Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1998-03-18
2000-04-18
Ramirez, Nestor
Electrical generator or motor structure
Dynamoelectric
Rotary
310 89, 310 75R, B60S 116
Patent
active
060518995
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention relates to a drive device, particularly for a windshield wiper apparatus, which consists of an electrical motor, a drive unit, and an electronic unit for the control of the motor. As a general rule, the motor is flange-mounted to the casing, and the electronic unit is constructed separately from the drive unit and connected to the motor or a parking positions switch in the drive unit by means of wires.
SUMMARY OF THE INVENTION
The invention relates to the object of creating a compact unit which is easy to mount. It is proposed that the drive unit and the electronic unit be provided in a casing, whereby the electrical motor is flange-mounted to this casing and the casing is provided with a plug casing, whereby the electrical connections between the plug in the plug casing, the electronics unit in the electrical motor, and a switch activated by the drive unit, are carried out by way of conducting strips which are positioned exclusively in the casing.
This apparatus leads to a compact construction unit. Moreover, it has the advantage that the electrical lines are placed exclusively in the casing, so that the danger of short circuits is minimized. It is in a position to produce the conductive strips of stamped grids, whereby at least one conducting strip of this stamped grid is provided with a cooling plate which is integrally formed in a single part, which can be placed against a metallic cover of the drive unit casing. This conducting strip is then preferably connected with the ground potential so that, if the drive unit casing itself consists of plastic, the cover is connected with the ground potential.
It is additionally recommended to also connect the metallic casing mantle of the flange-mounted electrical motor with the ground conducting strip.
Moreover, a bracket which is placed against the power transistor of the electronics unit and which stands in contact with the cover of the casing, can additionally be formed integrally with this ground conducting strip. In this manner, the metallic cover of the casing is not only placed to ground potential, but also serves, at the same time, for the dissipation of heat for the power transistor.
BRIEF DESCRIPTION OF THE DRAWINGS
The construction of a motor drive unit for the wiper apparatus of a motor vehicle is described in the following. As is evident from the description, the essential elements of this apparatus can also be used motor drive units which serve for other purposes of use.
The description is carried out in reference to the drawings, which depict the following drawings:
FIG. 1 depicts a motor drive unit without a drive cover, whereby the depiction is carried out, in part, in a view from above and, in part, in a cross-section;
FIG. 2 depicts a section along the line II--II of FIG. 1;
FIG. 3 depicts, in a view from above, the drive unit casing without cover unit, with a contact disk placed on the base of the casing;
FIG. 4 depicts a section along the line IV--IV of FIG. 3;
FIG. 5 depicts a view from the outside against the base of the drive unit casing, partially in a view from above and partially cut away, with an electronics unit inserted;
FIG. 6 depicts a view from above of the brush supporting plate of the electrical motor;
FIG. 7 depicts a section through the casing along the line VII--VII of FIG. 1;
FIG. 8 depicts a detail of FIG. 2;
FIGS. 9a and 9b depict the contact plate which is inserted into the casing;
FIG. 10 depicts one possibility for the attachment of the contact plate in the casing; and
FIG. 11 depicts individual details of the passage of water through the drive shaft.
DETAILED DESCRIPTION OF THE DRAWINGS
Reference will first be made to FIG. 1.
The unit consists of an electrical motor 1 as well as a drive unit 2. The electrical motor 1 is attached laterally to the casing of the drive unit 3. The drive unit involves a so-called "pendulum drive unit".
This consists of the following elements: The motor shaft 4 is extended and supports, on its extended end, a helical unit 5. This meshes wi
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Csermak Martin
Heuberger Christof
Walther Bernd
ITT Manufacturing Enterprises Inc.
Lewis J. Gordon
Mullins Burton
Ramirez Nestor
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