Electric power generator for human-powered vehicle

Patent metadata

Field	Value
Publication number	US-2022410999-A1
Application number	US-202117360202-A
Country	US
Kind code	A1
Filing date	Jun 28, 2021
Priority date	Jun 28, 2021
Publication date	Dec 29, 2022
Grant date	—

Abstract

An electric power generator is provided for a human-powered vehicle. The electric power generator includes an axle, a stator, a rotor and a first electrical cable. The axle has a first axial end, and a second axial end. The stator has a first axial stator-end that faces the first axial end of the axle with respect to the rotational center axis and a second axial stator-end that faces the second axial end of the axle with respect to the rotational center axis. The rotor is rotatably mounted on the axle to rotate around a rotational center axis of the electric power generator. The first electrical cable is electrically connected to the stator on the first axial stator-end of the stator. The first electrical cable extends axially through the stator toward the second axial stator-end of the stator with respect to the rotational center axis.

First claim

What is claimed is:

1 . An electric power generator for a human-powered vehicle, the electric power generator comprising:
an axle having a first axial end, and a second axial end; a stator having a first axial stator-end that faces the first axial end of the axle with respect to the rotational center axis and a second axial stator-end that faces the second axial end of the axle with respect to the rotational center axis; a rotor rotatably mounted on the axle to rotate around a rotational center axis of the electric power generator; and a first electrical cable electrically connected to the stator on the first axial stator-end of the stator, the first electrical cable extending axially through the stator toward the second axial stator-end of the stator with respect to the rotational center axis.

2 . The electric power generator according to claim 1 , wherein
the rotor includes at least one magnet.

3 . The electric power generator according to claim 1 , wherein
the stator includes an armature disposed on the axle, and the first electrical cable extends axially through the armature.

4 . The electric power generator according to claim 3 , wherein
the armature includes a winding coil and a bobbin, and the first electrical cable extends axially through the armature at a point that is radially outward of the winding coil.

5 . The electric power generator according to claim 1 , further comprising
an electric circuit board, wherein the first electrical cable is electrically connected to the electric circuit board.

6 . The electric power generator according to claim 5 , wherein
the electric circuit board is disposed adjacent the stator at the second axial stator-end of the stator in the axial direction with respect to the rotational center axis.

7 . The electric power generator according to claim 5 , wherein
the electric circuit board is disposed perpendicular to the rotational center axis, the electric circuit board has a first axially facing surface facing the stator and a second axially facing surface facing away from the stator.

8 . The electric power generator according to claim 7 , wherein
the first electrical cable is electrically connected to the second axially facing surface of the electric circuit board.

9 . The electric power generator according to claim 5 , further comprising
a housing in which the electric circuit board is disposed.

10 . The electric power generator according to claim 9 , wherein
the housing is disposed adjacent to the stator at the second axial stator-end of the stator in the axial direction with respect to the rotational center axis.

11 . The electric power generator according to claim 9 , wherein
the housing has a first surface facing the second axial stator-end of the stator, and the first electrical cable extends from the first surface towards the stator.

12 . A hub assembly comprising the electric power generator according to claim 5 , and further comprising
a hub body rotatably mounted on the axle to rotate around a rotational center axis of the electric power generator.

13 . The hub assembly according to claim 12 , further comprising
a second electrical cable electrically connected to the electric circuit board and extending out from the hub body.

14 . The hub assembly according to claim 12 , further comprising
at least one capacitor electrically connected to the electric circuit board.

15 . The hub assembly according to claim 12 , further comprising
a sprocket support structure rotatably disposed around the rotational center axis to transmit a driving force to the hub body while rotating in a driving rotational direction around the rotational center axis.

16 . The hub assembly according to claim 15 , further comprising
a detected part coupled to the sprocket support structure, and a rotation detection sensor being configured to detect the detected part to detect rotation of the sprocket support structure around the rotational center axis.

17 . The hub assembly according to claim 16 , wherein
the rotation detection sensor is disposed in the hub body.

Assignees

• Shimano Kk

Inventors

• Yamazaki Azusa
• Inoue Kenkichi
• Yoneda Yuuya

Classifications

• H02K21/24

  with magnets axially facing the armatures, e.g. hub-type cycle dynamos · CPC title

• B62J6/12 Primary

  Dynamos arranged in the wheel hub · CPC title

• H02K21/227

  having an annular armature coil · CPC title

• H02K5/225

  Terminal boxes or connection arrangements (specially adapted for submersible motors H02K5/132) · CPC title

• H02K5/10

  with arrangements for protection from ingress, e.g. water or fingers · CPC title