Motor drive device

• US 10,164,355 B2
• Filed: 11/07/2017
• Issued: 12/25/2018
• Est. Priority Date: 11/09/2016
• Status: Active Grant

• Current Assignee: Fanuc Corporation
• Original Assignee: Fanuc Corporation
• Inventors: Fujii, Shouta, Matsumoto, Kaname
• Primary Examiner(s): Gushi, Ross N
• Application Number:
  US15/805,736
• Publication Number:
  US 20180131108A1
• Time in Patent Office: 413 Days
• Field of Search: 200 6 R, 200 7, 200 15, 200 6 A, 200 48 A, 200 48 KB, 200 48 V, 200 48 SV, 200 48 CB, 200244
• CPC Class Codes: H01R 4/34 Conductive members located under head of screw
• CPC Class Codes: H01R 9/18 Fastening by means of screw or nut
• CPC Class Codes: H01R 9/2458 Electrical interconnections between terminal blocks
• CPC Class Codes: H01R 9/2466 using a planar conductive structure, e.g. printed circuit board
• CPC Class Codes: H02M 7/003 Constructional details, e.g. physical layout, assembly, wiring or busbar connections
• CPC Class Codes: H02P 5/74 controlling two or more ac dynamo-electric motors H02P5/46, H02P5/60 take precedence

Abstract

This motor drive device includes a first motor driving unit, a first terminal block 11 attached to the first motor driving unit, a second motor driving unit, a second terminal block attached to the motor driving unit, a first short bar whose one end portion is attached to the first terminal block so that the first short bar can be rotated around a first axis line, and a second short bar whose one end portion is attached to the first terminal block so that the second short bar can be rotated around a second axis line, the other end sides thereof can be placed at a connection position so that the other end sides can be connected to the second terminal block, and at a retract position which is distant from the second terminal block by rotation of the first and the second short bars.

Claims

1. A motor drive device comprising:

at least two motor driving units for driving a motor,

wherein each of the motor driving units includes a terminal block,

the motor drive device further comprising;

a first short bar whose one end portion is attached to either one of the terminal block of an adjacent pair of the motor driving units so that the first short bar can be rotated around a first axis line; and

a second short bar whose one end portion is attached to either one of the terminal blocks of the adjacent pair of the motor driving units so that the second short bar can be rotated around a second axis line which is substantially parallel to the first axis line;

wherein

the other end portion of the first short bar can be placed at a connection position so that the other end side of the first short bar can be connected to the terminal block of the adjacent motor driving unit, and can be placed at a retraction position which is distant from the terminal block of the adjacent motor driving unit by rotation around a certain position of the one end portion of the first short bar, and

the other end portion of the second short bar can be placed at a connection position so that the other end side of the second short bar can be connected to the terminal block of the adjacent motor driving unit, and can be placed at a retraction position which is distant from the terminal block of the adjacent motor driving unit by rotation around a certain position of the one end portion of the second short bar;

wherein the each of the terminal blocks has a partition which is the only protruding object protruding toward a direction which is substantially parallel to the first or the second axis lines of the first and the second short bars, and

the partition is placed between the other end side of the first short bar and the other end side of the second short bar which are placed at the connection positions.

2. A motor drive device comprising:

at least two motor driving units for driving a motor,

wherein each of the motor driving units includes a terminal block,

the motor drive device further comprising;

a first short bar whose one end portion is attached to either one of the terminal block of an adjacent pair of the motor driving units so that the first short bar can be rotated around a first axis line; and

a second short bar whose one end portion is attached to either one of the terminal blocks of the adjacent pair of the motor driving units so that the second short bar can be rotated around a second axis line which is substantially parallel to the first axis line;

wherein

the other end portion of the first short bar can be placed at a connection position so that the other end side of the first short bar can be connected to the terminal block of the adjacent motor driving unit, and can be placed at a retraction position which is distant from the terminal block of the adjacent motor driving unit by rotation around a certain position of the one end portion of the first short bar, and

the other end portion of the second short bar can be placed at a connection position so that the other end side of the second short bar can be connected to the terminal block of the adjacent motor driving unit, and can be placed at a retraction position which is distant from the terminal block of the adjacent motor driving unit by rotation around a certain position of the one end portion of the second short bar;

wherein each of the terminal blocks has a partition which is provided between the first short bar and the second short bar, and

wherein a surface of the partition which faces at least one of the first short bar and the second short bar has a concave surface whose concave is depending on a rotation radius of the one end portion of the first short bar or the second short bar.