Power converting apparatus

• US 8,797,738 B2
• Filed: 04/12/2012
• Issued: 08/05/2014
• Est. Priority Date: 04/18/2011
• Status: Active Grant

• Current Assignee: Kabushiki Kaisha Yaskawa Denki
• Original Assignee: Kabushiki Kaisha Yaskawa Denki
• Inventors: Nagano, Sumiaki, Kishimoto, Kazutaka, Kojyo, Makoto
• Primary Examiner(s): HOFFBERG, ROBERT JOSEPH
• Application Number:
  US13/444,846
• Publication Number:
  US 20120262968A1
• Time in Patent Office: 845 Days
• Field of Search: 361/678, 361/690, 174/547, 174668-669, 363/141
• US Class Current: 361/690
• CPC Class Codes: H02M 7/003 Constructional details, e.g. physical layout, assembly, wiring or busbar connections
• CPC Class Codes: H05K 7/1432 specially adapted for power drive units or power converters
• CPC Class Codes: H05K 7/14322 wherein the control and power circuits of a power converter are arranged within the same casing
• CPC Class Codes: H05K 7/20918 the components being isolated from air flow, e.g. hollow heat sinks, wind tunnels or funnels

Abstract

A power converting apparatus includes a housing, a cable, and a grommet supporting member. The housing includes a housing base, a main body, and an air duct. The housing base has a first surface and a second surface and includes a through hole. The main body includes a plurality of electronic components on the first surface of the housing base. The air duct is disposed on the second surface of the housing base, and cooling air flows through the air duct. The cable is disposed through the through hole of the housing base so as to be wired between the main body and the air duct. The grommet supporting member is in the air duct or the main body. The grommet supporting member supports a grommet through which the cable is disposed. The grommet supporting member is not integral with the housing base.

Claims

1. A power converting apparatus configured to convert alternating current power into direct current power or convert direct current power into alternating current power, the power converting apparatus comprising:

a housing comprising;

a housing base having a first surface and a second surface and comprising a through hole;

a main body comprising a plurality of electronic components on the first surface of the housing base; and

an air duct through which cooling air flows on the second surface of the housing base;

a cable disposed through the through hole of the housing base so as to be wired between the main body and the air duct; and

a grommet supporting member in at least one of the air duct or the main body, the grommet supporting member supporting a grommet through which the cable is disposed, the grommet supporting member being not integral with the housing base,

wherein the grommet supporting member comprises;

a holder through which the grommet is disposed so as to hold the grommet, the holder comprising a close contact portion extending parallel to and in close contact with a circumference of the through hole of the housing base; and

a gasket disposed on the close contact portion at a location sandwiched between the close contact portion and the circumference of the through hole of the housing base.

2. The power converting apparatus according to claim 1, wherein the grommet supporting member is configured to hermetically seal the through hole of the housing base.

3. The power converting apparatus according to claim 2,

wherein the grommet supporting member further comprises:

at least one linkage coupling the holder and the housing to one another.

4. The power converting apparatus according to claim 3,

wherein the housing base has a width direction, and the housing comprises housing side walls on respective sides of the housing base in the width direction, and

wherein the at least one linkage comprises a plurality of linkages coupling the holder of the grommet supporting member to the housing side walls, the housing side walls being disposed on respective sides of the holder in the width direction.

5. The power converting apparatus according to claim 4, wherein the grommet supporting member comprises a plurality of grommet supporting members supporting a plurality of grommets.

6. The power converting apparatus according to claim 4, further comprising a reactor in the air duct,

wherein the cable comprises a lead wire for the reactor, and

wherein the grommet supporting member is disposed in the air duct.

7. The power converting apparatus according to claim 3,

wherein the housing base has a width direction, and the housing comprises housing side walls on respective sides of the housing base in the width direction, and

wherein the at least one linkage comprises a plurality of linkages, the plurality of linkages coupling the holder of the grommet supporting member to the housing side walls.

8. The power converting apparatus according to claim 7, wherein the grommet supporting member comprises a plurality of grommet supporting members supporting a plurality of grommets.

9. The power converting apparatus according to claim 7, further comprising a reactor in the air duct,

wherein the cable comprises a lead wire for the reactor, and

wherein the grommet supporting member is disposed in the air duct.

10. The power converting apparatus according to claim 3, wherein the grommet supporting member comprises a plurality of grommet supporting members supporting a plurality of grommets.

11. The power converting apparatus according to claim 3, further comprising a reactor in the air duct,

wherein the cable comprises a lead wire for the reactor, and

wherein the grommet supporting member is disposed in the air duct.

12. The power converting apparatus according to claim 2, wherein the grommet supporting member comprises a plurality of grommet supporting members supporting a plurality of grommets.

13. The power converting apparatus according to claim 12, further comprising a reactor in the air duct,

wherein the cable comprises a lead wire for the reactor, and

wherein the grommet supporting member is disposed in the air duct.

14. The power converting apparatus according to claim 2, further comprising a reactor in the air duct,

wherein the cable comprises a lead wire for the reactor, and

wherein the grommet supporting member is disposed in the air duct.

15. The power converting apparatus according to claim 1, wherein the grommet supporting member is configured to support a plurality of grommets.

16. The power converting apparatus according to claim 15, further comprising a reactor in the air duct,

wherein the cable comprises a lead wire for the reactor, and

wherein the grommet supporting member is disposed in the air duct.

17. The power converting apparatus according to claim 1, further comprising a reactor in the air duct,

wherein the cable comprises a lead wire for the reactor, and

wherein the grommet supporting member is disposed in the air duct.