Siemens Vdo Automotive Corporation

Siemens Automotive Corporation

Andrew Paul Smith

Peter A Kershaw

Martin Volkening

Andrew Lakerdas

Nicholas J Glowacki

John Van Duynhoven

Scott Cole

A method of linking commutator bars of a commutator for a motor wherein N is the number of magnetic poles of the motor and N is an even integer greater than 2. The method include a) arranging a plurality of commutator bars to be generally equally spaced in a circular arrangement to define the commutator, each commutator bar having a tang extending therefrom, b) contacting an end of a continuous, insulated conductive member to a tang, c) moving the member to contact a second tang which is disposed at an angle of 720&deg;/N from the previously contacted tang to form a link, and when N is greater than four, repeating this step until N/2&minus;1 links are created, d) moving the member to contact a tang which is immediately adjacent to the second tang contacted in step (c) such that the member defines a bridging portion between the adjacent tangs, e) repeating steps (c) and (d) and until all tangs have been contacted by the member, and f) cutting the bridging portion between adjacent tangs.

Method of connecting commutator bars in a cross-linked commutator having additional parallel paths

A choke for suppressing radio-frequency interference of a brush-type motor, includes a single wire having a portion wound about a coil axis A to define a plurality of coils including two outermost coils and An attaching structure extends from each outermost coil and is disposed generally transverse with respect to the coil axis. Each attaching structure is constructed and arranged to be inserted through an associated opening in a supporting structure and to be bent so as secure the choke to the supporting structure. An elongated end portion extends from each attaching structure so as to be spaced from and generally parallel to the coil axis. The elongated end portions extend in opposite directions. One of the elongated end portions is constructed and arranged to be directly electrically connected to an electrical connector of a motor and the other of the elongated end portions is constructed and arranged to be in electrical connection with a brush of the motor.

Radio-frequency interference suppressing choke with elongated portions for brush-type motors

A choke , for suppressing radio-frequency interference of a brush-type motor, includes a single wire having a portion wound about a coil axis A to define a plurality of coils including two outermost coils and . An attaching structure extends from each outermost coil and is disposed generally transverse with respect to the coil axis. Each attaching structure is constructed and arranged to be inserted through an associated opening in a supporting structure and to be bent so as secure the choke to the supporting structure. An elongated end portion extends from each attaching structure so as to be spaced from and generally parallel to the coil axis. The elongated end portions extend in opposite directions. One of the elongated end portions is constructed and arranged to be directly electrically connected to an electrical connector of a motor and the other of the elongated end portions is constructed and arranged to be in electrical connection with a brush of the motor.

DC motor brush card assembly having attaching structures and multiple choke coils with elongated portions

A motor speed control system includes a permanent magnet direct current electric motor A first switch is operatively associated with the motor. A resistive element is provided in series with the motor and the first switch. A second, pulse width modulated controlled, switch is operatively associated with the motor. A controller is operatively associated with the first and second switches for controlling the first and second switches independently and in combination to control current to the motor to operate the motor at various speeds.

Combination of resistor and PWM electronic device to control speed of a permanent magnet DC motor

A motor speed control system includes a permanent magnet direct current electric motor A first switch is in series with the motor. A circuit is in series with the first switch The circuit includes a resistor and a second, pulse width modulated controlled, switch in parallel with the resistor An electronic controller is operatively associated with the first and second switches for electronically controlling the first and second switches independently and in combination to control current to the motor to operate the motor at various speeds.

A motor and fan structure includes direct current motor assembly having a stator assembly including a flux plate and permanent magnet structure mounted on the flux plate . The flux plate defines one end of the motor assembly and define a magnetic flux path of the motor assembly. The motor assembly also includes a generally cylindrical armature assembly defining another end of the motor assembly. The armature assembly is radially wound with windings , and an outermost part of the armature assembly and at least a portion of the windings is exposed to the environment. The structure includes a fan having a generally cylindrical hub receiving and covering the outermost part and the portion of the windings of the armature assembly. The hub has a plurality of blades extending therefrom. Thus, the weight and axial length of the motor assembly can be reduced since no case is required to cover the armature assembly yet the armature assembly is protected by the fan hub.

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London, Canada

Andrew Paul Smith