US 5,495,657 AGranted

Method for producing a commutator motor

AssigneeSiemens Aktiengesellschaft

InventorsPius Zeisner, Peter Adam

Life of this patent

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Abstract

In the case of assembly after the insertion of the rotor (4-7) with the commutator (4) into the motor housing (8), in order to be able to install the brush holder (1), with its brushes (1.1; 1.2) which are subject to radial spring pressure, simply and in a manner which can be carried out by an automated machine it is proposed that: the brush holder (1) is pushed onto one end part (2.1) of an installation mandrel (2) which is in the form of a sleeve and whose other end (2.3) is placed on the commutator (4), together with an integrated restraining part (3) which holds the brushes (1.1; 1.2) in a raised installation position; and that the restraining part (3) is fixed outside the motor housing (8) by means of a conical expansion of one end part (2.1). The brush holder (1) is then moved into its final position with the brushes (1.1; 1.2) which now slide on the installation mandrel (2 ). The brushes (1.1; 1.2) are pressed radially onto the commutator (4) during the withdrawal of the installation mandrel (2).

Claims12

Dependent claims

A method for producing a commutator motor having a brush holder, on the stator side, in which brushes are guided and are pressed against a commutator such that they make contact, having the following method steps:

(a) the brushes are initially locked, by means of a restraining part, in a radially raised installed position;
(b) the restraining part is held in a preinstalled manner in the brush holder;
(c) before being installed on the stator side, the brush holder is placed onto one end part of an installation mandrel, the brushes remaining in an installed position, by resting on the circumferential surface of the installation mandrel, as a result of axial displacement of the restraining part;
(d) the installation mandrel is moved such that its other end part, which corresponds at least to the external diameter of the commutator, is in a coaxial position with respect to the commutator, and the brush holder with the brushes is subsequently moved, by further axial displacement along the installation mandrel, into its axial end position, in terms of operation, relative to the commutator;
(e) the installation mandrel is removed by axial withdrawal, the brushes sliding radially onto the commutator.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 08/278,305Filed 21 Jul 1994
Priority: EP 941054748 Apr 1994
Granted: 5 Mar 1996
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

H02K 5/148
For cooperation with commutators: slidably supported brushes
H02K 15/00
Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of
H02K 2205/06
Specific aspects not provided for in the other groups of this subclass relating to casings, enclosures, supports: machines characterised by means…
Y10T 29/49011
Dynamoelectric machine: commutator or slip ring assembly