Electrical generator or motor structure – Dynamoelectric – Rotary
Reexamination Certificate
1999-10-14
2001-06-19
Ramirez, Nestor (Department: 2834)
Electrical generator or motor structure
Dynamoelectric
Rotary
C310S06700R, C310S06800R, C439S076100
Reexamination Certificate
active
06249068
ABSTRACT:
The following disclosure is based on European Application No. 98119399.8, filed on Oct. 14, 1998, the disclosure of which is incorporated into this application by reference.
FIELD OF AND BACKGROUND OF THE INVENTION
The invention relates to new and useful improvements to a motor connecting plug, in particular for a variable-speed commutator motor. Plug connectors of this type are required for actuating drives in motor vehicles, in particular between power-supply, regulation and control components located inside the motor and an electrical supply, regulation or control unit provided outside the motor. Such electrical supply/regulation/control units are preferably accommodated in an electronics housing which is separate from the motor casing. With regard to the motor itself, commutator motors powered by the vehicle's on board DC system and coupled to downstream gearboxes are preferably used as the electric motors.
German Laid-Open Publication DE 40 19 787 A1 discloses a window winder driven by an electric motor. The drive unit of the window winder is arranged together with a speed sensor and a control and regulation electronics unit connected to it in a common, moistureproof housing. A circuit board embracing the control and regulation electronics unit is plugged into the casing, radially with respect to the motor axis through an opening in the casing. As a result, the circuit board both makes electrical contact with plug contacts on the drive unit and is positioned such that a speed sensor provided thereon is brought close to a speed encoder mounted on the rotor side of the motor. The circuit board is arranged in the common casing essentially parallel to the motor axis.
European Patent Application EP 0 538 495 B1 discloses another commutator motor/gearbox/drive unit which has an electronic housing plugged onto the gearbox housing and extending parallel to the motor casing. When the gearbox housing and the electronics housing are mechanically connected together, a circuit board, which is supported in this housing and contains the control and supply electronics unit, makes electrical contact with motor connections on a brush mounting plate in the commutator motor.
OBJECTS OF THE INVENTION
According to one object of the invention it is sought to provide an operationally reliable electrical contact-making connection between terminals inside and terminals outside the motor. Moreover, the connections should be simple and effective in terms of both manufacture and assembly. In particular, it is sought to provide such a connection between a brush mounting plate inside the motor and a supply and control unit fashioned on a circuit board outside the motor.
SUMMARY OF THE INVENTION
According to one formulation, the present invention is directed to an electric motor arrangement that includes an electric motor housed in a motor casing; and a motor connecting plug. The motor connecting plug includes an insulation body projecting from outside the motor casing into an interior space of the motor casing; and power contact tracks held by the insulation body and extending between first electrical power connections, located in the interior of the motor casing, and second electrical power connections, located outside the motor casing. The insulation body includes pocket-shaped, plug-in holders for receiving, guiding and mounting the power contact tracks.
The plug connector according to the invention allows its insulation body to be fitted easily and by industrial robots. It additionally promotes a high positioning accuracy, and thus fitting accuracy, of the contact tracks relative to their mating contacts when the final mutual installed state for operation is reached. According to preferred embodiments, the plug connector is also used for signal transmission, in particular for transmitting signals from a speed encoder inside the motor on the rotor side to a regulation or control unit outside the casing. In such a case, according to one refinement of the invention, signal contact tracks are integrated into the insulation body, preferably before the power contact tracks are fitted. In particular, the signal contact tracks are molded into the plastic insulation body, as inserts, in an injection-molding die. The signal contact tracks advantageously make contact with at least one speed sensor, which is fixed on the end piece of the insulation body inside the motor and is associated with the speed encoder.
REFERENCES:
patent: 4616149 (1986-10-01), Best
patent: 5528093 (1996-06-01), Adam et al.
patent: 5614776 (1997-03-01), Baumeister
patent: 5633542 (1997-05-01), Yuhi et al.
patent: 5984695 (1999-11-01), Riehl et al.
patent: 6011341 (2000-01-01), Toya et al.
patent: 4019787 A1 (1991-01-01), None
patent: 0538495 A1 (1993-04-01), None
patent: 2691024 (1993-11-01), None
patent: 01319115 (1989-07-01), None
Lam Thanh
Ramirez Nestor
Siemens Aktiengesellschaft
Sughrue Mion Zinn Macpeak & Seas, PLLC
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