# US 12,109,859 B2 · Electric vehicle

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- Number: US 12,109,859 B2
- Document ID: US12109859B2
- Status: Granted
- Kind: B2
- Application number: 18/292,728
- Filed: 2022-06-29
- Published: 2024-08-08
- Granted: 2024-10-08
- Earliest claimed: 2021-07-29
- Assignees: Daimler Truck AG
- Applicants: Daimler Truck AG
- Inventors: Kotaro Yamamoto; Senthil Arumugam; Gowtham Buthan
- Web page: https://patentgrep.com/patent/US12109859B2

## CPC

- B60G 11/113: Mountings on the axle (B60G11/107 takes precedence)
- 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)
- B60G 11/04: arranged substantially parallel to the longitudinal axis of the vehicle
- B60G 11/10: characterised by means specially adapted for attaching the spring to axle or sprung part of the vehicle
- B60G 2202/112: longitudinally arranged
- B60G 2204/121: Mounting of leaf springs
- B60G 2204/18: Mounting of vehicle engines
- B60G 2204/43: Fittings, brackets or knuckles
- B60G 2204/4306: Bracket or knuckle for rigid axles, e.g. for clamping
- B60G 2300/50: Electric vehicles; Hybrid vehicles
- B60K 2001/001: {one motor mounted on a propulsion axle for rotating right and left wheels of this axle}
- B60Y 2200/14: Trucks; Load vehicles, Busses
- B60G: VEHICLE SUSPENSION ARRANGEMENTS (air-cushion vehicles B60V; {cycle suspensions B62K25/00})
- 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
- B60Y: INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY

## Abstract

An electric vehicle includes a ladder frame and a driving unit, the driving unit including a motor that generates driving force to be transmitted to an axle of the electric vehicle and a transmission mechanism that shifts the driving force passed from the motor. The electric vehicle further includes a motor housing that accommodates the motor of the driving unit, a leaf spring that suspends the axle from the electric vehicle, a first coupling part that couples the ladder frame to the motor housing, and a second coupling part that is integrated with the first coupling part and that couples the ladder frame to an end part of the leaf spring. The second coupling part has a rib-shaped portion that protrudes outward in the vehicle width direction and that is connected to the end part the leaf spring.

## Claims

### Claim 1

An electric vehicle comprising a ladder frame and a driving unit, the driving unit comprising a motor that generates driving force to be transmitted to an axle of the electric vehicle and a transmission mechanism that shifts the driving force passed from the motor, the electric vehicle further comprising:
a motor housing that accommodates the motor of the driving unit;
a leaf spring that suspends the axle from the electric vehicle;
a first coupling part that couples the ladder frame to the motor housing; and
a second coupling part that is integrated with the first coupling part and that couples the ladder frame to an end part of the leaf spring, wherein
the second coupling part has a rib-shaped portion that protrudes outward in the vehicle width direction and that is connected to the end part the leaf spring.

### Claim 2 (depends on 1)

The electric vehicle according to claim 1, wherein the first coupling part comprises a plate member attached to a web outer face of a side rail of the ladder frame, and a bracket part that extends downward from a flange lower face of the side rail and that is connected to the motor housing.

### Claim 3 (depends on 2)

The electric vehicle according to claim 2, wherein:
the first coupling part further comprises a pair of the plate members; and
the rib-shaped part is sandwiched between the pair of the plate members.

### Claim 4 (depends on 1)

The electric vehicle according to claim 1, wherein a position where the bracket member is coupled to the motor housing in a vehicle longitudinal direction is substantially the same as a position where the rib-shaped part is coupled to the leaf spring.

### Claim 5 (depends on 1)

The electric vehicle according to claim 1, wherein the rib-shaped part comprises a pair of planer portions spaced apart in a vehicle longitudinal direction and a connecting part that connects the planer portions with each other.

### Claim 6 (depends on 1)

The electric vehicle according to claim 1, wherein the first coupling part comprises a second rib-shaped part formed into a shape protruding outward in the vehicle width direction.