US 11,912,316 B2
Vehicle coupler, coupler tongue and coupler body
Qingmin Meng, Heilongjiang (CN); Yingjun Cui, Heilongjiang (CN); Yan Wang, Heilongjiang (CN); Pengdi Jin, Heilongjiang (CN); Changchun Wang, Heilongjiang (CN); and Shengguo Cong, Heilongjiang (CN)
Assigned to CRRC QIQIHAR ROLLING STOCK CO., LTD., Heilongjiang (CN)
Appl. No. 16/975,897
Filed by CRRC QIQIHAR ROLLING STOCK CO., LTD., Heilongjiang (CN)
PCT Filed Jun. 26, 2019, PCT No. PCT/CN2019/092973
§ 371(c)(1), (2) Date Aug. 26, 2020,
PCT Pub. No. WO2020/001468, PCT Pub. Date Jan. 2, 2020.
Claims priority of application No. 201810701432.3 (CN), filed on Jun. 29, 2018.
Prior Publication US 2021/0001899 A1, Jan. 7, 2021
Int. Cl. B61G 3/06 (2006.01)
CPC B61G 3/06 (2013.01) 10 Claims
OG exemplary drawing
 
1. A coupler knuckle comprising
an upper traction platform,
a lower traction platform,
an upper impact platform,
a lower impact platform,
a pin hole and
a neck portion,
wherein a section R of a traction surface of the upper traction platform and a section S of a traction surface of the lower traction platform are obtained by sectioning the coupler knuckle along any vertical plane passing through an axis of the pin hole; and
a perpendicular distance between a point on the section R closest to the neck portion and the axis of the pin hole is defined as k, and a perpendicular distance between a point on the section S closest to the neck portion and the axis of the pin hole is defined as m, and n=|k−m| and 10 mm≤n≤25 mm.