IP Library › Granted Patent US 12712411

Granted Patent B2

US 12712411 · App. 18/043,461 · Granted Aug 18, 2026

Electronic control device with connector head arrangement for electric motor

Inventors: Narutoshi Yamada (Hitachinaka, JP); Takuro Kanazawa (Hitachinaka, JP); Kazuhiko Nakano (Hitachinaka, JP); Hideyuki Hara (Hitachinaka, JP)

Assignee: HITACHI ASTEMO, LTD.

H02K5/225 H02K11/30

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Quick Facts

Patent No.: US 12712411
App. No.: 18/043,461
Granted: Aug 18, 2026
Kind: B2

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Abstract

One first connector head 21 A and one second connector head 22 A face each other, in the plane view of a connector terminal assembly 19 , with the axial line of an output shaft 12 , which is the axial line of the motor rotation shaft of an electric motor, therebetween without being offset from each other. The other first connector head 21 B and the other second connector head 22 B face each other, in the plane view of the connector terminal assembly 19 , with the axial line of the output shaft 12 , which is the axial line of the motor rotation shaft of the electric motor, therebetween without being offset from each other.

Claims (52)

1 . An electric motor drive control device comprising:

an electric motor having a plurality of independent windings;

an electronic control unit configured to control driving of the electric motor;

a plurality of first connector heads to which external terminals are attached; and

at least one second connector head which has a function different from those of the first connector heads, and to which an external terminal is attached,

wherein one of the plurality of first connector heads forms a first pair of connector heads with another of the plurality of first connector heads or with the second connector head, the first pair of the connector heads facing each other with an axial line of a motor rotation shaft of the electric motor therebetween,

wherein one of the plurality of first connector heads or the second connector head forms a second pair of the connector heads with another of the plurality of first connector heads or the second connector head, both connector heads of the second pair of the connector heads positioned between the first pair of the connector heads so as to face each other with the axial line of the motor rotation shaft of the electric motor therebetween,

wherein a terminal of at least one of the second pair of the connector heads positioned between the first pair of the connector heads is arranged at a position facing the first pair of the connector heads,

wherein each of the first connector heads has at least one first terminal capable of supplying electric power and a plurality of second terminals for signal transmission, and the second connector head has a third terminal for signal transmission,

wherein the plurality of second terminals for signal transmission of the first connector head of the second pair of connector heads positioned between the first pair of connector heads are arranged in a straight line,

wherein a longitudinal direction of the at least one first terminal capable of supplying electric power of the first connector head of the first pair of connector heads is orthogonal to the straight line, and

wherein the terminal capable of supplying electric power of the first connector head of the first pair of the connector heads is arranged on an extension of the straight line.

2 . The electric motor drive control device according to claim 1 , wherein the plurality of first connector heads and the second connector head each have a rectangular outer shape in cross section, and

wherein the plurality of first connector heads or the second connector head positioned between the pair of the connector heads is arranged such that different surfaces thereof face the respective pair of the connector heads.

3 . The electric motor drive control device according to claim 1 , wherein each of the plurality of first connector heads is a connector head capable of supplying electric power, and the second connector head is a connector head for signal transmission.

4 . The electric motor drive control device according to claim 1 , wherein the first connector heads each include a coupling part which restricts separation from a corresponding one of the external terminals, and positions of the respective coupling parts of the first connector heads along an axial line direction of the motor rotation shaft of the electric motor are different from each other.

5 . The electric motor drive control device according to claim 1 , wherein a terminal capable of supplying electric power and a terminal for signal transmission are integrated into each of the first connector heads.

6 . The electric motor drive control device according to claim 1 , comprising a connector head member provided with the first connector heads and the second connector head,

wherein the first connector heads and the second connector head each include a coupling part which restricts separation from a corresponding one of the external terminals, and

wherein the coupling part is provided at a part of each of the first connector heads or a part of the second connector head, the part facing an outer peripheral edge side of the connector head member.

7 . An electric motor drive control device comprising:

an electric motor having a plurality of independent windings;

an electronic control unit configured to control driving of the electric motor;

at least four connector heads to which external terminals are attached;

a first connector head group which is a group of a pair of the connector heads which face each other with an axial line of a motor rotation shaft of the electric motor therebetween; and

a second connector head group which is a group of the connector heads which are different from those of the first connector head group and face each other with the axial line of the motor rotation shaft of the electric motor therebetween,

wherein the connector heads of the second connector head group are arranged such that at least a part of each of them faces at least one of the connector heads of the first connector head group,

wherein each of the connector heads of the second connector head group is positioned between the first connector head group,

wherein a terminal of at least one of the connector heads of the second connector head group positioned between the first connector head group is arranged at a position facing the connector heads of the first connector head group,

wherein one of the connector heads of the first connector head group has at least one first terminal capable of supplying electric power and a plurality of second terminals for signal transmission, and one of the connector heads of the second connector head group has at least one third terminal capable of supplying electric power and a plurality of fourth terminals for signal transmission,

wherein the plurality of fourth terminals for signal transmission of the connector heads of the second connector head group positioned between the first connector head group are arranged in a straight line,

wherein a longitudinal direction of the at least one first terminal capable of supplying electric power of the one of the connector heads of the first connector head group is orthogonal to the straight line, and

wherein the first terminal capable of supplying electric power of the one of the connector heads of the first connector head group is arranged on an extension of the straight line.

8 . The electric motor drive control device according to claim 7 , wherein the connector heads of each of the first connector head group and the second connector head group are formed by any of a combination of the first connector head and the second connector head, a combination of only the first connector heads and a combination of only the second connector heads.

9 . The electric motor drive control device according to claim 8 , wherein each of the first connector head and the second connector head has a coupling part which restricts separation from a corresponding one of the external terminals, and positions of the respective coupling parts of a plurality of the first connector heads along an axial line direction of the rotation shaft of the electric motor are different from each other.

10 . The electric motor drive control device according to claim 8 , comprising a connector head member provided with the first connector head and the second connector head,

wherein the first connector head and the second connector head each include a coupling part which restricts separation from a corresponding one of the external terminals, and

wherein the coupling part is provided at a part of each of the first connector head or a part of the second connector head, the part facing an outer peripheral edge side of the connector head member.

11 . An electric motor drive control device comprising:

an electric motor having a plurality of independent windings;

an electronic control unit configured to control driving of the electric motor; and

a plurality of connector heads to which external terminals are attached,

wherein each of the connector heads includes a coupling part which restricts separation from a corresponding one of the external terminals,

wherein positions of the respective coupling parts of the connector heads are different from each other along an axial line direction of a rotation shaft of the electric motor,

wherein the plurality of the connector heads forms two pairs of the connector heads,

wherein a first pair of the connector heads faces each other with the axial line of the motor rotation shaft of the electric motor therebetween, and each connector head of a second pair of the connector heads is positioned between the first pair of the connector heads so as to face each other with the axial line of the motor rotation shaft of the electric motor therebetween,

wherein a terminal of the second pair of the connector heads positioned between the first pair of connector heads is arranged at a position facing the first pair of the connector heads,

wherein one of the first pair of the connector heads has at least one first terminal capable of supplying electric power and a plurality of second terminals for signal transmission, and one of the second pair of the connector heads has at least one third terminal capable of supplying electric power and a plurality of fourth terminals for signal transmission,

wherein the plurality of fourth terminals for signal transmission of the one of the second pair of the connector heads positioned between the first pair of the connector heads are arranged in a straight line,

wherein a longitudinal direction of the at least one first terminal capable of supplying electric power of the one of the first pair of connector heads is orthogonal to the straight line, and

wherein the at least one first terminal capable of supplying electric power of the one of the first pair of connector heads is arranged on an extension of the straight line.

12 . The electric motor drive control device according to claim 11 , wherein as each of the connector heads, one in which a terminal capable of supplying electric power and a terminal for signal transmission are integrated is included.