US 9,521,775 B2Granted

Drive apparatus

AssigneeDenso Corporation

InventorMasashi Yamasaki

Life of this patent

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Abstract

A drive apparatus includes a power module, a connector and a heat sink. The connector is used for electric connection to an external side and has a flange, which is formed on its peripheral wall. The heat sink is formed to have a module holding part for holding the power module and a fitting hole for fitting with the flange and has a connector holding part for holding a connector. The flange is formed along a first surface, which faces the connector holding part of the peripheral wall, and side surfaces, which are formed on both sides of the first surface. Thus, water droplets are prevented from entering into a control unit through a clearance between the connector and the heat sink without adding other members such as a water preventing cover.

Claims11

Dependent claims

A drive apparatus comprising:

a semiconductor module including switching elements;
a connector provided for electrical connection with an external part and including a peripheral wall and a first fitting part formed on the peripheral wall;
a holding member including a module holding part and a connector holding part, the module holding part holding the semiconductor module, and the connector holding part being provided with a second fitting part for fitting with the first fitting part and holding the connector, wherein the first fitting part is formed on a first surface of the peripheral wall, which faces an accommodation bottom part of the connector holding part, and side walls, which are formed on both sides of the first surface;
a buffer chamber formed at a fitting position, at which the first fitting part and the second fitting part are fitted each other;
and
a cover member for accommodating the semiconductor module and the holding member therein;
wherein:
the second fitting part is formed at a top end of the connector holding part;
and
the buffer chamber is defined by the connector, the connecter holding part and the cover member.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/885,113Filed 16 Oct 2015 · division
Priority: JP 2012-26238230 Nov 2012
Published: US 2016/0036286 A14 Feb 2016
Granted: 13 Dec 2016
Term ends: Not estimatedThe source records don’t support an estimate.

Classification4 codes

H05K 7/14322
Specially adapted for power drive units or power converters: wherein the control and power circuits of a power converter are arranged within the…
H02K 5/10
Casings or enclosures characterised by the shape, form or construction thereof: with arrangements for protection from ingress, e.g. water or fingers
H05K
Printed circuits
H02K
Dynamo-electric machines

Family

Application14/093,615Parent of this division · filed 2 Dec 2013
US 2016/0036286 A1Pre-grant publication · published 4 Feb 2016
US 9,271,422 B2Parent of this division
US 2014/0153198 A1Published application
US 9,521,775 B2This patent

From the US filing history. Foreign family members aren’t listed.

Timeline

Citations

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