WIPO logo
Mobile | Deutsch | Español | Français | 日本語 | 한국어 | Português | Русский | 中文 | العربية |
PATENTSCOPE

Search International and National Patent Collections
World Intellectual Property Organization
Search
 
Browse
 
Translate
 
Options
 
News
 
Login
 
Help
 
Machine translation
1. (WO1981000331) SMALL A.C.MOTOR WITH PERMANENT MAGNET ROTOR HAVING A RECIPROCATING MOTION
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1981/000331    International Application No.:    PCT/CH1980/000083
Publication Date: 05.02.1981 International Filing Date: 08.07.1980
IPC:
A61C 17/34 (2006.01), H02K 33/06 (2006.01)
Applicants:
Inventors:
Priority Data:
6449/79 11.07.1979 CH
Title (EN) SMALL A.C.MOTOR WITH PERMANENT MAGNET ROTOR HAVING A RECIPROCATING MOTION
(FR) PETIT MOTEUR A COURANT ALTERNATIF AVEC ROTOR A AIMANT PERMANENT A MOUVEMENT ALTERNATIF
Abstract: front page image
(EN)The small A.C. motor, particularly provided for driving, with an oscillating motion, a tooth brush secured to the rotor shaft, comprises a rotor formed by a cylindrical permanent magnet (4) diametrically magnetized, a fixed coil surrounding with a play the rotor longitudinally and having turns of general rectangular shape, and a tubular stator envelope (1) with rectangular cross-section surrounding the coil, of which the outer periphery is adapted to the envelope. The coil is comprised of two identical parts (2, 3); its axis orientated perpendicularly to the rotor axis and the planes of the turns thereof extend parallel to the lateral major faces of the stator envelope (1). Both parts of the coil (2, 3) are provided with faces oriented parallel to the planes of their turns and which are applied one against the other in a plane passing by the rotor axis, and their edges extending diametrically with respect to the rotor are provided in the middle part thereof with recesses (2a, 2b, 3a, 3b) of semi-circular shape for the passage of the rotor shaft (5). In alternative embodiments, the stator envelope may also be square, octogonal or cylindrical, the outer periphery of the coil being each time adapted to the inner shape of the stator. In the case of a cylindrical stator, there may be provided projecting stator polar pieces arranged facing each other along the periphery of the stator.
(FR)Le petit moteur a courant alternatif, qui est notamment prevu pour entrainer, suivant un mouvement oscillant, une brosse a dent fixee a l"arbre du rotor, comprend un rotor forme par un aimant permanent (4) cylindrique magnetise diametralement, une bobine fixe entourant avec jeu le rotor sur toute sa longueur et presentant des spires de forme generale rectangulaire, et une enveloppe statorique (1) tubulaire de section transversale rectangulaire entourant la bobine, dont la peripherie exterieure est adaptee a l"enveloppe. La bobine est constituee par deux parties (2, 3) identiques; son axe est oriente perpendiculairement a l"axe du rotor et les plans de ses spires s"etendent parallelement aux grandes faces laterales de l"enveloppe statorique (1). Les deux parties de bobine (2, 3) presentent des faces orientees parallelement aux plans de leurs spires et qui sont appliquees l"une contre l"autre dans un plan passant par l"axe du rotor, et leurs bords s"etendant diametralement par rapport au rotor presentent en leur milieu des evidements (2a, 2b, 3a, 3b) de forme semicirculaire pour le passage de l"arbre rotorique (5). Dans des variantes, l"enveloppe statorique peut aussi etre carree, octogonale ou cylindrique, la peripherie exterieure de la bobine etant chaque fois adaptee a la forme interieure du stator. Dans le cas d"un stator cylindrique, il peut etre prevu des pieces polaires statoriques saillantes disposees en regard les unes des autres le long de la peripherie du stator.
Designated States:
Publication Language: German (DE)
Filing Language: German (DE)