Vehicle-body lower face structure

Patent metadata

Field	Value
Publication number	US-10899388-B2
Application number	US-201916362164-A
Country	US
Kind code	B2
Filing date	Mar 22, 2019
Priority date	Mar 23, 2018
Publication date	Jan 26, 2021
Grant date	Jan 26, 2021

Abstract

An arm cover comprises a main part and a front part. These parts are configured such that when the rear suspension takes a standard vehicle-weight position, these parts are respectively inclined rearwardly and downwardly, wherein an angle of inclination of the inclined front part is smaller than that of the inclined main part. When the rear suspension takes the standard vehicle-weight position, a front edge of the front part is located at a higher level than a bottom face portion of a under cover, and when the rear suspension takes a rebound position, the front edge of the front part is located at a position which is higher than a level of the bottom face portion of the under cover and close to a rear end portion of the under cover.

First claim

What is claimed is:

1. A vehicle-body lower face structure, comprising:
a torsion beam type of rear suspension comprising a pair of right-and-left trailing arms and a torsion beam connecting the trailing arms;
a floor under cover for airflow straightening attached to a portion of a vehicle body in front of the rear suspension so as to cover a vehicle-body lower face;
an arm cover for airflow straightening attached to a lower portion of each of the trailing arms of the rear suspension so as to cover a lower face of the trailing arm,
wherein said arm cover comprises a main part and a front part which is provided in front of the main part, and the main part and the front part of the arm cover are configured such that when said rear suspension takes a standard vehicle-weight position, both of the main part and the front part are respectively inclined rearwardly and downwardly, wherein an angle of inclination of said rearwardly-and-downwardly inclined front part is smaller than an angle of inclination of said rearwardly-and-downwardly inclined main part of the arm cover.

2. The vehicle-body lower face structure of claim 1 , wherein
said arm cover attached to the lower portion of the trailing arm is configured such that when the rear suspension takes the standard vehicle-weight position, a front edge of said front part of the arm cover is located at a higher level than a bottom face portion of said floor under cover, and when the rear suspension takes a rebound position, the front edge of the front part of the arm cover is located at a position which is higher than a level of the bottom face portion of the floor under cover and close to a rear end portion of the floor under cover.

3. The vehicle-body lower face structure of claim 1 , wherein
said arm cover is configured such that said main part and said front part are positioned below a line connecting a pivot point where a font end portion of said trailing arm is pivotally supported and a rear-end upper portion of the arm cover, said main part of the arm cover which faces a spring supporting part of a spring seat which supports a lower portion of a suspension spring is configured to be linear, and said front part of the arm cover is configured to be curved forwardly and downwardly.

4. The vehicle-body lower face structure of claim 2 , wherein
said arm cover is configured such that said main part and said front part are positioned below a line connecting a pivot point where a font end portion of said trailing arm is pivotally supported and a rear-end upper portion of the arm cover, said main part of the arm cover which faces a spring supporting part of a spring seat which supports a lower portion of a suspension spring is configured to be linear, and said front part of the arm cover is configured to be curved forwardly and downwardly.

5. The vehicle-body lower face structure of claim 1 , wherein
said arm cover further comprises a rear part of said arm cover which is provided in back of said main part is configured to be curved rearwardly and upwardly.

6. The vehicle-body lower face structure of claim 2 , wherein
said arm cover further comprises a rear part of said arm cover which is provided in back of said main part is configured to be curved rearwardly and upwardly.

7. The vehicle-body lower face structure of claim 3 , wherein
said arm cover further comprises a rear part of said arm cover which is provided in back of said main part is configured to be curved rearwardly and upwardly.

8. The vehicle-body lower face structure of claim 4 , wherein
said arm cover further comprises a rear part of said arm cover which is provided in back of said main part is configured to be curved rearwardly and upwardly.

Assignees

• Mazda Motor

Inventors

• Nishida Shuhei
• Kuga Yoshiatsu
• Takahashi Hiroyuki
• Fukamachi Yosuke
• Okamoto Satoshi

Classifications

• B60G2204/4308

  Protecting guards, e.g. for rigid axle damage protection · CPC title

• B62D35/02 Primary

  Streamlining the undersurfaces {(B62D35/005, B62D35/007, B62D35/008 take precedence)} · CPC title

• B60G21/106

  transversally · CPC title

• B62D21/155 Primary

  Sub-frames or underguards · CPC title

• B60G2206/10

  Constructional features of arms · CPC title