Optical pulse generator for an electric-motor drive arrangement

Details Optical pulse generator for an electric-motor drive arrangement Optical pulse generator for an electric-motor drive arrangement

1988-09-29

1990-06-19

Salce, Patrick R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 68R, 310 83, H02K 1100, H02K 710

Patent

active

049356526

ABSTRACT:
An optical pulse generator for an electric-motor drive arrangement, especially for a motor vehicle window lifting drive with an electric motor and a flanged transmission is to be provided in a simple manner which improves the operating reliability of the drive arrangement while the overall size is reduced. To this end it is proposed, according to the invention, to arrange a code wheel (1) within the electric-motor drive arrangement on the rotor shift (4) of the electric motor or on a transmission output gear (5) within the flanged transmission. A protective encapsulation is achieved while the code wheel (1) is arranged on the rotor shaft (4) by a protective housing (3) supported on the code wheel (1). Alternatively, the code wheel is arranged on the transmission output gear (5), by a protective housing formed by transmission housing wall (201), the transmission output gear (5) itself. Sealing rings (8) arranged adjacent to the code wheel.

REFERENCES:
patent: 3570116 (1971-03-01), Armstrong
patent: 3916278 (1975-10-01), Currell
patent: 3995156 (1976-11-01), Angerbach
patent: 4314692 (1982-02-01), Brauer
IBM Technical Disclosure Bulletin, Band 22, Nr. 8A, Jan. 1980, Seiten 3091-3092, New York, U.S.; D. J. Justus: "Prevention of Contamination in an Optical Tachometer".
Patent Abstracts of Japan, Band 10, Nr. 16 (E-375) [2073] Jan. 22, 1986; & JP-A-60 176 439 (Matsushita Denki Sangyo K.K.) 10.09.1985 *Zusammenfassung*.
Patent Abstracts of Japan, Band 11, Nr. 77 (E-487) [2524] Mar. 7, 1987; & JP-A-61 231 851 (Mitsubishi Electric Corp.) 16.10.1986 *Zusammenfassung*.

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