US 9,810,271 B2
Clutch mechanism and transmission
Isamu Shiotsu, Nagakute (JP)
Assigned to KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO, Nagakute-shi (JP)
Appl. No. 14/781,707
Filed by KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO, Nagakute-shi, Aichi-ken (JP)
PCT Filed Apr. 14, 2014, PCT No. PCT/JP2014/060625
§ 371(c)(1), (2) Date Oct. 1, 2015,
PCT Pub. No. WO2014/171424, PCT Pub. Date Oct. 23, 2014.
Claims priority of application No. 2013-084995 (JP), filed on Apr. 15, 2013.
Prior Publication US 2016/0040726 A1, Feb. 11, 2016
Int. Cl. F16H 3/08 (2006.01); F16D 21/04 (2006.01); F16D 11/14 (2006.01); F16H 3/30 (2006.01); F16D 11/00 (2006.01); F16H 63/30 (2006.01)
CPC F16D 21/04 (2013.01) [F16D 11/14 (2013.01); F16H 3/30 (2013.01); F16D 2011/004 (2013.01); F16D 2011/006 (2013.01); F16D 2300/24 (2013.01); F16H 2063/3093 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A clutch mechanism comprising:
a first rotation member;
a movable member provided with an engaging portion; and
a second rotation member provided with an engagement portion configured to engage with the engaging portion of the movable member,
wherein the first rotation member is provided with a supporting portion which supports the movable member, and the movable member is movable relative to the first rotation member along the supporting portion,
the supporting portion includes
a non-engaging portion which supports the movable member at a position where the engaging portion of the movable member does not engage with the engagement portion of the second rotation member,
a right-handed helical portion and a left-handed helical portion located closer to the second rotation member side than the non-engaging portion,
a branch portion which branches into the right-handed helical portion and the left-handed helical portion from the non-engaging portion, and
a joining portion which is located closer to the second rotation member side than the branch portion and in which the right-handed helical portion and the left-handed helical portion join, and
when the support position where the movable member is supported by the supporting portion has moved from the non-engaging portion to the branch portion, the engagement between the engaging portion of the movable member and the engagement portion of the second rotation member starts,
the clutch mechanism further comprising a restriction mechanism which restricts the movement of the movable member relative to the first rotation member when the support position where the movable member is supported by the supporting portion is a joining portion.