Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1991-09-09
1994-05-24
Stephan, Steven L.
Electrical generator or motor structure
Dynamoelectric
Rotary
310 64, 310 89, 49337, H02K 1100, H02K 504, H02K 922, E05F 1140
Patent
active
053151941
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to an actuator device for an electric window winder, and in particular to such a device of the type in which a DC electric motor drives an element constituted by a pre-compressed screw, in a known way by means of a recirculating ball worm screw unit, to actuate the displacement of the window.
BACKGROUND ART
As is known, currently for drive and control of such actuator devices conveniently fitted on vehicles, in particular motor vehicles, use is currently made in practice of a wiring system with wires dedicated to the electrical supply of the motor, which lead from a common central control unit for various actuator devices, which include relay units, limiter circuits etc. This wiring system involves various disadvantages, including: the complexity and difficulty of positioning bundles of wires, the large number of electrical connections, the difficulty of identification in the case of failure, and the complexity of testing the operation of the installation during and/or after assembly on the vehicle. Therefore, there has been provided an actuator device, suitable for an electric window winder, comprising an electric motor for a window displacement actuator element, and including an electronic unit for drive and control of the electric motor, as shown in EP-A-0252481, so that the number of electric wires leading to the motor system can be reduced. In particular, the electronic unit is housed in a cover which is separate from the frame housing the electric motor, and which is then fixed by means of screws.
In this realization the frame must be produced in two pieces, which are then fixed together with a supplementary operation; there is not a good transmission of heat from the power components of the electronic unit to the frame of the actuator device, in fact between the cover and the frame housing the electric motor there is a gasket; and resin material is utilized covering the electronic unit to promoting the removal of heat from the power components in the cover.
DISCLOSURE OF INVENTION
It is an object of the present invention to provide an actuator device for an electric window winder, including an electronic unit for drive and control an electric motor of said device, designed to overcome the above drawbacks, i.e. which is very simple to produce and assemble, which has a good guarantee of functionality, and which is also suitable for a drive and control system of the type described in Italian Patent application entitled "A drive and Control System for a Plurality of Electrical Devices of a Vehicle", filed on the same date, corresponding to International Patent Application PCT/IT90/00023.
According to the present invention, there is provided an actuator device for an electric window winder, comprising an electric motor and a window displacement actuator element which is displaceable with respect to a frame of the device under the action of the said motor, and including an electronic unit for drive and control of the said electric motor, said electronic unit being housed in a portion of a frame of the said device, characterised by the fact that the said portion of the frame housing the said electronic unit is integral with the portion of the frame housing the said electric motor.
BRIEF DESCRIPTION OF DRAWINGS
For a better understanding of the present invention a particular embodiment thereof will now be described, purely by way of non-limitative example, with reference to the attached drawings, in which:
FIG. 1 is a partially sectioned side view of an electric window winder actuator device formed according to the principles of the present invention; and
FIG. 2 is a partially sectioned front view of the actuator device of FIG. 1 .
BEST MODE FOR CARRYING OUT THE INVENTION
With reference to FIG. 1, the reference numeral 101 generally indicates an actuator device for an electric window winder, which comprises, in a substantially known way, a main frame 102 in the form of a shaped container, conveniently made of aluminium, having a cylindrical portion
REFERENCES:
patent: 3660704 (1972-05-01), Paine et al.
patent: 4537565 (1985-08-01), Edler
patent: 4679451 (1987-07-01), Nakamura
patent: 4712030 (1987-12-01), Lakin et al.
patent: 4712441 (1987-12-01), Abraham
patent: 4865162 (1989-09-01), Morris et al.
patent: 4891735 (1990-01-01), Mikolajczak
patent: 4903535 (1990-02-01), Kikuta et al.
patent: 4964198 (1990-10-01), McCarthy
patent: 5006744 (1991-04-01), Archer et al.
Boero Giuseppe
Brusasco Enzo
LaBelle C.
Roltra-Morse S.p.A.
Stephan Steven L.
LandOfFree
Actuator device for an electric window winder does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Actuator device for an electric window winder, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Actuator device for an electric window winder will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1975129