Motor-driven compressor

Patent metadata

Field	Value
Publication number	US-9246320-B2
Application number	US-201113251425-A
Country	US
Kind code	B2
Filing date	Oct 3, 2011
Priority date	Oct 7, 2010
Publication date	Jan 26, 2016
Grant date	Jan 26, 2016

Abstract

A motor-driven compressor includes a shell, an electric motor, a first conductor electrically connected to an external power source, a second conductor electrically connected to the electric motor, a connector connecting the first conductor and the second conductor and a connector case. The connector case has a first case member, a second case member, a first and a second seal members interposed between the first and the second case members, a hole through which the first conductor is inserted and a third seal member sealing between the first conductor and the connector case. A first main seal of the first seal member and a second main seal of the second seal member cooperate to form a cylindrical seal portion for sealing the second conductor that is inserted through the cylindrical seal portion when the first and the second seal members are joined.

First claim

What is claimed is:

1. A motor-driven compressor, comprising:
a shell provided with a base;
an insulator fixed to the base;
an electric motor provided in the shell;
a first conductor extended through the shell and electrically connected to an external power source, the first conductor inserted through and fixed to the insulator fixed to the base;
a second conductor electrically connected to the electric motor;
a connector connecting the first conductor and the second conductor; and
a connector case made of resin, configured to receive the connector,
wherein the connector case includes:
a first case member including a first seal surface extending along a periphery of the first case member and including a cylindrical portion formed integrally therewith;
a second case member including a second seal surface extending along a periphery of the second case member and facing the first seal surface;
a first seal member interposed between the first and second case members and having a first main seal that is joined to the first seal surface;
a second seal member interposed between the first and second case members and having a second main seal that is joined to the second seal surface;
a hole through which the first conductor is inserted; and
a third seal member insert fitted in the cylindrical portion of the first case member in the connector case, so as to directly contact an inner surface of the cylindrical portion, and the third seal member interposed between an outer surface of the insulator and the inner surface of the cylindrical portion so as to form a seal between the insulator and cylindrical portion of the connector case, wherein the first main seal and the second main seal cooperate to form a cylindrical seal portion for sealing the second conductor that is inserted through the cylindrical seal portion when the first and the second seal members are joined, and wherein the cylindrical portion of the first case member of the connector case contacts the base, and
wherein the connector case, the insulator, the first seal member, the second seal member and the third seal member are housed in the shell.

2. The motor-driven compressor according to claim 1 , wherein the motor-driven compressor includes a plurality of sets of the connector, the first conductor and the second conductor, wherein the first seal member further includes:
a first partition seal portion continuous with the first main seal and electrically insulating between any two adjacent connectors in the connector case, wherein the second seal member further includes:
a second partition seal portion continuous with the second main seal and electrically insulating between any two adjacent connectors in the connector case.

3. The motor-driven compressor according to claim 2 , wherein the first partition seal portion includes:
a first projection formed in the first partition seal portion, wherein the second partition seal portion includes:
a second projection formed in the second partition seal portion, wherein the first case member further includes:
a first groove formed in the first seal surface and engageable with the first projection, wherein the second case member further includes:
a second groove formed in the second seal surface and engageable with the second projection.

4. The motor-driven compressor according to claim 1 , wherein the hole is formed in the first case member.

5. The motor-driven compressor according to claim 1 , wherein the first main seal further includes:
a first peripheral seal portion on one side of the first seal member and opposite from the cylindrical seal portion;
a second peripheral seal portion that is opposite from the first peripheral seal portion and forms a part of the cylindrical seal portion;
a first side seal portion connecting one end of the first peripheral seal portion and one end of the second peripheral seal portion; and
a second side seal portion connecting the other end of the first peripheral seal portion and the other end of the second peripheral seal portion, wherein the second main seal further includes:
a third peripheral seal portion on one side of the second seal member and opposite from the cylindrical seal portion;
a fourth peripheral seal portion that is opposite from the third peripheral seal portion and forms a part of the cylindrical seal portion;
a third side seal portion connecting one end of the third peripheral seal portion and one end of the fourth peripheral seal portion; and
a fourth side seal portion connecting the other end of the third peripheral seal portion and the other end of the fourth peripheral seal portion.

6. The motor-driven compressor according to claim 5 , wherein each of the first case member and the second case member further includes:
an engaging member, wherein the engaging member of the first case member is engageable with the engaging member of the second case member when the second case member is joined to the first case member, wherein one of the first case member and the second case member further includes:
a pair of third projections provided so as to place the engaging member of the one of the first case member and the second case member between the pair of third projections, wherein the first side seal portion further includes:
a first tab that is engageable with the engaging member or the pair of third projections; wherein the second side seal portion further includes:
a second tab that is engageable with the engaging member or the pair of third projections; wherein the third side seal portion further includes:
a third tab that is engageable with the engaging member or the pair of third projections; wherein the fourth side seal portion further includes:
a fourth tab that is engageable with the engaging member or the pair of third projections.

7. The motor-driven compressor according to claim 1 , wherein the first seal member and the second seal member are provided separately.

8. The motor-driven compressor according to claim 1 , wherein the second seal member is made of substantially the same shape as the first seal member.

9. The motor-driven compressor according to claim 5 , wherein the first seal member and the second seal member are formed integrally as a single structure so that the first peripheral seal portion is connected directly to the third peripheral seal portion.

10. The motor-driven compressor according to claim 1 , wherein the first seal member, the second seal member and the third seal member are made of a rubber.

Assignees

• Yamada Tetsuya
• Suitou Ken
• Enami Shingo
• Fujii Akio
• Toyota Jidoshokki Kk

Inventors

• Yamada Tetsuya
• Suitou Ken
• Enami Shingo
• Fujii Akio

Classifications

• F04B39/12

  Casings; Cylinders; Cylinder heads; Fluid connections · CPC title

• H02G15/013 Primary

  Sealing means for cable inlets (inlets for cables filled with, or surrounded by, gas or oil H02G15/32) · CPC title

• F04B39/121

  Casings · CPC title

• F04B35/04

  the means being electric · CPC title

• F04C18/0215

  where only one member is moving · CPC title