SUSPENSION DEVICE FOR NON-STEERED DRIVING WHEEL INCORPORATING IN-WHEEL MOTOR

• US 20180334001A1
• Filed: 05/15/2018
• Published: 11/22/2018
• Est. Priority Date: 05/16/2017
• Status: Abandoned Application

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: KATO, Yoshihisa, ADACHI, Satoshi
• Application Number:
  US15/980,091
• Publication Number:
  US 20180334001A1
• Time in Patent Office: Days
• CPC Class Codes: B60G 15/062 the spring being arranged around the damper B60G15/061, B60G15/067, B60G15/07 take precedence
• CPC Class Codes: B60G 2200/132 with a single trailing arm
• CPC Class Codes: B60G 2200/182 with one longitudinal arm or rod and lateral rods
• CPC Class Codes: B60G 2200/446 Non-steerable wheels
• CPC Class Codes: B60G 2202/31 with the spring arranged around the damper, e.g. MacPherson strut
• CPC Class Codes: B60G 2202/42 Electric actuator
• CPC Class Codes: B60G 2204/12 Mounting of springs or dampers
• CPC Class Codes: B60G 2204/148 on the unsprung part of the vehicle, e.g. wheel knuckle or rigid axle
• CPC Class Codes: B60G 2204/1482 on rigid axle by elastic mount
• CPC Class Codes: B60G 2204/182 Electric motor on wheel support
• CPC Class Codes: B60G 2204/41 Elastic mounts, e.g. bushings
• CPC Class Codes: B60G 2204/422 Links for mounting suspension elements
• CPC Class Codes: B60G 2206/012 Hollow or tubular elements
• CPC Class Codes: B60G 2206/16 the arm having a U profile and/or made of a plate
• CPC Class Codes: B60G 2300/122 Trikes
• CPC Class Codes: B60G 2300/45 Rolling frame vehicles
• CPC Class Codes: B60G 2300/50 Electric vehicles; Hybrid vehicles
• CPC Class Codes: B60G 3/14 the arm being rigid
• CPC Class Codes: B60G 3/20 all arms being rigid
• CPC Class Codes: B60G 7/008 Attaching arms to unsprung part of vehicle B60G7/005, B60G7/006 take precedence
• CPC Class Codes: B60K 2007/0038 : the motor moving together with the wheel axle
• CPC Class Codes: B60K 2007/0092 : the motor axle being coaxial to the wheel axle
• CPC Class Codes: B60K 7/0007 : the motor being electric
• CPC Class Codes: B62K 2005/001 : Suspension details for cycles with three or more main road wheels
• CPC Class Codes: B62K 5/05 : characterised by a single rear wheel
• CPC Class Codes: B62K 5/08 : with steering devices acting on two or more wheels
• CPC Class Codes: B62K 5/10 : with means for inwardly inclining the vehicle body on bends

Abstract

A suspension device for a non-steered driving wheel in which an in-wheel motor for driving the driving wheel is incorporated in a wheel carrier and which includes suspension arm pivotally supported on a vehicle body at one end and connected at the other end to the wheel carrier via at least two elastic bushing devices. A principal elastic axis which is determined by the at least two elastic bushing devices and extends vertically passes through a grounding area of the driving wheel.

Claims

1. A suspension device for a non-steered driving wheel which is rotationally driven by an in-wheel motor incorporated in a wheel carrier, the suspension device comprising at least one suspension arm pivotally supported at one end on a vehicle body of a vehicle and connected to the wheel carrier on the other end side, wherein

the at least one suspension arm is connected to the wheel carrier via at least two elastic hushing devices, and a principal elastic axis which is determined by the at least two elastic bushing devices and extends vertically passes through a grounding area of the driving wheel.

2. The suspension device for a non-steered driving wheel according to claim 1, wherein the non-steered driving wheel has an axle rotatably supported by the wheel carrier via a bearing, and the principal elastic axis passes through an area of the axle as seen in a lateral direction of the vehicle.

3. The suspension device for a non-steered driving wheel according to claim 1,

wherein the at least one suspension arm is one suspension arm extending in a longitudinal direction of the vehicle, and the one suspension arm is connected to the wheel carrier via elastic bush devices at a plurality of positions including two positions spaced apart in the longitudinal direction of the vehicle and one position vertically spaced from the two positions.

4. The suspension device for a non-steered driving wheel according to claim 1, wherein the at least one suspension arm includes a plurality of suspension arms extending in a lateral direction of the vehicle, and the plurality of suspension arms are connected to the wheel carrier via the elastic bushing devices.

5. The suspension device for a non-steered driving wheel according to claim 1, wherein the suspension device includes a MacPherson strut integrally connected to the wheel carrier at the lower end, and one of the at least two elastic bush devices that determines the principal elastic axis is interposed between an upper end of the MacPherson strut and the vehicle body.

6. The suspension device for a non-steered driving wheel according to claim 1, wherein the vehicle includes a pair of the non-steered driving wheels spaced laterally and a vehicle tilting device configured to tilt the vehicle to a turning inner side when the vehicle turns, and the vehicle tilting device includes a swing member that swings about a swing axis extending in the front-rear direction, an actuator that swings the swing member about the swing axis, and a pair of connecting rods pivotally connected to the swing member at upper end pivot points and pivotally connected to the corresponding wheel carriers at lower end pivot points on both lateral sides with respect to the swing axis.