Gasket and motor-driven compressor

Patent metadata

Field	Value
Publication number	US-9784261-B2
Application number	US-201113696158-A
Country	US
Kind code	B2
Filing date	Aug 30, 2011
Priority date	Sep 10, 2010
Publication date	Oct 10, 2017
Grant date	Oct 10, 2017

Abstract

Provided is a gasket ( 30 ), which is used in a motor-driven compressor including an inverter housing, including a flat core of metal ( 31 ) and an elastic foamed material ( 32 ) so disposed as to cover both surfaces of the core ( 31 ), and the gasket ( 30 ) has embossed recesses and projections ( 33 ) with predetermined shapes. It is possible to enhance sealing performance to seal the inverter housing by using this gasket ( 30 ). A motor-driven compressor using this gasket ( 30 ) enhances vibration prevention.

First claim

The invention claimed is:

1. A motor-driven compressor comprising:
a housing body having an aperture and housing an inverter thereinside;
a cover member covering the aperture;
a gasket so disposed between the housing body and the cover member as to seal a gap between the housing body and the cover member;
a projected portion projecting outward, which is provided at an upper position of one side face of a surrounding wall of the housing body;
a cut-out formed in the projected portion, wherein an opening of the cut-out reaches the aperture of the housing body; and
a cable holder of non-metal fit in the cut-out,
the gasket including:
a flat core of metal having two opposing surfaces; and
an elastic foamed material disposed so as to cover both surfaces of the core,
wherein the gasket has embossed recesses and projections with predetermined shapes,
wherein the core and the elastic foamed material have a same shape of the recesses and projections, and
wherein a liquid gasket is disposed between the cable holder and the cover member as to seal a gap between the cable holder and the cover member.

2. The motor-driven compressor according to claim 1 , wherein
the housing body and the cover member are clamped to each other with bolts, and
the recesses and projections on the gasket are located more inward than the bolts in the housing body.

3. The motor-driven compressor according to claim 1 , wherein the same shape of the
the elastic foamed material is foamed rubber containing a rubber selected from NBR and other rubbers.

4. The motor-driven compressor according to claim 1 , wherein an eigenvalue of a frequency after the housing body and the cover member is clamped is set at 1 kHz or less.

5. The motor-driven compressor according to claim 1 , wherein the same shape includes a curved portion.

Assignees

• Hagita Takayuki
• Takahashi Shinichi
• Hirano Takeshi
• Arashi Noriaki
• Watanabe Takayuki
• Mitsubishi Heavy Ind Ltd

Inventors

• Hagita Takayuki
• Takahashi Shinichi
• Hirano Takeshi
• Arashi Noriaki
• Watanabe Takayuki

Classifications

• F04B35/04

  the means being electric · CPC title

• F04B39/121 Primary

  Casings · CPC title

• F04C2270/12

  Vibration · CPC title

• F01C21/10

  Outer members for co-operation with rotary pistons; Casings (casings for rotary engines or machines in general F16M) · CPC title

• Y10T137/6851

  With casing, support, protector or static constructional installations · CPC title