Reduced size and light weight hub dynamo of bicycle
OwnerYng-Long Leeinventor
Life of this patent
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Abstract
A reduced size and light weight hub dynamo of bicycle is capable of increasing the power output when the bicycle runs at a relatively low speed. The hub dynamo of bicycle comprises a hub, at least two magnetic rotor sleeves, magnet isolation sleeves disposed among the magnetic sleeves, at least two coil stators, parting members disposed between the coil stators, a central shaft, two bearings and a locking assembly. Such arrangements increase the number of the power generating units consisting of magnetic rotor sleeve and coil stator. The N-S poles of neighboring magnetic rotor sleeves have a phase difference with respect to one another, or the teeth of the claw poles of the neighboring coil stator having a phase difference with respect to one another.
Claims6
A reduced size and light weight hub dynamo of bicycle comprises:
- a hub formed with a chamber;
- at least two magnetic rotor sleeves positioned against an inner periphery of the chamber of the hub and each consisting of a plurality of alternating N/S poles, the N/S poles of the neighboring magnetic rotor sleeves being arranged a phase difference with respect to one another;
- at least one magnet isolation sleeves disposed between the magnetic rotor sleeves;
- at least two coil stators mounted on a central shaft of the hub and located corresponding to the magnetic rotor sleeves, each coil stator including a coil and two claw poles, the claw poles being each provided with a plurality of teeth and mounted outside the coil in such a manner that the teeth are engaged with each other, and the number of the teeth corresponds to that of the poles of the magnetic rotor sleeves, the teeth of the claw poles of the neighboring coil stator having no phase difference with respect to one another;
- at least one parting members disposed between the coil stators and located corresponding to the magnet isolation sleeves;
- a bearings mounted at both ends of the chamber;
- and
- a locking assembly employed to lock the central shaft in the hub.
A reduced size and light weight hub dynamo of bicycle comprises:
- a hub formed with a chamber;
- at least two magnetic rotor sleeves positioned against an inner periphery of the chamber of the hub and each consisting of a plurality of alternating N/S poles, and the N/S poles of the neighboring magnetic rotor sleeves having no phase difference aligned with one another;
- at least one magnet isolation sleeves disposed between the magnetic rotor sleeves;
- at least two coil stators mounted on a central shaft of the hub and located corresponding to the magnetic rotor sleeves, each coil stator including a coil and two claw poles, the claw poles being each provided with a plurality of teeth and mounted outside the coil in such a manner that the teeth are engaged with each other, and the numbers of the teeth corresponds to that of the poles of the magnetic rotor sleeves, the teeth of the corresponding claw poles of the neighboring coil stator being arranged a phase difference with respect to one another;
- at least one parting members disposed between the coil stators and located corresponding to the magnet isolation sleeves;
- a bearings mounted at both ends of the chamber;
- and
- a locking assembly employed to lock the central shaft in the hub.
Dependencies are inferred from the claim text.