Armature, method for winding armature coil, and DC motor

Patent metadata

Field	Value
Publication number	US-10355571-B2
Application number	US-201816022461-A
Country	US
Kind code	B2
Filing date	Jun 28, 2018
Priority date	Oct 22, 2013
Publication date	Jul 16, 2019
Grant date	Jul 16, 2019

Abstract

An armature includes an armature core, teeth, a commutator, concentrated winding wires, and distributed winding wires. Each of the teeth includes a first branch portion and a second branch portion. Each of segments in the commutator has a riser. A start end and a terminal end of the concentrated winding wire are pulled out separately in a direction getting closer to the commutator and in a direction away from the commutator. The conductor between the concentrated winding wires is hooked by the riser by which the conductor between the other concentrated winding wires is not hooked. A start end and a terminal end of the distributed winding wire are pulled out separately in a direction getting closer to the commutator and in a direction away from the commutator. The conductor between the distributed winding wires is hooked by the riser by which at least one of the conductor between the concentrated winding wires and the conductor between the other distributed winding wires is not hooked.

First claim

What is claimed is:

1. An armature comprising:
an armature core;
a plurality of teeth provided so as to be arranged in a circumferential direction of the armature core, each of the teeth including an inner winding portion located on a base end side and extending in a radial direction and a first branch portion and a second branch portion branching from a distal end of the inner winding portion in a bifurcated manner in the circumferential direction and extending in the radial direction;
a commutator integrally rotated with the armature core, the commutator having segments in the number twice of the number of the teeth arranged in the circumferential direction and each of the segments having a riser;
a plurality of concentrated winding wires, each of the concentrated winding wires being formed of a conductor wound around each of the inner winding portions of the teeth; and
a plurality of distributed winding wires, each of the distributed winding wires being formed of the conductor wound between the first branch portion of one of the adjacent teeth and the second branch portion of another of the teeth, wherein
each of the concentrated winding wires is wound such that a start end and a terminal end thereof are pulled out separately in a direction getting closer to the commutator and in a direction away from the commutator;
the conductor between the concentrated winding wires is hooked by the riser by which the conductor between the other concentrated winding wires is not hooked;
each of the distributed winding wires is wound such that a start end and a terminal end thereof are pulled out separately in a direction getting closer to the commutator and in a direction away from the commutator; and
the conductor between the distributed winding wires is hooked by the riser by which at least one of the conductor between the concentrated winding wires and the conductor between the other distributed winding wires is not hooked.

2. A winding-wire winding method of an armature including:
an armature core;
a plurality of teeth provided so as to be arranged in a circumferential direction of the armature core, each of the teeth including an inner winding portion located on a base end side and extending in a radial direction and a first branch portion and a second branch portion branching from a distal end of the inner winding portion in a bifurcated manner in the circumferential direction and extending in the radial direction;
a commutator integrally rotated with the armature core, the commutator having segments in the number twice of the number of the teeth arranged in the circumferential direction and each of the segments having a riser;
a plurality of concentrated winding wires, each of the concentrated winding wires being formed of a conductor wound around each of the inner winding portions of the teeth; and
a plurality of distributed winding wires, each of the distributed winding wires being formed of the conductor wound between the first branch portion of one of the adjacent teeth and the second branch portion of another of the teeth, comprising:
winding the plurality of concentrated winding wires by two winding machines relatively arranged so as to face each other by 180°, each of the two winding machines winding a half of the plurality of concentrated winding wires; and
after winding the concentrated winding wires, winding the plurality of distributed winding wires by the two winding machines, each of the two winding machines winding a half of the plurality of distributed winding wires, wherein
each of the concentrated winding wires is wound such that a start end and a terminal end thereof are pulled out separately in a direction getting closer to the commutator and in a direction away from the commutator;
the conductor between the concentrated winding wires is hooked by the riser by which the conductor between the other concentrated winding wires is not hooked;
each of the distributed winding wires is wound such that a start end and a terminal end thereof is pulled out separately in a direction getting closer to the commutator and in a direction away from the commutator; and
the conductor between the distributed winding wires is hooked by the riser by which at least one of the conductor between the concentrated winding wires and the conductor between the other distributed winding wires is not hooked.

3. The winding-wire winding method of an armature according to claim 2 , wherein
a half of the plurality of concentrated winding wires is continuously wound;
after the conductor between the concentrated winding wires determined in advance is hooked by the riser, the subsequent concentrated winding wire is wound;
a half of the plurality of distributed winding wires is continuously wound;
after the conductor between the distributed winding wires determined in advance is hooked by the riser, the subsequent distributed winding wire is wound;
the winding-wire winding method of an armature further comprises:
cutting off and removing an unnecessary portion of conductor located between the concentrated winding wires after the concentrated winding wires are wound; and
cutting off and removing the unnecessary portion of conductor located between the distributed winding wires after the distributed winding wires are wound.

4. The winding-wire winding method of an armature according to claim 3 , wherein
the conductor is routed so that both side portions of the unnecessary portion of conductor located between the concentrated winding wires are arranged on an outermost periphery of the concentrated winding wire wound in a preceding process, respectively;
both ends of the unnecessary portion of conductor close to the commutator are cut off and the unnecessary portion of conductor is pulled out in a direction away from the commutator;
the conductor is routed so that both side portions of the unnecessary portion of conductor located between the distributed winding wires are arranged on an outermost periphery of the distributed winding wire wound in the preceding process, respectively; and
both the ends of the unnecessary portion of conductor close to the commutator are cut off and the unnecessary portion of conductor is pulled out in the direction away from the commutator.

5. The winding-wire winding method of an armature according to claim 3 , wherein
both side portions of the unnecessary portion of conductor located between the concentrated winding wires are embedded inside in the radial direction in the concentrated winding wire wound in a subsequent process, respectively;
both ends far from the commutator of the unnecessary portion of conductor are cut off with both the side portions embedded in the concentrated winding wire and the unnecessary portion of conductor is removed;
both the side portions of the unnecessary portion of conductor located between the distributed winding wires are embedded inside in the radial direction in the distributed winding wire wound in the subsequent process, respectively; and
both the ends far from the commutator of the unnecessary portion of conductor are cut off with both the side portions embedded in the distributed winding wire and the unnecessary portion of conductor is removed.

6. A DC motor having the armature produced by the winding-wire winding method of an armature according to claim 2 .

7. A winding-wire winding method of an armature including:
an armature core;
a plurality of teeth provided so as to be arranged in a circumferential direction of the armature core, each of the teeth including an inner winding portion located on a base end side and extending in a radial direction and a first branch portion and a second branch portion branching from a distal end of the inner winding portion in a bifurcated manner in the c

Assignees

• Denso Corp

Inventors

• Seki Akihiko
• Okamoto Tomohisa
• Ohshita Takehiko

Classifications

• H02K3/28

  Layout of windings or of connections between windings (windings for pole-changing H02K17/06, H02K17/14, H02K19/12, H02K19/32) · CPC title

• Y10T29/49009

  Dynamoelectric machine · CPC title

• H02K15/095

  by laying conductors around salient poles · CPC title

• H02K23/30

  having lap or loop windings · CPC title

• H02K1/24

  Rotor cores with salient poles {; Variable reluctance rotors} · CPC title