US20040026836A1 - Vehicle suspension system - Google Patents

Vehicle suspension system Download PDF

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Publication number
US20040026836A1
US20040026836A1 US10/214,872 US21487202A US2004026836A1 US 20040026836 A1 US20040026836 A1 US 20040026836A1 US 21487202 A US21487202 A US 21487202A US 2004026836 A1 US2004026836 A1 US 2004026836A1
Authority
US
United States
Prior art keywords
vehicle
piston rod
end plate
system defined
damper
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US10/214,872
Other languages
English (en)
Inventor
Graham Brookes
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Firestone Industrial Products Co LLC
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to US10/214,872 priority Critical patent/US20040026836A1/en
Assigned to BFS DIVERSIFIED PRODUCTS, LLC reassignment BFS DIVERSIFIED PRODUCTS, LLC ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BROOKES, GRAHAM R.
Priority to CNB038188848A priority patent/CN100455454C/zh
Priority to PL373171A priority patent/PL210716B1/pl
Priority to EP03784860A priority patent/EP1539515B1/en
Priority to DE60324571T priority patent/DE60324571D1/de
Priority to AU2003265334A priority patent/AU2003265334A1/en
Priority to PCT/US2003/023975 priority patent/WO2004014673A1/en
Publication of US20040026836A1 publication Critical patent/US20040026836A1/en
Priority to US11/224,571 priority patent/US7226045B2/en
Assigned to FIRESTONE INDUSTRIAL PRODUCTS COMPANY, LLC reassignment FIRESTONE INDUSTRIAL PRODUCTS COMPANY, LLC ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BFS DIVERSIFIED PRODUCTS, LLC
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/54—Arrangements for attachment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G13/00—Resilient suspensions characterised by arrangement, location or type of vibration dampers
    • B60G13/001—Arrangements for attachment of dampers
    • B60G13/003—Arrangements for attachment of dampers characterised by the mounting on the vehicle body or chassis of the damper unit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/02—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum
    • F16F9/04—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum in a chamber with a flexible wall
    • F16F9/0454—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum in a chamber with a flexible wall characterised by the assembling method or by the mounting arrangement, e.g. mounting of the membrane
    • F16F9/0463—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum in a chamber with a flexible wall characterised by the assembling method or by the mounting arrangement, e.g. mounting of the membrane with separate crimping rings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/02—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum
    • F16F9/04—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum in a chamber with a flexible wall
    • F16F9/05—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum in a chamber with a flexible wall the flexible wall being of the rolling diaphragm type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/10—Type of spring
    • B60G2202/15—Fluid spring
    • B60G2202/152—Pneumatic spring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/30—Spring/Damper and/or actuator Units
    • B60G2202/31—Spring/Damper and/or actuator Units with the spring arranged around the damper, e.g. MacPherson strut
    • B60G2202/314—The spring being a pneumatic spring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/10—Mounting of suspension elements
    • B60G2204/12—Mounting of springs or dampers
    • B60G2204/128—Damper mount on vehicle body or chassis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/10—Mounting of suspension elements
    • B60G2204/12—Mounting of springs or dampers
    • B60G2204/129—Damper mount on wheel suspension or knuckle

Definitions

  • the invention relates to vehicle suspension systems, and in particular, to a combination air spring and damper in which the mounting forces are decoupled from each other on one of the vehicle components to reduce excessive loads on the attachment locations.
  • the present invention provides a vehicle suspension system having a combination damper/air spring in which the damper has a cylinder and a reciprocally mounted piston, with the cylinder being attached to one component of the vehicle and an extended end of the piston rod being attached to a second vehicle component.
  • the air spring surrounds the damper cylinder and the air spring end plate being attached to the same vehicle component as is the piston rod, but at a spaced location therefrom in order to distribute the loads exerted on the damper and air spring to different parts of the vehicle component.
  • the air spring end plate is attached to a leg of the chassis frame channel and the piston rod extends through a hole in the chassis leg and is attached to the web wall of the channel spaced from the end plate attachment.
  • Another aspect of the invention is attaching the damper cylinder and piston rod with a flexible bushing, each consisting of a pair of concentric rigid cylinders having an intervening annulus of elastomeric material providing resilient attachments.
  • Another feature of the invention is to provide an elongated seal to enclose the end plate opening through which the piston rod extends to prevent the escape of air from within the air chamber of the air spring while permitting conical movement of the piston rod with respect to its attachment location to compensate for independent movement of the spaced vehicle components.
  • Still another feature of the invention is providing a rigid canister which extends concentrically about and entraps the flexible bellows of the air spring therein which can be either rigidly or fixedly mounted to the end plate of the air spring or the spaced vehicle component, and which is provided with a flexible sealing skirt to retard the collection of debris and dirt on the damper/air spring combination.
  • a further advantage of the invention is to mount the restraining cylinder by a flexible member which allows the canister to move with the damper/air spring and accommodate larger coning angles of the damper piston rod.
  • a further feature of the invention is to form the restraining canister of a rigid rubber material containing radial reinforcement cords, thereby providing a rigid structure unaffected by the harsh environment which is experienced by the suspension system.
  • Another aspect of the invention is to provide a vehicle suspension system which by separating the attachment loads, provides improved damper tuning, ride isolation from the damper bushing, improved damper bushing durability, and provides an improved ride to the vehicle by reducing the vibration exerted on the chassis by the damper/air spring combination.
  • FIG. 1 is a side elevational view showing the improved vehicle suspension system
  • FIG. 2 is an enlarged fragmentary sectional view of FIG. 1;
  • FIG. 3 is an enlarged fragmentary sectional view of a modified mounting arrangement for the outer restraining canister of the suspension system.
  • FIG. 1 is a side elevational view of the improved vehicle suspension system which is indicated generally at 1 , which includes a pair of spaced vehicle components indicated generally at 2 and 3 , having an air spring/damper combination 5 mounted therebetween.
  • Vehicle components 2 and 3 can be various structural parts of a vehicle and in the preferred embodiment, component 2 is a channel shaped chassis frame member having a web wall 6 and a pair of spaced outwardly extending channel legs 7 and 8 .
  • Lower component 3 could be various components of the wheel assembly.
  • Air spring/damper combination 5 (FIG. 2) includes a damper indicated generally at 10 , having a cylinder 11 containing a fluid such as oil, in which is reciprocally mounted a piston rod 12 .
  • the lower end of cylinder 11 is connected to vehicle component 3 by an elastomeric bushing indicated generally at 14 .
  • Bushing 14 includes inner and outer rigid cylinders 15 and 16 respectively, between which is compressed an annular elastomeric bushing sleeve 17 .
  • a bolt 19 extends through inner cylinder 15 and is secured by a weld, nut or other attachment means to vehicle component 3 .
  • Extended end 20 of piston rod 12 is secured to web wall 6 of vehicle component 2 by a similar bushing assembly having inner and outer rigid metal cylinders 22 and 23 and an intervening elastomeric bushing sleeve 24 , with a bolt 25 extending through inner cylinder 22 for attachment to web wall 6 .
  • Air spring/damper combination 5 further includes a usual air spring 30 which includes a piston 31 which is mounted on and extends about cylinder 11 .
  • a usual air spring 30 which includes a piston 31 which is mounted on and extends about cylinder 11 .
  • One type of mounting would be to form a central bore 33 in air spring piston 31 through which cylinder 11 is slidably mounted and retained by abutment of the end of cylinder 11 against a stepped shoulder 35 formed in piston 31 .
  • a plurality of O-rings 36 may be mounted between bore forming wall 37 and cylinder 11 to prevent the flow of air therebetween.
  • a usual elastomeric bellows 39 is sealingly clamped at one open end by a clamp ring 40 against the upper end of piston 31 with the other open end of bellows 39 being clamped between an annular flange 43 of an end plate 41 and the upper end of a restraining cylinder or canister 44 by another clamp ring 40 to form an internal fluid chamber 32 .
  • End plate 41 is formed with an enlarged central opening 45 defined by an annular upstanding flange 46 with piston rod 12 extending through opening 45 .
  • Flange 46 extends through a larger opening 47 formed in channel leg 7 of vehicle component 2 .
  • end plate 41 is connected to vehicle component 2 and in particular to channel leg 7 thereof, so as to be connected to component 2 at a different location than is the connection of piston rod 12 with vehicle component 2 .
  • This spaced connection separates the two forces, i.e., the force on the damper from the force on the air spring. This reduces excessive loads in either mounting system and hence, reduction in bracket and localized chassis forces that are experienced when utilizing a common mounting location.
  • End plate 41 is connected to channel leg 7 by bolts, welds, or other types of attachments.
  • the diameter of opening 45 is preferably sufficiently greater than the diameter of piston rod 12 to permit conical movement of piston rod 12 therein due to the independent movement of vehicle components 2 and 3 , without rod 12 contacting flange 46 .
  • a flexible seal indicated generally at 50 closes end wall opening 45 to prevent the escape of air contained within internal fluid chamber 32 into the surrounding atmosphere, and also provides for conical movement of piston rod 12 with respect to air spring 30 .
  • Seal 50 includes a flexible air impervious sleeve 53 which is clamped to flange 46 by a clamp ring 54 and to a retaining collar 55 which is mounted on extended end 20 of piston rod 12 by another clamp ring 57 .
  • Collar 55 is attached by welding or a slip-fit connection to rod end 20 or to outer cylinder 23 of the upper mounting bushing.
  • a plurality of O-rings 58 may be mounted between collar 55 and piston rod 12 to provide a fluid tight seal therewith.
  • substantially rigid restraining canister 44 surrounds air spring/damper combination 5 .
  • Canister 44 preferably is secured to end plate 41 and particularly to flange 43 , by clamp ring 40 as shown in FIG. 2.
  • Rigid canister 44 can be formed of a rigid material such as metal, plastic, or other synthetics or of a relatively stiff rubber having internal radially extending reinforcing cords 61 , such as shown in FIG. 3.
  • Canister 44 preferably extends to below piston 31 and may have a dust seal 63 mounted on the lower open end 64 of the canister to prevent the accumulation of dirt and other debris around the air spring/damper combination.
  • Seal 63 preferably has an inwardly extending rigid skirt 65 connected to the lower open end of canister 44 , with a flexible brush 66 extending between an open end 68 of the skirt and cylinder 11 .
  • This flexible brush 66 also permits limited conical movement of cylinder 11 within open end 68 of skirt 65 .
  • FIG. 3 A slightly modified canister mounting arrangement is shown in FIG. 3 in which canister 44 is resiliently mounted by an elastomeric sleeve 70 or other type of resilient connection, to flange 43 of end plate 41 by clamp ring 40 .
  • This flexible mounting provides for additional movement of restraining canister 44 and air spring/damper combination 5 without damaging any of the protected components, and preferably will be used when canister 44 is formed of a relatively rigid and stiff material.
  • the flexible canister preferably will be clamped directly to end plate 41 .

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Body Suspensions (AREA)
  • Fluid-Damping Devices (AREA)
US10/214,872 2002-08-07 2002-08-07 Vehicle suspension system Abandoned US20040026836A1 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
US10/214,872 US20040026836A1 (en) 2002-08-07 2002-08-07 Vehicle suspension system
PCT/US2003/023975 WO2004014673A1 (en) 2002-08-07 2003-08-01 Vehicle suspension system
DE60324571T DE60324571D1 (de) 2002-08-07 2003-08-01 Fahrzeugaufhängungssystem
PL373171A PL210716B1 (pl) 2002-08-07 2003-08-01 Układ zawieszenia pojazdu
EP03784860A EP1539515B1 (en) 2002-08-07 2003-08-01 Vehicle suspension system
CNB038188848A CN100455454C (zh) 2002-08-07 2003-08-01 车辆悬架系统
AU2003265334A AU2003265334A1 (en) 2002-08-07 2003-08-01 Vehicle suspension system
US11/224,571 US7226045B2 (en) 2002-08-07 2005-09-12 Vehicle suspension system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10/214,872 US20040026836A1 (en) 2002-08-07 2002-08-07 Vehicle suspension system

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US11/224,571 Continuation US7226045B2 (en) 2002-08-07 2005-09-12 Vehicle suspension system

Publications (1)

Publication Number Publication Date
US20040026836A1 true US20040026836A1 (en) 2004-02-12

Family

ID=31494733

Family Applications (2)

Application Number Title Priority Date Filing Date
US10/214,872 Abandoned US20040026836A1 (en) 2002-08-07 2002-08-07 Vehicle suspension system
US11/224,571 Expired - Lifetime US7226045B2 (en) 2002-08-07 2005-09-12 Vehicle suspension system

Family Applications After (1)

Application Number Title Priority Date Filing Date
US11/224,571 Expired - Lifetime US7226045B2 (en) 2002-08-07 2005-09-12 Vehicle suspension system

Country Status (7)

Country Link
US (2) US20040026836A1 (zh)
EP (1) EP1539515B1 (zh)
CN (1) CN100455454C (zh)
AU (1) AU2003265334A1 (zh)
DE (1) DE60324571D1 (zh)
PL (1) PL210716B1 (zh)
WO (1) WO2004014673A1 (zh)

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US20060208402A1 (en) * 2005-03-21 2006-09-21 Arvinmeritor Technology, Llc Air spring protector
US20060208404A1 (en) * 2005-03-16 2006-09-21 Bfs Diversified Products, Llc Multiple load path air spring assembly
US7175165B1 (en) * 2005-05-10 2007-02-13 Link Mfg., Ltd. Air spring and shock absorber assembly for use in suspension systems
US20070089951A1 (en) * 2005-10-20 2007-04-26 Peter Skiba Air spring protective sleeve
WO2007090480A1 (de) * 2006-02-07 2007-08-16 Continental Aktiengesellschaft LUFTFEDER MIT AUßENFÜHRUNG
US20080054584A1 (en) * 2006-08-30 2008-03-06 Bfs Diversified Products, Llc Protective curtain for vehicle suspension components
US20080265475A1 (en) * 2005-03-21 2008-10-30 Keeney Christopher S Air spring protector
EP2287491A1 (de) * 2009-08-21 2011-02-23 Continental Teves AG & Co. oHG Luftfeder
CN102049985A (zh) * 2009-11-02 2011-05-11 株式会社万都 空气悬架
WO2011124325A3 (de) * 2010-04-10 2013-02-28 Audi Ag Luftfeder
US20130147099A1 (en) * 2010-08-20 2013-06-13 Continental Teves Ag & Co. Ohg Pneumatic spring strut having a resilient piston bearing
JP2014126079A (ja) * 2012-12-25 2014-07-07 Showa Corp エアばね付ダンパ
CN105172911A (zh) * 2015-09-15 2015-12-23 广德高斯特车辆部件有限公司 车辆驾驶室减震用活塞式橡胶空气悬挂总成
US20160230835A1 (en) * 2015-02-06 2016-08-11 Tenneco Automotive Operating Company Inc. Secondary dampening assembly for shock absorber
US9605726B2 (en) 2015-02-03 2017-03-28 Tenneco Automotive Operating Company Inc. Secondary dampening assembly for shock absorber
US9890829B2 (en) * 2016-04-14 2018-02-13 Air Spring Protection Systems, LLC Protective sheet for vehicle suspension systems and method of installation thereof
US9988475B2 (en) 2013-08-19 2018-06-05 Dow Global Technologies Llc Method for producing one or more ethylene-based polymers
US10525785B2 (en) 2016-09-22 2020-01-07 Beijingwest Industries Co., Ltd. Air suspension assembly

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JP2006234070A (ja) * 2005-02-25 2006-09-07 Kayaba Ind Co Ltd 単筒型油圧緩衝器
US7500659B2 (en) * 2005-04-07 2009-03-10 Bfs Diversified Products, Llc Air spring assembly and method
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US8196723B1 (en) 2008-11-14 2012-06-12 Robust Systems Solutions, LLC Pneumatic damper
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DE102012201104B4 (de) * 2011-04-06 2024-05-23 Continental Automotive Technologies GmbH Luftfeder mit Hybridbalg
KR101337583B1 (ko) * 2011-12-12 2013-12-06 주식회사 만도 쇽업소버의 더스트 씰 구조
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US9290231B1 (en) * 2015-05-19 2016-03-22 Jesse Jurrens Vehicle suspension element
CN105179548B (zh) * 2015-09-15 2018-12-25 广德高斯特车辆部件有限公司 车辆用减震橡胶空气弹簧
DE102015226044A1 (de) * 2015-12-18 2017-06-22 Thyssenkrupp Ag Luftfederanschlussvorrichtungsabdichtung
DE102016210121B4 (de) * 2016-06-08 2022-02-03 Ford Global Technologies, Llc Luftfeder für Fahrwerke von Fahrzeugen
US10363789B2 (en) * 2016-07-07 2019-07-30 The Pullman Company Top mount assembly with bushing having integral anti-vibration feature
US9890828B1 (en) 2016-10-28 2018-02-13 Teraflex, Inc. Through-shaft steering damper
US10053180B1 (en) * 2017-08-31 2018-08-21 Tower Trikes, Inc. Trike steering and suspension systems
CN109866568B (zh) * 2019-03-29 2022-07-08 重庆长安汽车股份有限公司 一种后减振器的连接装置及汽车
CN111823801A (zh) * 2020-07-13 2020-10-27 黄连好 一种半挂车空气悬架
KR102212684B1 (ko) * 2020-07-30 2021-02-04 현대자동차주식회사 에어 스프링
US11548345B1 (en) * 2020-09-02 2023-01-10 Afco Performance Group, Llc Suspension component for utility vehicles
CN112046223B (zh) * 2020-09-08 2022-03-22 一汽解放汽车有限公司 一种空气弹簧连接结构和汽车
DE102022210872A1 (de) 2022-10-13 2024-04-18 Continental Automotive Technologies GmbH Luftfedereinrichtung

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US20070089951A1 (en) * 2005-10-20 2007-04-26 Peter Skiba Air spring protective sleeve
WO2007090480A1 (de) * 2006-02-07 2007-08-16 Continental Aktiengesellschaft LUFTFEDER MIT AUßENFÜHRUNG
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US20060006590A1 (en) 2006-01-12
CN1675080A (zh) 2005-09-28
EP1539515A1 (en) 2005-06-15
CN100455454C (zh) 2009-01-28
PL373171A1 (en) 2005-08-22
WO2004014673A1 (en) 2004-02-19
EP1539515B1 (en) 2008-11-05
US7226045B2 (en) 2007-06-05
PL210716B1 (pl) 2012-02-29
DE60324571D1 (de) 2008-12-18
AU2003265334A1 (en) 2004-02-25

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