BICYCLE GENERATOR

• Main Authors: PUGA EVS VLADISLAVS, BEZRUKOVS VAL RIJS, LEVINS NIKOLAJS
• Format: Patent
• Language: English; Latvian
• Published: 20.07.2009
• Subjects: ACCESSORIES PECULIAR TO CYCLES AND NOT OTHERWISE PROVIDED FOR,e.g. ARTICLE CARRIERS, CYCLE PROTECTORS; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; CYCLE SADDLES OR SEATS; DYNAMO-ELECTRIC MACHINES; ELECTRICITY; GENERATION; LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS; PERFORMING OPERATIONS; TRANSPORTING

The present invention relates to AC electrical machines with a rotary flux-switching member, a stationary armature, and a magnet. The object of the present invention is to provide a bicycle generator of a simplified structure, with reduced manufacture expenses and improved reliability. The bicycle generator according to the present invention (Fig.1) comprises a permanent magnet 1 and an armature with a stationary stacked magnet core, around which a ring winding 2 is wound, the generator having an additional permanent magnet 3 and a rotary flux-switching member 4 with axially directed teeth 5 and 6 located on the both sides thereof with a pitch tau. The teeth 5 located on one side of the flux-switching member 4 are shifted relative to the teeth 6 located on its other side at tau/2. The armature magnet core comprises two packages 7, 8 having a length l, their neighbouring end-faces 9, 10, 11, 12 being relatively shifted at tau/2. The packages 7 and 8 of the magnetic flux path of the armature transversely surround the magnetic flux path of the flux-switching member 4. The end-faces 9 and 10 of the packages 7 and 8 are located opposite to the teeth 5, and the end-faces 11 and 12 are located opposite to the teeth 6. The end-faces 9, 10, 11 and 12 are spaced from the corresponding teeth 5 and 6 at an air-gap clearance delta. The permanent magnets 1 and 3 are placed between the packages 7 and 8 at the both sides of the ring winding 2 so that the N-poles of the magnets 1 and 3 are connected to the package 7 and the S-poles thereof are connected with the package 8. The packages 7 and 8 and winding 2 are intended to be attached to the bicycle frame, while the flux-switching member 4 is intended to be installed on a rotary wheel hub of the bicycle. Izgudrojums attiecas uz maiņstrāvas elektromašīnām ar rotējošu magnētiskās plūsmas sadalītāju ar nekustīgu enkuru un magnētu. Izgudrojuma mērķis ir konstrukcijas vienkāršošana, izgatavošanas tehnoloģijas palētināšana un ģeneratora konstrukcijas drošuma palielināšana. Ģenerators (fig.1) satur pastāvīgo magnētu 1 un enkuru ar nekustīgu šihtētu magnētvadu, ko aptver gredzenveida tinums 2, papildu pastāvīgo magnētu 3 un magnētiskās plūsmas pārslēdzēju 4, kuram zobi 5 un 6 uz magnētvada ir izvietoti aksiālajā virzienā abās pusēs un tiem ir solis, kas vienāds ar τ. Zobi 5 vienā magnētvada pusē ir nobīdīti attiecībā pret zobiem 6 otrā pusē par τ/2. Enkura magnētvads ir izveidots no divām paketēm 7un 8 ar garumu l, kurām blakusesošie gali 9, 10 un 11, 12 ir nobīdīti viens attiecībā pret otru par τ/2. Enkura magnētvada paketes 7 un 8 šķērsvirzienā aptver magnētiskās plūsmas pārslēdzēja magnētvadu 4, pie tam enkura magnētvada pakešu 7, 8 gali 9, 10 atrodas pretī magnētiskās plūsmas pārslēdzēja magnētvada 4 zobiem 5, bet gali 11 un 12 - pretī zobiem 6 un ir atdalīti