GB1587936A - Vehicle suspension units - Google Patents

Vehicle suspension units Download PDF

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Publication number
GB1587936A
GB1587936A GB4601677A GB4601677A GB1587936A GB 1587936 A GB1587936 A GB 1587936A GB 4601677 A GB4601677 A GB 4601677A GB 4601677 A GB4601677 A GB 4601677A GB 1587936 A GB1587936 A GB 1587936A
Authority
GB
United Kingdom
Prior art keywords
cylinder
vehicle
reservoir
piston
unit
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.)
Expired
Application number
GB4601677A
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.)
Girling Ltd
Original Assignee
Girling Ltd
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 Girling Ltd filed Critical Girling Ltd
Priority to GB4601677A priority Critical patent/GB1587936A/en
Priority to JP10064778U priority patent/JPS5476013U/ja
Publication of GB1587936A publication Critical patent/GB1587936A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G15/00—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type
    • B60G15/08—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having fluid spring
    • B60G15/12—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having fluid spring and fluid damper
    • 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
    • F16F9/06—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using both gas and liquid
    • F16F9/064—Units characterised by the location or shape of the expansion chamber

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Damping Devices (AREA)
  • Vehicle Body Suspensions (AREA)

Description

(54) IMPROVEMENTS IN OR RELATING TO VEHICLE SUSPENSION UNITS (71) We, GIRLING LIMITED, a British Company, of Kings Road, Tyseley, Birmingham 11, do hereby declare the invention, for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement:- This invention relates to vehicle telescopic suspension units.
Such units commonly comprise a liquid chamber and a gas chamber separated by a movable wall. Commonly, both the liquid and gas chambers are contained in a cylinder and separated by a free piston. A dampening piston works in the liquid chamber and is carried by a piston rod extending sealingly through one end of the cylinder. The cylinder and piston rod each have a mounting hole for attachment of the unit to the vehicle.
In certain vehicles, for example motorcycles, the lack of installation space available and the high operating temperatures preclude the use of the above-described units and it has been proposed to provide units having a shorter cylinder with an additional reservoir remote from the cylinder and attached thereto by flexible hoses.
In accordance with the present invention, there is provided a vehicle telescopic suspension unit having a cylinder within which a damping piston works, the piston being carried by a piston rod which extends sealingly through one end of a cylinder, mounting means at the other end of the cylinder for attachment of the cylinder to a vehicle, and a reservoir in fluid flow communication with the cylinder, wherein the mounting means is interposed between, and is rigidly attached to, the reservoir and the cylinder.
Preferably, the mounting means comprises a cap secured to the end of the cylinder and having a transverse aperture for receiving a mounting bolt. The mounting means preferably has one or more fluid flow passageways interconnecting the cylinder and the reservoir.
The reservoir may be a cylinder which contains a movable wall in the form of a sealingly slidable free piston.
A vehicle suspension unit in accordance with the invention will now be described by way of example with reference to the accompanying drawings, in which: FIGURE 1 is an axial section of part of the unit, and FIGURE 2 is a side view showing in section an arrangement for mounting the unit on a vehicle.
The unit comprises a cylinder 1 which usually contains liquid or a liquid/gas mixture and in which is slidable a damping piston attached to a piston rod extending through one end of the cylinder. The piston and rod are not illustrated.
To the other, illustrated end of the cylinder 1 is attached a cap 2 having a transverse aperture 3 which when the unit is mounted on a vehicle receives a mounting assembly 4 (Figure 2) for attachment of the cylinder to the vehicle.
A cylinder 5 defining an auxiliary reservoir is rigidly secured to the cap 2. A free piston 6 is sealingly slidable in the cylinder 5 and separate an upper chamber 7, which usually contains pressurised gas, commonly nitrogen, from a lower chamber 9 which communicates with the interior of cylinder 1 through longitudinally extending passageways 9 formed in the cap 2.
The above-described unit has the advantage that the cylinders 1, 5 and interposed cap 2 are all rigidly secured together and can be manufactured as a unit in a factory.
Furthermore, the suspension unit can be used when the distance between the vehicle mounting points is relatively small.
WHAT WE CLAIM IS: 1. A vehicle telescopic suspension unit having a cylinder within which a damping piston works, the piston being carried by a piston rod which extends sealingly through one end of a cylinder, mounting means at the other end of the cylinder for attachment of the cylinder to a vehicle, and a reservoir in fluid flow communication with the cylinder, wherein the mounting means is interposed between, and is rigidly attached to, the reservoir and the cylinder.
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (6)

**WARNING** start of CLMS field may overlap end of DESC **. (54) IMPROVEMENTS IN OR RELATING TO VEHICLE SUSPENSION UNITS (71) We, GIRLING LIMITED, a British Company, of Kings Road, Tyseley, Birmingham 11, do hereby declare the invention, for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement:- This invention relates to vehicle telescopic suspension units. Such units commonly comprise a liquid chamber and a gas chamber separated by a movable wall. Commonly, both the liquid and gas chambers are contained in a cylinder and separated by a free piston. A dampening piston works in the liquid chamber and is carried by a piston rod extending sealingly through one end of the cylinder. The cylinder and piston rod each have a mounting hole for attachment of the unit to the vehicle. In certain vehicles, for example motorcycles, the lack of installation space available and the high operating temperatures preclude the use of the above-described units and it has been proposed to provide units having a shorter cylinder with an additional reservoir remote from the cylinder and attached thereto by flexible hoses. In accordance with the present invention, there is provided a vehicle telescopic suspension unit having a cylinder within which a damping piston works, the piston being carried by a piston rod which extends sealingly through one end of a cylinder, mounting means at the other end of the cylinder for attachment of the cylinder to a vehicle, and a reservoir in fluid flow communication with the cylinder, wherein the mounting means is interposed between, and is rigidly attached to, the reservoir and the cylinder. Preferably, the mounting means comprises a cap secured to the end of the cylinder and having a transverse aperture for receiving a mounting bolt. The mounting means preferably has one or more fluid flow passageways interconnecting the cylinder and the reservoir. The reservoir may be a cylinder which contains a movable wall in the form of a sealingly slidable free piston. A vehicle suspension unit in accordance with the invention will now be described by way of example with reference to the accompanying drawings, in which: FIGURE 1 is an axial section of part of the unit, and FIGURE 2 is a side view showing in section an arrangement for mounting the unit on a vehicle. The unit comprises a cylinder 1 which usually contains liquid or a liquid/gas mixture and in which is slidable a damping piston attached to a piston rod extending through one end of the cylinder. The piston and rod are not illustrated. To the other, illustrated end of the cylinder 1 is attached a cap 2 having a transverse aperture 3 which when the unit is mounted on a vehicle receives a mounting assembly 4 (Figure 2) for attachment of the cylinder to the vehicle. A cylinder 5 defining an auxiliary reservoir is rigidly secured to the cap 2. A free piston 6 is sealingly slidable in the cylinder 5 and separate an upper chamber 7, which usually contains pressurised gas, commonly nitrogen, from a lower chamber 9 which communicates with the interior of cylinder 1 through longitudinally extending passageways 9 formed in the cap 2. The above-described unit has the advantage that the cylinders 1, 5 and interposed cap 2 are all rigidly secured together and can be manufactured as a unit in a factory. Furthermore, the suspension unit can be used when the distance between the vehicle mounting points is relatively small. WHAT WE CLAIM IS:
1. A vehicle telescopic suspension unit having a cylinder within which a damping piston works, the piston being carried by a piston rod which extends sealingly through one end of a cylinder, mounting means at the other end of the cylinder for attachment of the cylinder to a vehicle, and a reservoir in fluid flow communication with the cylinder, wherein the mounting means is interposed between, and is rigidly attached to, the reservoir and the cylinder.
2. A telescopic suspension unit according to claim 1, wherein the mounting means comprises a cap secured to the end of the cylinder and having a transverse aperture for receiving a mounting bolt for attachment to the vehicle.
3. A telescopic suspension unit according to claim 1 or 2, wherein the mounting means comprises one or more fluid flow passageways interconnecting the cylinder and the reservoir.
4. A telescopic suspension unit according to any of claims 1 to 3, wherein the reservoir is an auxiliary cylinder containing a movable wall separating the reservoir into two chambers.
5. A telescopic suspension unit according to claim 4, wherein the movable wall is a sealingly slidable free piston.
6. A vehicle telescopic suspension strut constructed and arranged substantially as herein described with reference to the accompanying drawings.
GB4601677A 1977-11-04 1977-11-04 Vehicle suspension units Expired GB1587936A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB4601677A GB1587936A (en) 1977-11-04 1977-11-04 Vehicle suspension units
JP10064778U JPS5476013U (en) 1977-11-04 1978-07-21

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4601677A GB1587936A (en) 1977-11-04 1977-11-04 Vehicle suspension units

Publications (1)

Publication Number Publication Date
GB1587936A true GB1587936A (en) 1981-04-15

Family

ID=10439496

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4601677A Expired GB1587936A (en) 1977-11-04 1977-11-04 Vehicle suspension units

Country Status (2)

Country Link
JP (1) JPS5476013U (en)
GB (1) GB1587936A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0041342A2 (en) * 1980-06-03 1981-12-09 LUCAS INDUSTRIES public limited company Improvements in suspension struts for vehicles
GB2300893A (en) * 1995-05-19 1996-11-20 Monroe Auto Equipment Co Fluid cylinder; delivering fluid and/or electric signals
DE10348315B3 (en) * 2003-10-17 2004-12-23 Zf Friedrichshafen Ag Vibration damper used especially as a single-tube vibration damper comprises hinge eye having inner and outer sleeve that form annular space with flow connection to equalizing space
DE102004027934A1 (en) * 2004-06-08 2005-12-29 Wilhelm Karmann Gmbh Cylinder and piston rod damping unit for especially roof of convertible motorcar has compensating volume space formed at closed end of cylindrical casing, and fastening element in region of compensating space

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0041342A2 (en) * 1980-06-03 1981-12-09 LUCAS INDUSTRIES public limited company Improvements in suspension struts for vehicles
EP0041342A3 (en) * 1980-06-03 1982-01-20 LUCAS INDUSTRIES public limited company Improvements in suspension struts for vehicles
GB2300893A (en) * 1995-05-19 1996-11-20 Monroe Auto Equipment Co Fluid cylinder; delivering fluid and/or electric signals
GB2300893B (en) * 1995-05-19 1999-06-09 Monroe Auto Equipment Co Method and apparatus for delivering fluid and/or electric signals
DE10348315B3 (en) * 2003-10-17 2004-12-23 Zf Friedrichshafen Ag Vibration damper used especially as a single-tube vibration damper comprises hinge eye having inner and outer sleeve that form annular space with flow connection to equalizing space
FR2861150A1 (en) * 2003-10-17 2005-04-22 Zahnradfabrik Friedrichshafen OSCILLATION DAMPER WITH EQUALIZING CHAMBER DEFINED BY AN OUTER BUSHING OF AN ARTICULATING EYE FIXED ON THE CYLINDER
US7225906B2 (en) 2003-10-17 2007-06-05 Zf Friedrichshafen Ag Vibration damper having a joint eye
DE102004027934A1 (en) * 2004-06-08 2005-12-29 Wilhelm Karmann Gmbh Cylinder and piston rod damping unit for especially roof of convertible motorcar has compensating volume space formed at closed end of cylindrical casing, and fastening element in region of compensating space

Also Published As

Publication number Publication date
JPS5476013U (en) 1979-05-30

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee