Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1995-05-23
1997-03-25
Stephan, Steven L.
Electrical generator or motor structure
Dynamoelectric
Rotary
310 42, H02K 1100
Patent
active
056147767
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to a device for the connection of a miniature electric motor with at least two electric conductor tracks of a printed-circuit board, particularly with regard to the housing of a central locking device of an automotive vehicle, the miniature motor presenting one socket per conductor track end to be inserted.
BACKGROUND OF THE INVENTION
Today miniature motors are applied in connection with different servo devices. In the automobile industry there are many applications of such servo devices, e.g. for opening and closing the windows or also for actuating a central locking device. The miniature motor or even several miniature motors have to be connected in the designated way with conductor tracks of a printed-circuit board or the like.
Originally, each motor was provided with a cable connection and the cable was connected with the conductor tracks of the printed-circuit board by plugging or soldering it. Attempts have also been made to connect contact sheets of the motor with flat plugs. These connections are expensive and time consuming since they have to be realized manually. Furthermore it is often undesirable to lay cables in the housing of the device because the cable can hinder the motion of the moving components. This applies especially when the device provided with one or more motors is exposed to vibrations, as is always the case in automobiles.
In another known version, such miniature motors are provided with slide connectors which protrude from the motor like the contact sheets do. These slide connectors are pushed into the openings of the conductor tracks and soldered directly to them. Although in this case no cable is involved, the miniature motors must have a precisely defined position in relation to the printed-circuit board or the conductor tracks in question. This defined position often does not correspond to the desired mounting position of the motor. This is especially true when the motor is not provided with a circular, but an oval or similar non circular housing. Furthermore the layout of the conductor tracks depends on the conformation of the motor. Modifications of the motor generally leads to a corresponding modification of the conductor tracks. This is time consuming and usually also very expensive.
The object of the present invention is therefore to develop the device mentioned at the beginning in such a way, that the motor can be mounted simply and quickly despite the absence of a cable connection and that small modifications of the motor do not involve any or at least any important adaptation to the connection of the printed-circuit board.
This object is achieved according to the present invention by putting the adapter between the end pieces of the conductor tracks and sockets of the motor. This arrangement provides for an electrically conductive connection between the motor and the conductor tracks and permits the quick adaptation to a slightly modified motor and/or modified end pieces of the conductor tracks. In addition to this, the connection of the motor with the adapter as well as the connection of the adapter with the end pieces of the conductor tracks is pluggable, so that cables are no longer necessary. The respective plug-in connections can be designed as already known. Therefore the miniature motor, e.g. coupled with the adapter, can be connected easily, quickly and safely with the end pieces of the conductor tracks, or in the specific case, with the central locking device, all prerequisites for an automatic assembly being given.
In another improvement of the present invention, the ends of the electrically conductive elements close to the motor are formed as plug pins which are retained in the sockets of the miniature motor in a clamped way. In this case the sockets have a flat plug-in opening in which the electrically conductive elements are plugged in an elastically clamped manner.
In another aspect of the present invention, the lateral distance of the ends of the electrically conductive elements close to the motor corre
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patent: 5063320 (1991-11-01), Watanabe et al.
patent: 5118300 (1992-06-01), Zarreii
patent: 5287028 (1994-02-01), Suzuki et al.
International Search Report for Application PCT/EP93/01844 filed Jul. 14, 1993.
ITT Automotive Europe GmbH
Lewis J. Gordon
Link Jonathan
Stephan Steven L.
Twomey Thomas N.
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