Brush lead guide for a brush holder assembly

Patent metadata

Field	Value
Publication number	US-9917408-B2
Application number	US-201514872838-A
Country	US
Kind code	B2
Filing date	Oct 1, 2015
Priority date	Mar 14, 2012
Publication date	Mar 13, 2018
Grant date	Mar 13, 2018

Abstract

A brush lead guide for a brush holder assembly configured to retain the leads extending from a brush in a desired position/orientation to ensure the leads do not interfere with movement of the brush within the brush holder. In some instances, the lead guide includes a first guide rail including a channel for receiving a first lead of the brush and a second guide rail including a channel for receiving a second lead from the brush. The lead guide maintains the leads in a position such that the leads are held within the width of the opening of the brush holder to ensure the leads do not interfere with movement of the brush within the brush holder during use of the brush holder assembly.

First claim

What is claimed is:

1. A brush holder assembly for an electrical device, the brush holder assembly comprising:
a brush holder;
a brush positionable in the brush holder, the brush including at least one lead fixed to and extending from an upper surface of the brush, such that the at least one lead extends through an upper opening of the brush holder;
a lead guide configured to prevent the at least one lead from contacting an upper edge of the brush holder and restricting free movement of the brush in the brush holder throughout an intended wear length of the brush; and
a spring including a coiled portion positioned over the upper surface of the brush when the brush is positioned in the brush holder, the spring being configured to exert a force against the brush in the brush holder;
wherein the lead guide is configured to travel with the brush relative to the brush holder as the brush diminishes in length during use;
wherein at least a portion of the coiled portion of the spring is positioned over at least a portion of the lead guide.

2. The brush holder assembly of claim 1 , wherein the lead guide is configured to support the at least one lead at a position over the upper surface of the brush.

3. The brush holder assembly of claim 1 , wherein the lead guide is configured to prevent direct contact between the at least one lead and the spring.

4. The brush holder assembly of claim 1 , wherein the at least one lead includes a first lead and a second lead, the first lead and the second lead being secured together at a position above the upper surface of the brush.

5. The brush holder assembly of claim 4 , wherein the first lead and the second lead are secured together adjacent an upper end of the lead guide.

6. The brush holder assembly of claim 4 , wherein the lead guide is configured to maintain the first lead and the second lead generally parallel to each other as the first lead and the second lead extend away from the upper surface of the brush.

7. The brush holder assembly of claim 1 , wherein at least a portion of the lead guide is configured to extend around a majority of a circumference of the at least one lead.

8. The brush holder assembly of claim 1 , wherein a lower end of the lead guide is positionable against the upper surface of the brush.

9. The brush holder assembly of claim 1 , wherein the lead guide is removable from the brush while the at least one lead remains fixed to the brush.

10. A brush holder assembly for an electrical device, the brush holder assembly comprising:
a brush holder;
a brush positionable in the brush holder, the brush including at least one lead fixed to and extending from an upper surface of the brush, such that the at least one lead extends through an upper opening of the brush holder;
a lead guide configured to prevent the at least one lead from contacting an upper edge of the brush holder and restricting free movement of the brush in the brush holder throughout an intended wear length of the brush; and
a spring including a coiled portion positioned over the upper surface of the brush when the brush is positioned in the brush holder, the spring being configured to exert a force against the brush in the brush holder;
wherein the lead guide is configured to travel with the brush relative to the brush holder as the brush diminishes in length during use;
wherein a portion of the lead guide is positioned between the upper surface of the brush and the coiled portion of the spring.

11. The brush holder assembly of claim 10 , wherein the lead guide is configured to extend around a majority of a circumference of the at least one lead.

12. The brush holder assembly of claim 10 , wherein the lead guide is configured to support the at least one lead at a position over the upper surface of the brush.

13. The brush holder assembly of claim 10 , wherein the at least one lead includes a first lead and a second lead, the first lead and the second lead being secured together at a position above the upper surface of the brush.

14. The brush holder assembly of claim 13 , wherein the first lead and the second lead are secured together adjacent an upper end of the lead guide.

15. The brush holder assembly of claim 13 , wherein the lead guide is configured to maintain the first lead and the second lead generally parallel to each other as the first lead and the second lead extend away from the upper surface of the brush.

16. The brush holder assembly of claim 10 , wherein the lead guide is removable from the brush while the at least one lead remains fixed to the brush.

17. A brush holder assembly for an electrical device, the brush holder assembly comprising:
a brush holder;
a brush positionable in the brush holder, the brush including at least one lead fixed to and extending from an upper surface of the brush, such that the at least one lead extends through an upper opening of the brush holder;
a lead guide configured to prevent the at least one lead from contacting an upper edge of the brush holder and restricting free movement of the brush in the brush holder throughout an intended wear length of the brush; and
a spring including a coiled portion positioned over the upper surface of the brush when the brush is positioned in the brush holder, the spring being configured to exert a force against the brush in the brush holder;
wherein the lead guide is positionable adjacent the upper surface of the brush and configured to travel with the brush relative to the brush holder as the brush diminishes in length during use;
wherein the lead guide is removable from the brush while the at least one lead remains fixed to the brush.

18. The brush holder assembly of claim 17 , wherein the lead guide is configured to extend around a majority of a circumference of the at least one lead.

19. The brush holder assembly of claim 17 , wherein the lead guide is configured to support the at least one lead at a position over the upper surface of the brush.

20. The brush holder assembly of claim 17 , wherein the at least one lead includes a first lead and a second lead, the first lead and the second lead being secured together at a position above the upper surface of the brush.

Assignees

• Cutsforth Inc

Inventors

• Cutsforth Robert S

Classifications

• H01R39/41 Primary

  cartridge type · CPC title

• H01R39/36

  Connections of cable or wire to brush · CPC title

• H01R39/40 Primary

  enabling brush movement within holder during current collection · CPC title