EP0253383A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Double link type suspension system
Assignee: Nissan Motor Co Ltd
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Filing: 1987-07-15
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Granted: —
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Expires: 2007-07-15
Abstract
Abstract A double link type front suspension system (10) for an automotive vehicle of the front engine front drive type or the four wheel drive type. The suspension system is comprised of upper (40) and lower (28) control arms for swingably connecting a knuckle (12) for rotatably supporting a front wheel (14) to a vehicle body. A curved extension bracket (32) is provided to rotatably connecting the knuckle upper section (12b) with the upper control arm (40). The extention member (32) is movably connected at its upper end section (32b) with the outboard end section of the upper control arm (40) and relatively rotatably connected at its lower end section (32a) with the knuckle upper section (12b). The relative rotation between the extension member (32) and the knuckle upper section (12b) is made around a straight line (steering axis) (36) passing through a ball joint (26) for connecting the knuckle lower section (12a) and the lower control arm (28), thereby making possible to set the steering axis regardless of the upper control arm.
Inventors
- 👤 Toshihiko Kakimoto
- 👤 Takuya Murakami
- 👤 Shinichi Morita
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 02:31
CPC Classifications
B; B62; B62D; B62D17/00; B60; B60G; B60G15/00; B60G15/02; B60G15/06; B60G15/062; B60G3/00; B60G3/18; B60G3/20; B60G3/26; B60G3/265; B60G2200/00; B60G2200/10; B60G2200/17
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
128 words
A double link suspension system for a vehicle, comprising: a knuckle for rotatably supporting a wheel for the vehicle; a lower control arm having a first end section movably connected to a lower end section of said knuckle by a first joint, and a second end section movably connected to side of a vehicle body; an extension member having a first end section connected to an upper section of said knuckle, and a second end section, said extension member being relatively rotatable to said knuckle upper end section around a straight line passing through said first joint; and an upper control arm having a first end section movably connected to said extension member second end section, and a second end section movably connected to the vehicle body side.
Claim 2
Dependent Claim
128 words
A double link suspension system for a vehicle, comprising: a knuckle for rotatably supporting a wheel for the vehicle; a lower control arm having a first end section movably connected to a lower end section of said knuckle by a first joint, and a second end section movably connected to side of a vehicle body; an extension member having a first end section connected to an upper section of said knuckle, and a second end section, said extension member being relatively rotatable to said knuckle upper end section around a straight line passing through said first joint; and an upper control arm having a first end section movably connected to said extension member second end section, and a second end section movably connected to the vehicle body side.
Claim 3
Dependent Claim
23 words
A double link type suspension system as claimed in Claim 1, further comprising a shock absorber disposed generally vertically near said extension member.
Claim 4
Dependent Claim
26 words
A double link type suspension system as claimed in Claim 2, wherein said shock absorber has an upper end section connected to the vehicle body side.
Claim 5
Dependent Claim
23 words
A double link type suspension system as claimed in Claim 1, wherein said vehicle is of a front engine front wheel drive type.
Claim 6
Dependent Claim
21 words
A double link type suspension system as claimed in Claim 1, wherein said vehicle is of a four wheel drive type.
Claim 7
Dependent Claim
43 words
A double link type suspension system as claimed in Claim 1, wherein said wheel has an axle shaft connected through a constant velocity joint to a drive shaft which is driven by an engine, said axle shaft being rotatably journalled by said knuckle.
Claim 8
Dependent Claim
27 words
A double link type suspension system as claimed in Claim 1, wherein said first joint is a ball joint whose axis is aligned with said straight line.
Claim 9
Dependent Claim
107 words
A double link type suspension system as claimed in Claim 7, whrein said knuckle upper section and said extension member are connected by a second joint through which said straight line passes, and said extension member second end section and said upper control arm first end section are connected by a third joint, said third joint being separate from a vertical plane containing a point in said upper control arm through which point said straight line passes, said third joint being located between said first vertical plane and a wheel vertical plane containing center line of said wheel and perpendicular to axis of rotation of said wheel.
Claim 10
Dependent Claim
20 words
A double link type suspension system as claimed in Claim 8, wherein said straight line serves as a steering axis.
Claim 11
Dependent Claim
50 words
A double link type suspension system as claimed in Claim 9, whrein said ball joint includes a ball stud secured to said knuckle lower section, said ball stud having an axis aligned with said straight line, and a retainer for retaining said ball stud, secured to said lower control arm.
Claim 12
Dependent Claim
25 words
A double link type suspension system as claimed in Claim 8, wherein said point in said upper control arm is separate from said third joint.
Claim 13
Dependent Claim
36 words
A double link type suspension system as claimed in Claim 9, wherein said straight line intersects said wheel vertical plane at a point above a plane at which said wheel is in contact with road surface.
Claim 14
Dependent Claim
35 words
A double link type suspension system as claimed in Claim 12, whrein said straight line intersects said plane at a point outside of said wheel vertical plane in a laterial direction of the vehicle body.
Claim 15
Dependent Claim
60 words
A double link type suspension system as claimed in Claim 8, wherein said second joint includes a shaft portion formed at said knuckle upper section and having an axis aligned with said straight line, and a cylindrical portion formed at said extension member first end section and disposed around said shaft portion to be relatively rotatable to said shaft portion.
Claim 16
Dependent Claim
28 words
A double link type suspension system as claimed in Claim 14, wherein said second joint includes a cylindrical bushing interposed between said shaft portion and said cylindrical portion.
Claim 17
Dependent Claim
50 words
A double link type suspension system as claimed in Claim 8, whrein said second joint includes first and second ball joints whose axes are aligned with each other and aligned with said straight line, each ball joint movably connecting said knuckle upper section and said extension member first end section.
Claim 18
Dependent Claim
64 words
A double link type suspension system as claimed in Claim 8, wherein said second joint includes first and second annular ball bearings whose axes are aligned with each other and aligned with said straight line, each ball bearing being intrposed between an elongate member on side of said extension member first end section and a cylindrical portion on side of said knuckle upper section.
Claim 19
Dependent Claim
26 words
A double link type suspension system as claimed in Claim 3, wherein said shock absorber has a lower end section connected to said lower control arm.
Claim 20
Dependent Claim
35 words
A double link type suspension system as claimed in Claim 8, wherein said third joint includes an elastomeric bushing interposed between said extension member second end section and said upper control arm first end section.
Claim 21
Dependent Claim
43 words
A double link type suspension system as claimed in Claim 8, wherein said third joint is positioned separate from an upper-most section of said wheel in a vehicle fore-and-aft direction in a plane perpendicular to axis of rotation of said wheel is perpendicular.
Claim 22
Dependent Claim
28 words
A double link type suspension system as claimed in Claim 20, wherein said third joint is positioned forward of said wheel upper-most section relative to the vehicle body.
Claim 23
Dependent Claim
28 words
A double link type suspension system as claimed in Claim 20, wherein said third joint is positioned rearward of said wheel upper-most section relative to the vehicle body.
Claim 24
Dependent Claim
49 words
A double link type suspension system as claimed in Claim 20, wherein said third joint includes an elastomeric bushing interposed between said extension member second end section and said upper control arm first end section, said elastomeric bushing being located below a top level of said wheel upper-most section.
Claim 25
Dependent Claim
82 words
A double link type suspension system as claimed in Claim 8, wherein said third joint includes first and second elastomeric bushings which are mounted on a common rod member extending generally in a vehicle fore-and-aft direction and axially separate from each other, said upper control arm first end section being mounted on said first and second elastomeric bushings, said extension member second end section being securely connected to a part of said common rod member between said first and second elastomeric bushings.
Claim 26
Dependent Claim
65 words
A double link type suspension system as claimed in Claim 24, wherein said upper control arm includes first and second elongate sections which are intergrally connected with each other, each elongate section having a first end portion formed with a cylindrical part mounted on said one of said first and second elastomeric bushings, and a second end portion elastically connected to the vehicle body side.
Claim 27
Dependent Claim
51 words
A double link type suspension system claimed in Claim 2, wherein said extension member first end section is securely attached to a cylinder outer wall of a shock absorber disposed generally vertical and near said extension member, said shock absorber having a first end section connected to the vehicle body side.
Claim 28
Dependent Claim
31 words
A double link type suspension system as claimed in Claim 26, wherein said shock abosrber has a second end section pivotally connected to said knuckle upper section by a fourth joint.
References Cited (Backward Citations)
No citation records indexed.
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