# US 10,320,172 B2 · Electric wire lead-in part structure of electric compressor, and electric compressor and shield electric wire provided with same

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- Number: US 10,320,172 B2
- Document ID: US10320172B2
- Status: Granted
- Kind: B2
- Application number: 16/079,518
- Filed: 2017-06-19
- Published: 2019-02-14
- Granted: 2019-06-11
- Earliest claimed: 2016-06-24
- Assignees: Mitsubishi Heavy Industries Thermal Systems, Ltd.
- Applicants: Mitsubishi Heavy Industries Thermal Systems, Ltd.
- Inventors: Makoto Hattori; Hiroyuki Kamitani; Hiroto Higuchi; Takayuki Takashige; Takeo Hayashi
- Web page: https://patentgrep.com/patent/US10320172B2

## CPC

- H02G 3/22: Installations of cables or lines through walls, floors or ceilings, e.g. into buildings
- B60R 16/0215: {Protecting, fastening and routing means therefor}
- B60R 16/0222: {Grommets}
- F04B 35/04: the means being electric
- F04B 39/00: Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B 39/121: {Casings}
- F04C 29/00: Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- H01B 9/028: {with screen grounding means, e.g. drain wires}
- H01R 4/308: {Conductive members located parallel to axis of screw}
- H02G 3/0616: {Joints for connecting tubing to casing}
- H05K 5/069: {Other details of the casing, e.g. wall structure, passage for a connector, a cable, a shaft}
- H05K 9/0018: {with provisions to reduce aperture leakages in walls, e.g. terminals, connectors, cables}
- H05K 9/0098: {for shielding electrical cables}
- F04B 37/12: to obtain high pressure
- F04C 2240/803: Electric connectors or cables; Fittings therefor
- H01R 11/12: End pieces terminating in an eye, hook, or fork
- H02G: INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- B60R: VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- 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
- H01B: CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES (selection for magnetic properties H01F1/00; waveguides H01P {; printed circuits H05K})
- H01R: ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS

## Abstract

An electric wire lead-in part structure (15) includes: a conductor insertion hole (16) formed through a wall part (2Ca) of an inverter accommodating chamber; a conductor member (17) made of an electrically conductive material and inserted into the conductor insertion hole (16) in a waterproof manner and also, electrically conducted to the conductor insertion hole (16) and holding a power supply cable (11) passed therethrough; a shield grounding part (50) for electrically conducting a shield part (45) of the power supply cable (11) to the conductor member (17) at a position where the conductor member (17) is provided; and an electric wire waterproofing part (40) for waterproofing a gap between the conductor member (17) and the power supply cable (11). The shield grounding part (50) is configured to fasten a set screw (52) abutted against a crimp ring (55) provided on the shield part (45), the set screw (52) being threadedly engaged with the conductor member (17) so as to protrude into an electric wire passing hole (23) formed in the conductor member (17), across the axial direction of the electric wire passing hole (23).

## Claims

### Claim 1

An electric wire lead-in part structure of an electric compressor which is configured to lead a shield electric wire such as a power supply cable into an inverter accommodating chamber of the electric compressor, comprising:
a conductor insertion hole formed through a wall part of the inverter accommodating chamber;
a conductor member made of an electrically conductive material and inserted into the conductor insertion hole in a waterproof manner and also, electrically conducted to the conductor insertion hole and holding the shield electric wire passed therethrough;
a shield grounding part for electrically conducting a shield part of the shield electric wire to the conductor member at a position where the conductor member is provided; and
an electric wire waterproofing part for waterproofing a gap between the conductor member and the shield electric wire.

### Claim 2 (depends on 1)

The electric wire lead-in part structure of an electric compressor according to claim 1, wherein the shield grounding part is configured to fasten a set screw abutted against the shield part, the set screw being threadedly engaged with the conductor member so as to protrude into an electric wire passing hole formed in the conductor member, across an axial direction of the electric wire passing hole.

### Claim 3 (depends on 2)

The electric wire lead-in part structure of an electric compressor according to claim 2, wherein a crimp ring that is electrically conducted to the shield part, is fit around the shield electric wire at midpoint thereof, and the set screw is brought into abutment with the shield part via the crimp ring.

### Claim 4 (depends on 1)

The electric wire lead-in part structure of an electric compressor according to claim 1, further comprising:
a covering member configured to cover the conductor insertion hole and outside of the conductor member; and
a joint part configured to fasten the conductor member and the covering member together to the wall part,
wherein the electric wire waterproofing part comprises:
an inner end surface of the covering member;
a cylindrical hole-like sealing member engagement recess formed in the conductor member adjoining outside in an axial direction of the electric wire passing hole, and closed by the inner end surface of the covering member; and
a sealing member that is formed of an elastic material into a short cylindrical shape, that has a larger size in thickness than an axial depth of the sealing member engagement recess, that is fit into the sealing member engagement recess, and that allows the shield electric wire to pass therethrough.

### Claim 5 (depends on 1)

A shield electric wire comprising the electric wire lead-in part structure of an electric compressor according to claim 1.

### Claim 6 (depends on 1)

An electric compressor comprising the electric wire lead-in part structure according to claim 1.