 17, 2020, PCT No. PCT/JP2020/031031
§ 371(c)(1), (2) Date Mar. 23, 2022,
PCT Pub. No. WO2021/065221, PCT Pub. Date Apr. 8, 2021.
Claims priority of application No. 2019-182666 (JP), filed on Oct. 3, 2019.
Prior Publication US 2022/0333653 A1, Oct. 20, 2022
Int. Cl. F16D 27/112 (2006.01); B22F 5/08 (2006.01); C22C 38/44 (2006.01)
CPC F16D 27/112 (2013.01) [B22F 5/08 (2013.01); C22C 38/44 (2013.01); B22F 2301/35 (2013.01); F16D 2200/0021 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A sintered member having an annular shape, comprising:
a first face facing one side in an axial direction;
a second face facing the other side in the axial direction;
an inner peripheral face connected to an inner peripheral edge of the first face; and
a plurality of tooth groups and a plurality of tooth-missing parts which are alternately disposed along a circumferential direction of the inner peripheral face, wherein
the second face includes a plurality of ball grooves arranged in parallel in the circumferential direction,
each tooth group includes a plurality of spline teeth that are continuous in the circumferential direction of the peripheral face,
the number of the plurality of tooth-missing parts is the same as the number of the plurality of ball grooves,
positions in a radial direction in which the plurality of tooth-missing parts are formed are within ranges in the radial direction in which the plurality of ball grooves are formed, and
ranges in the circumferential direction in which the plurality of tooth-missing parts are formed overlap ranges in the circumferential direction in which the plurality of ball grooves are formed.