Brushless motor assembly

Patent metadata

Field	Value
Publication number	US-10411544-B2
Application number	US-201615283761-A
Country	US
Kind code	B2
Filing date	Oct 3, 2016
Priority date	Oct 3, 2016
Publication date	Sep 10, 2019
Grant date	Sep 10, 2019

Abstract

A brushless motor assembly includes a housing, a cover assembly, an insert, and a sensor assembly. The housing is disposed about a motor. The cover assembly is disposed on the housing and has a base and a connecting portion. The connecting portion defines a connecting region. The insert has a first insert surface and a second insert surface disposed opposite the first insert surface, each extending between a first insert end and a second insert end. The sensor assembly is disposed on the second insert surface.

First claim

Having thus described the invention, it is claimed:

1. A brushless motor assembly, comprising:
a housing disposed about a motor;
a cover assembly having:
a base operatively connected to the housing;
a connecting portion extending from the base, the connecting portion defining a connecting region;
an insert having a first insert surface and a second insert surface disposed opposite the first insert surface, each extending between a first insert end and a second insert end;
a sensor assembly disposed on the second insert surface;
a first connecting arm of the insert, the first connecting arm extending from the first insert surface; and
a tab defined by the first connecting arm, the tab configured to engage an inner surface of the connecting portion.

2. The brushless motor assembly of claim 1 , wherein the connecting portion defines a passageway within which the insert is at least partially received.

3. The brushless motor assembly of claim 1 , wherein the sensor assembly includes a position sensor that is disposed proximate the first insert end.

4. The brushless motor assembly of claim 3 , wherein the position sensor is aligned with a center of the motor.

5. A brushless motor assembly, comprising:
a cover assembly having a connecting portion configured as a wall having an outer surface and an inner surface extending from a base that is disposed on a housing towards a connecting region;
an insert having a first insert surface and a second insert surface each extending between a first insert end and a second insert end, a first connecting arm extending from the first insert surface towards the inner surface; and
a second connecting arm spaced apart from the first connecting arm and extending from the first insert surface towards the inner surface, the first connecting arm and the second connecting arm extending axially towards the second insert end.

6. The brushless motor assembly of claim 5 , further comprising a sensor assembly disposed on the second insert surface.

7. The brushless motor assembly of claim 5 , wherein a first connecting arm distal end and a second connecting arm distal end are spaced apart from the second insert surface.

8. The brushless motor assembly of claim 5 , wherein the first connecting arm, the first insert surface, and the inner surface define a first motor lead receiving region.

9. The brushless motor assembly of claim 8 , wherein the second connecting arm, the first insert surface, and the inner surface define a second motor lead receiving region.

10. The brushless motor assembly of claim 9 , wherein the insert has a first wall extending from the first insert surface towards the first connecting arm and extending axially towards the second insert end.

11. The brushless motor assembly of claim 10 , wherein the insert has a second wall that is spaced apart from the first wall and extending from the first insert surface towards the second connecting arm and extending axially towards the second insert end.

12. The brushless motor assembly of claim 11 , wherein the first wall, the second wall, and the inner surface define a third motor lead receiving region.

13. A brushless motor assembly, comprising:
a housing having an inner wall and an outer wall disposed about the inner wall, the inner wall being disposed about a shaft of a motor;
a cover assembly having a base disposed on the housing and a connecting portion having an outer surface and an inner surface extending away from the base, the inner surface defining a passageway; and
an insert at least partially received within the passageway, the insert having a first insert surface and a second insert surface extending between a first insert end and a second insert end, a first connecting arm extending from the first insert surface towards the second insert end, and a second connecting arm extending from the first insert surface towards the second insert end.

14. The brushless motor assembly of claim 13 , further comprising a sensor assembly disposed on the second insert surface, the sensor assembly having a position sensor disposed proximate the first insert end.

15. The brushless motor assembly of claim 14 , wherein the inner wall defines a stop feature configured to engage the first insert end.

16. The brushless motor assembly of claim 15 , wherein the sensor assembly is aligned with a center of the motor.

17. The brushless motor assembly of claim 15 , wherein the inner surface defines a guide rail that is configured to engage at least one of the first insert surface and the second insert surface.

Assignees

• Steering Solutions Ip Holding

Inventors

• Pattok Eric D
• Palmer Caleb S

Classifications

• H02K29/12

  using detecting coils {using the machine windings as detecting coil} · CPC title

• H02K29/10

  using light effect devices · CPC title

• H02K29/08

  using magnetic effect devices, e.g. Hall-plates, magneto-resistors (H02K29/12 takes precedence) · CPC title

• H02K11/23

  Mechanically-actuated centrifugal switches · CPC title

• H02K11/225

  Detecting coils · CPC title