Rear subframe structure

Patent metadata

Field	Value
Publication number	US-10604186-B2
Application number	US-201615761906-A
Country	US
Kind code	B2
Filing date	Nov 2, 2016
Priority date	Nov 10, 2015
Publication date	Mar 31, 2020
Grant date	Mar 31, 2020

Abstract

A rear subframe structure is provided with a rear subframe configured such that a front cross member, a rear cross member, a pair of left and right upper side members, and a pair of left and right lower side members are connected; and a vehicle-body mounting portion formed on each of both ends of the front cross member, and on each of rear ends of the upper side members. The rear subframe further includes a vertical-wall-shaped pillar portion held and fixed between a lateral portion of the front cross member in the vehicle width direction and the upper side member, and extending in the vehicle width direction. A lower portion of the pillar portion is connected to the lower side member, an upper-arm support portion is formed on an upper portion of the pillar portion, and a lower-arm support portion is formed on a lower portion of the pillar portion.

First claim

The invention claimed is:

1. A rear subframe structure, comprising:
a rear subframe configured such that a front cross member extending in a vehicle width direction, a rear cross member extending in the vehicle width direction on a rear side of the front cross member, a pair of left and right upper side members extending in a vehicle front-rear direction, and a pair of left and right lower side members extending in the vehicle front-rear direction are connected in a substantially grid pattern in a plan view of a vehicle;
a vehicle-body mounting portion formed on each of both ends of the front cross member in the vehicle width direction, and on each of rear ends of the upper side members; and
a vertical-wall-shaped pillar portion held and fixed between a lateral portion of the front cross member in the vehicle width direction and the upper side member, and extending in the vehicle width direction, wherein
a lower portion of the vertical-wall-shaped pillar portion is connected to the lower side member, and
an upper-arm support portion is formed on an upper portion of the vertical-wall-shaped pillar portion, and a lower-arm support portion is formed on a lower portion of the vertical-wall-shaped pillar portion.

2. The rear subframe structure according to claim 1 , wherein
the upper-arm support portion includes an upper arm support bracket, and
the upper arm support bracket sandwiches the vertical-wall-shaped pillar portion in cooperation with the front cross member, and connects between a front portion of the upper side member and the vertical-wall-shaped pillar portion.

3. The rear subframe structure according to claim 1 , wherein
the vertical-wall-shaped pillar portion includes a rear plate which forms the upper-arm support portion, and a front plate which forms the lower-arm support portion, and the vertical-wall-shaped pillar portion is formed into a shape of a closed section by the rear plate and the front plate,
an upper portion of the rear plate is directly connected to the front cross member, and
the lower-arm support portion is constituted by a lower portion of the front plate and a lower portion of the front cross member.

Assignees

• Mazda Motor

Inventors

• Tanaka Masaaki
• Komiya Katsuyuki

Classifications

• B60G2206/60

  Subframe construction · CPC title

• B60G2204/15

  Mounting of subframes · CPC title

• B60G7/02

  Attaching arms to sprung part of vehicle {(B60G7/006 takes precedence)} · CPC title

• B60G99/002

  Suspension details of the suspension of the vehicle body on the vehicle chassis · CPC title

• B62D21/11 Primary

  with resilient means for suspension {, e.g. of wheels or engine; sub-frames for mounting engine or suspensions} · CPC title