US 11,858,588 B2
Rear sprocket assembly and lock device
Hiroshi Fujita, Sakai (JP); and Atsuhiro Emura, Sakai (JP)
Assigned to SHIMANO INC., Sakai (JP)
Filed by SHIMANO INC., Sakai (JP)
Filed on Aug. 16, 2021, as Appl. No. 17/402,625.
Application 17/402,625 is a continuation in part of application No. 17/244,862, filed on Apr. 29, 2021, granted, now 11,603,166.
Prior Publication US 2022/0348286 A1, Nov. 3, 2022
Int. Cl. B62M 9/10 (2006.01)
CPC B62M 9/10 (2013.01) 20 Claims
OG exemplary drawing
 
1. A rear sprocket assembly configured to be mounted to a rear hub assembly for a human-powered vehicle, the rear sprocket assembly comprising:
a first sprocket being a smallest sprocket in the rear sprocket assembly and including:
a first sprocket body;
a plurality of first sprocket teeth extending radially outwardly from the first sprocket body in a radial direction with respect to a rotational center axis of the rear sprocket assembly; and
a first sprocket opening configured to receive a hub axle of the rear hub assembly in a mounting state where the rear sprocket assembly is mounted to the rear hub assembly, the first sprocket opening having a first radially minimum diameter that is smaller than an outermost diameter of a sprocket support body of the rear hub assembly; and
a lock device configured to fix the rear sprocket assembly to the sprocket support body of the rear hub assembly in the mounting state and including:
a first lock member including:
a first axial end configured to be detachably attached to the sprocket support body of the rear hub assembly in the mounting state, and
a second axial end opposite to the first axial end in an axial direction with respect to the rotational center axis; and
a second lock member including:
a third axial end configured to be attached to the second axial end of the first lock member in an assembled state where the first sprocket and the lock device are assembled as one unit; and
a fourth axial end opposite to the third axial end in the axial direction and having at least one radial projection configured to abut against the first sprocket in the axial direction in the mounting state, and
the lock device being configured so that the first sprocket is slidable relative to the lock device in the axial direction in the assembled state and before the mounting state.