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Disc blank for producing commutator laminations

A technology for commutator segments and blanks, which is applied in the field of contact materials and can solve the problems of increased wear and adverse effects of carbon brushes and commutator segments.

Inactive Publication Date: 2018-04-17
SCHUNK CARBON TECH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In known disk commutators or rather in commutator segments made from disk-shaped blanks, due to the previously described structure of the disk-shaped blanks, the contact material used to form the connecting portion acts as The contact layer extends across the entire surface of the carbon matrix, so that copper particles released by the cutting or sawing process accumulate at the cut edges formed by the separation, which copper particles can cause a gap between the carbon brushes and the commutator segments during operation. increased wear between the parts and adverse effects on substances in the fuel

Method used

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  • Disc blank for producing commutator laminations
  • Disc blank for producing commutator laminations
  • Disc blank for producing commutator laminations

Examples

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Embodiment Construction

[0029] figure 1 Shown is a disc commutator 10 with a carrier body 11 made of non-conductive plastic and comprising, in the example of the embodiment shown, eight commutator segments 12 each arranged On the carrier body 11 such that the running surface parts 13 of the commutator segments 12 and their contact surfaces 14 are arranged in a shared contact plane 15 of the disk commutator 10 and can be connected in this contact plane 15 with the not shown here carbon brush contacts.

[0030] as from Figure 4 As can be seen in , which shows the commutator segments in a bottom view, the commutator segments 12 each comprise a contact body 16 on the underside of the running surface part 13 which forms the connection of the commutator segments 12 part and with figure 1 The shown hook-shaped outer contacts 17 are in contact, respectively for contacting or receiving the windings of the electric motor.

[0031] exist figure 2 and image 3 , a disc-shaped blank 18 is shown for manufa...

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Abstract

The invention relates to a disc blank (18) for producing commutator laminations of a disc commutator and also to a commutator lamination and to a disc commutator formed with such commutator laminations, wherein the disc blank (18) is formed as a multi-layer body and has a shaped carbon body with a continuous first layer and with a contact arrangement which forms a second layer interrupted by transition regions in such a way that the transition regions do not have any contact material.

Description

technical field [0001] The invention relates to a disk-shaped blank for manufacturing commutator segments of a disc commutator, which comprises a carbon mold body made of carbon material and used to form the running surface part of the commutator segment, made of carbon The contact arrangement formed and arranged on the carbon matrix, and the contact material comprising the contact metal and used to form the connecting portion of the commutator segments. Background technique [0002] Disc commutators are used in particular in fuel pumps for electric motor drives for fuel pumps, said disc commutators being assembled from commutator segments comprising copper-free running surface parts. By doing so, it is ensured that during operation of the fuel pump copper particles are not released due to wear of the commutator segments, which could otherwise cause galvanic corrosion processes between the carbon brushes of the fuel pump and the commutator segments . [0003] Typically, di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01R43/06H01R39/06H01R43/08H01R39/04
CPCF02M37/08H01R39/045H01R39/06H01R43/08H02K13/006
Inventor 马丁·毛雷尔弗洛里安·休伯
Owner SCHUNK CARBON TECH GMBH
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