# US 12,191,743 B2 · Vehicle drive device, motor casing for vehicle drive device, and manufacturing method of the same

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- Number: US 12,191,743 B2
- Document ID: US12191743B2
- Status: Granted
- Kind: B2
- Application number: 17/655,659
- Filed: 2022-03-21
- Published: 2022-10-06
- Granted: 2025-01-07
- Earliest claimed: 2021-03-30
- Assignees: Toyota Jidosha Kabushiki Kaisha
- Applicants: Toyota Jidosha Kabushiki Kaisha
- Inventors: Hiroyuki Tateno; Hidetomo Shiota; Naoya Yamamoto; Masahiro Tanae
- Web page: https://patentgrep.com/patent/US12191743B2

## CPC

- H02K 5/203: {specially adapted for liquids, e.g. cooling jackets}
- B22C 9/22: Moulds for peculiarly-shaped castings
- B22C 11/00: Moulding machines characterised by the relative arrangement of the parts of same
- B60K 1/00: Arrangement or mounting of electrical propulsion units (B60K7/00 takes precedence; arrangement or mounting of plural diverse prime-movers for mutual or common propulsion B60K6/00)
- H02K 9/19: for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
- H02K 15/14: Casings; Enclosures; Supports
- B60K 2001/006: {the electric motors}
- H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53})
- B22C: FOUNDRY MOULDING (moulding refractory materials in general B28B)
- B60K: ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES

## Abstract

A motor casing of cast metal used for a vehicle drive device, comprising an equipment mounting seat provided on a top part, an oil cooler connection seat, and a longitudinal hole opened in the oil cooler connection seat, wherein a seat surface of the equipment mounting seat is inclined to get higher from one side to the other, and the longitudinal hole is inclined to get higher from one side to the other in parallel to the seat surface.

## Claims

### Claim 1

A motor casing of cast metal which is used for a vehicle drive device mounted on a vehicle, comprising:
an equipment mounting seat provided on the top of the motor casing,
an oil cooler connection seat, and
a cast hole opened in the oil cooler connection seat, wherein:
the equipment mounting seat has an inclined seat surface so to get higher from one side toward the other, and
the cast hole is inclined from the one side toward the other in parallel to the seat surface of the equipment mounting seat.

### Claim 2 (depends on 1)

The motor casing according to claim 1, wherein a machined hole is extended from an interior in a direction to intersect with the cast hole so to communicate with the cast hole and has a depth shallower than that of the cast hole.

### Claim 3 (depends on 2)

The motor casing according to claim 2, wherein:
the oil cooler connection seat is provided on a front of the motor casing,
the one side is a vehicle front and the other side is a vehicle rear,
the vehicle drive device is mounted in a front compartment which is covered with a hood inclined so to get higher from the vehicle front toward the vehicle rear, and
when the vehicle drive device is mounted in the front compartment, the seat surface of the equipment mounting seat is inclined to get higher from the vehicle front toward the vehicle rear along the inclination of the hood.

### Claim 4

A vehicle drive device mounted in a front compartment which is covered with a hood inclined to get higher from a vehicle front toward a vehicle rear, comprising:
a motor casing including:
an equipment mounting seat provided on a top part,
an oil cooler connection seat provided on a front part,
a cast hole opened in the oil cooler connection seat, and
a machined hole which is in communication with the cast hole from an
interior and shallower than a depth of the cast hole;
a vehicle control device attached to the top of a seat surface of the equipment mounting seat;
an oil cooler attached to the oil cooler connection seat; and
a cooling pipe connected to the machined hole, wherein:
the seat surface of the equipment mounting seat of the motor casing is inclined to get higher from the front toward the rear, and the cast hole is inclined to get higher from the front toward the rear in parallel to the seat surface of the equipment mounting seat, and
when the vehicle drive device is mounted in the front compartment, an upper surface of the vehicle control device is inclined to get higher from the vehicle front toward the vehicle rear along the inclination of the hood.