# US 10,119,528 B2 · Electric compressor with component for blocking electromagnetic noise

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- Number: US 10,119,528 B2
- Document ID: US10119528B2
- Status: Granted
- Kind: B2
- Application number: 14/699,238
- Filed: 2015-04-29
- Published: 2015-11-12
- Granted: 2018-11-06
- Earliest claimed: 2014-05-07
- Assignees: Kabushiki Kaisha Toyota Jidoshokki
- Applicants: Kabushiki Kaisha Toyota Jidoshokki
- Inventors: Akio Fujii; Yusuke Kinoshita; Kazuhiro Kuroki; Tatsuya Koide
- Web page: https://patentgrep.com/patent/US10119528B2

## CPC

- F04B 35/04: the means being electric
- F04C 18/0215: {where only one member is moving}
- F04C 23/02: Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04C 29/0085: {Prime movers}
- H02K 5/22: Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
- H02K 11/0141: {Shields associated with casings, enclosures or brackets}
- H02K 5/225: {Terminal boxes or connection arrangements (specially adapted for submersible motors H02K5/132)}
- F04B: POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS (machines for liquids, or pumps, of rotary-piston or oscillating-piston type F04C; non-positive-displacement pumps F04D; pumping of fluid by direct contact of another fluid or by using inertia of fluid to be pumped F04F)
- F04C: ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS (engines F03C); ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53})

## Abstract

An electric compressor includes a housing a compression mechanism, an electric motor and a motor driving circuit. The motor driving circuit includes a circuit board and an electronic component mounted on the circuit board. The electric compressor further includes a bus bar, a shield plate having a bolt hole and an intervening portion interposed between the bus bar and the shield plate. The bus bar, intervening portion and the shield plate are integrated by a resin member. A part of the intervening portion on a side thereof opposite from the shield plate and/or a part of the bus bar on a side thereof opposite from the shield plate is exposed without being covered with the resin member. A surface of the shield plate around the bolt hole on a side thereof opposite from the intervening portion is exposed without being covered with the resin member.

## Claims

### Claim 1

An electric compressor comprising:
a housing;
a compression mechanism disposed in the housing;
an electric motor disposed in the housing;
a motor driving circuit disposed in the housing and including a circuit board and an electronic component mounted on the circuit board;
a bus bar configured to supply electric power from an external power source to the circuit board; and
a shield plate provided between the electronic component and the bus bar for preventing transmission of electromagnetic noise;
wherein the shield plate has a bolt hole through which a bolt is inserted,
wherein an intervening portion is made of a resin and interposed between the bus bar and the shield plate to ensure electric insulation therebetween,
wherein the bus bar, the intervening portion, and the shield plate are substantially enclosed over top and bottom portions thereof by a resin member,
wherein a part of the intervening portion on a side thereof opposite from the shield plate and/or a part of the bus bar on a side thereof opposite from the shield plate is exposed through the resin member without being covered with the resin member, and
wherein a part of the shield plate around the bolt hole on a side thereof opposite from the intervening portion is exposed through the resin member without being covered with the resin member.

### Claim 2 (depends on 1)

The electric compressor according to claim 1, wherein a surface of the shield plate on the side thereof opposite from the intervening portion has an exposed portion that is exposed without being covered with the resin member.

### Claim 3 (depends on 1)

The electric compressor according to claim 1, wherein the intervening portion and the resin member are made of the same kind of resin.

### Claim 4 (depends on 1)

The electric compressor according to claim 1, wherein the intervening portion comprises a rectangular frame.

### Claim 5 (depends on 4)

The electric compressor according to claim 4, wherein the intervening portion further comprises cross-bars extending across the rectangular frame.