Motor bracket with integral terminals

• US 7,518,274 B1
• Filed: 06/12/2006
• Issued: 04/14/2009
• Est. Priority Date: 06/12/2006
• Status: Expired due to Fees

• Current Assignee: Electro Motor, Inc.
• Original Assignee: Dennis J. Mancl, Leonard J. Lavasser
• Inventors: Lavasser, Leonard J., Mancl, Dennis J.
• Primary Examiner(s): Nguyen; Tran N
• Application Number:
  US11/451,203
• Time in Patent Office: 1,037 Days
• Field of Search: 310/43, 310/71, 310/239, 310/242, 310/249, 427116-120
• US Class Current: 310/71
• CPC Class Codes: H02K 33/02 with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs
• CPC Class Codes: H02K 33/12 with armatures moving in alternate directions by alternate energisation of two coil systems

Abstract

A universal motor comprises a stator interposed between a housing and a novel plastic bracket. The plastic bracket is a unitary piece that not only defines a plurality of terminal receptacles but also supports the motor'"'"'s outboard bearing. In some embodiments, the plastic bracket also includes an integral post for supporting a spring that urges a carbon brush against the motor'"'"'s commutator.

Claims

1. A motor for turning a driven member at an inboard end of the motor, the motor comprising:

a housing at the inboard end of the motor;

a plastic bracket at an outboard end of the motor;

a stator core interposed between the housing and the plastic bracket;

a first field winding and a second field winding in proximity with the stator core to induce a magnetic field therein;

a wire lead 1a and a wire lead 1b extending from the first field winding;

a wire lead 2a and a wire lead 2b extending from the second field winding;

an inboard bearing supported by the housing;

an outboard bearing supported by the plastic bracket;

a rotor supported by the inboard bearing and the outboard bearing;

a rotor winding supported by the rotor;

a commutator supported by the rotor;

a first brush supported by the plastic bracket and biased against the commutator;

a first brush shunt extending from the first brush and terminating at a first female connector;

a second brush supported by the plastic bracket and biased against the commutator;

a second brush shunt extending from the second brush and terminating at a second female connector;

four receptacles including a first receptacle, a second receptacle, a third receptacle and a fourth receptacle, wherein the four receptacles and the plastic bracket comprise an undivided unitary piece;

a first split dagger disposed within the first receptacle and defining a first crevice;

a second split dagger disposed within the second receptacle and defining a second crevice;

a third split dagger disposed within the third receptacle and defining a third crevice;

a fourth split dagger disposed within the fourth receptacle and defining a fourth crevice;

a first male connector extending from the first split dagger and engaging the first female connector;

a second male connector extending from the second split dagger;

a third male connector extending from the third split dagger and engaging the second female connector; and

a fourth male connector extending from the fourth split dagger, wherein the following is true;

a) the wire lead 1a is pinched within the first crevice,

b) the wire lead 1b is pinched within the second crevice,

c) the wire lead 2a is pinched within the third crevice,

d) the wire lead 2b is pinched within the fourth crevice

e) the first female connector is attached to the first split dagger but is spaced apart from the first crevice, and

f) the second female connector is attached to the second split dagger but is spaced apart from the second crevice.

2. The motor of claim 1, further comprising:

a first post integrally extending from the plastic bracket;

a second post integrally extending from the plastic bracket such that the first post, the second post, the four receptacles and the plastic bracket comprise the unitary piece;

a first spring supported by the first post and engaging the first brush such that the first spring urges the first brush against the commutator; and

a second spring supported by the second post and engaging the second brush such that the second spring urges the second brush against the commutator.