Upper arm structure of suspension device

Patent metadata

Field	Value
Publication number	US-2020307331-A1
Application number	US-201816770516-A
Country	US
Kind code	A1
Filing date	Dec 6, 2018
Priority date	Dec 8, 2017
Publication date	Oct 1, 2020
Grant date	—

Abstract

A suspension device according to one embodiment of the present disclosure which is equipped with an upper arm which is supported by a knuckle of the vehicle wheel so as to be capable of oscillation, and also supported by a side member which extends in the vehicle front-rear direction so as to be capable of oscillation, wherein: the upper arm has a tip end section positioned at the outside end in the vehicle widthwise direction, and also has arm sections which fork from the tip end section toward the inside in the vehicle widthwise direction; and the upper arm is formed in a manner such that the cross-sectional area of one arm section is greater than the cross-sectional area of the other arm section.

First claim

1 . An upper arm structure of a suspension device, the upper arm structure comprising: an upper arm configured to be swingably supported by a knuckle of a wheel, the upper arm being configured to be swingably supported by a side member extending in a vehicle front-rear direction,
wherein the upper arm includes:
a distal end portion located at an end portion on an outside in the vehicle width direction; and
arm portions bifurcated, from the distal end portion, inward in the vehicle width direction, and
wherein a cross-sectional area of one arm portion of the bifurcated arm portions is larger than a cross-sectional area of the other arm portion.

2 . The upper arm structure of the suspension device according to claim 1 ,
wherein a base end portion of each arm portion is configured to be swingably supported by a bracket connected to the side member, and wherein a rebound stopper is provide below the one arm portion in a vertical direction, the rebound stopper being abuttable against the one arm portion during swinging.

3 . The upper arm structure of the suspension device according to claim 1 ,
wherein the one arm portion is an arm portion on a rear side in the vehicle front-rear direction.

4 . The suspension device comprising:
the upper arm structure according to claim 1 ; a lower arm configured to be swingably supported by the knuckle, the lower arm being configured to be swingably supported by a suspension cross member extending in the vehicle width direction; a shock absorber provided between the lower arm and the side member; a leaf spring disposed laterally in the vehicle width direction, the leaf spring having an end portion disposed on the lower arm; a transmission unit configured to transmit a force from the leaf spring to the suspension cross member; and a connection member configured to connect the suspension cross member to the side member, wherein the shock absorber is configured to exert a force to the side member from an outside of the vehicle, and wherein the transmission unit is positioned on an inside of the vehicle relative to the side member.

Assignees

• Isuzu Motors Ltd

Inventors

• Senoo Daisuke
• Itou Atsushi

Classifications

• B60G2204/4302

  for fixing suspension arm on the vehicle body or chassis · CPC title

• B60G2204/121

  Mounting of leaf springs · CPC title

• B60G3/20

  all arms being rigid · CPC title

• B60G2206/50

  Constructional features of wheel supports or knuckles, e.g. steering knuckles, spindle attachments · CPC title

• B60G7/001 Primary

  Suspension arms, e.g. constructional features (B60G7/006 takes precedence) · CPC title