GB2208312A - Hydraulically damped bearing - Google Patents
Hydraulically damped bearing Download PDFInfo
- Publication number
- GB2208312A GB2208312A GB8815876A GB8815876A GB2208312A GB 2208312 A GB2208312 A GB 2208312A GB 8815876 A GB8815876 A GB 8815876A GB 8815876 A GB8815876 A GB 8815876A GB 2208312 A GB2208312 A GB 2208312A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bearing
- bearing sleeve
- chambers
- intermediate tube
- sleeves
- 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.)
- Withdrawn
Links
- 238000013016 damping Methods 0.000 claims description 22
- 208000020401 Depressive disease Diseases 0.000 claims description 13
- 230000002093 peripheral effect Effects 0.000 claims description 12
- 229920001971 elastomer Polymers 0.000 claims description 10
- 239000000806 elastomer Substances 0.000 claims description 8
- 239000012530 fluid Substances 0.000 claims description 5
- 238000013017 mechanical damping Methods 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000011324 bead Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000013536 elastomeric material Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C11/00—Pivots; Pivotal connections
- F16C11/04—Pivotal connections
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C27/00—Elastic or yielding bearings or bearing supports, for exclusively rotary movement
- F16C27/06—Elastic or yielding bearings or bearing supports, for exclusively rotary movement by means of parts of rubber or like materials
- F16C27/063—Sliding contact bearings
-
- 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
- F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
- F16F13/04—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper
- F16F13/06—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper
- F16F13/08—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper the plastics spring forming at least a part of the wall of the fluid chamber of the damper
- F16F13/14—Units of the bushing type, i.e. loaded predominantly radially
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Combined Devices Of Dampers And Springs (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
Description
r 1 1 1 Hydraulically damping bearing 2208312 The invention relates to a
hydraulically damping bearing with an inner bearing sleeve, an outer bearing sleeve engaging around this at a radial distance, an elastomeric insert located in between the two sleeves and secured onto one of the bearing sleeves, and at least two outwardly sealed chambers filled with fluid damping medium and connected to each other via at least one throttle port, the said chambers being provided between the two bearing sleeves and being bounded radially inwardly by the inner bearing sleeve, an intermediate tube being located between the two bearing sleeves and being secured to the insert.
A hydraulically damping bearing of this type is already known from DE-PS 28 41 505. Its chambers filled with damping medium are thereby formed by depressions moulded into the outer periphery of the elastomeric insert which is vulcanised onto the inner bearing sleeve, the depression being covered by the outer bearing sleeve which is in sealing-tight manner pushed onto the intermediate tube connected by vulcanised to the insert.
In order to ensure the necessary sealing-tightness of the chambers in the direction of the bearing ends, the shell of the intermediate tube is at its end portions, on the outer periphery, enclosed by respective annular sealing beads onto which the outer bearing sleeve is pushed, compressing the sealing beads.
In view of the relatively small differences between the outside diameter of the intermediate tube and the inside diameter of the outer bearing sleeve, assembly of the outer bearing sleeve is not without difficulty. Furthermore, manufacture of the depressions provided in the elastomeric insert in order to form the chambers is a clumsy process in that for the purpose the vulcanised apparatus must be equipped with radially adjustable mould pushing means in order to form the elastomeric insert and to vulcanise it onto the inner bearing sleeve and the 2 intermediate tube.
Furthermore, the throttle ports which connect the chambers to each other extend between the outer bearing sleeve and the intermediate tube, the latter being provided for the purpose with corresponding peripheral grooves made by furrow-like depressions. This arrangement of throttle ports. does not make it possible to achieve special damping effects.
Finally, in the region of the chambers, due to the outer bearing sleeve which makes the depressions, noise bridges are created in which -the damping medium is not disengaged from the outer bearing sleeve by a layer of elastomer, the relative distance between the depressions and the inner bearing sleeve being relatively small.
Therefore, the invention seeks to improve a referred to in the opening paragraph, that it can be more easily manufactured and assembled, can permit of specific damping effects and is distinguished by good sound insulation.
According to the invention, there is provided a hydraulically damping bearing with an inner bearing sleeve, an outer bearing sleeve engaging around this at a radial distance, an elastomeric insert located in between the two sleeves and secured onto one of the bearing sleeves, and at least two outwardly sealed chambers filled with fluid damping-medium and connected to each other via at least one throttle port, the said chambers being provided between the two bearing sleeves and being bounded radially inwardly by the inner bearing sleeve, an intermediate tube being located between the two bearing sleeves and being secured to the insert, wherein the chambers are formed by peripheral depressions in the inner one-piece bearing sleeve and are bounded radially outwardly by the elastomeric insert, and the intermediate tube engages around the inner bearing sleeve, both parts having portions of their periphery in mutual and formlocking engagement.
Thus, for producing the chambers, the embodiment hydraulically damping bearing of the type i 1 3 according to the invention calls for no special measures when vulcanising the elastomeric insert into the outer bearing sleeve, i.e, for producing radial depressions in the elastomeric insert, it is possible to dispense with the idea of fitting the vulcanising apparatus with mould pushers which have to be actuated specially. The chambers can be formed in 'the axial direction of the elastomeric insert, from one end face thereof, from recesses moulded into its inner periphery or by corresponding depressions on the outer periphery of the inner bearing sleeve.
The inner bearing sleeve is assembled purely by being inserted into the central aperture in the elastomeric insert, during which process it centres itself and when it is in its final fitted position, the chambers naturally form.
The disposition of the chambers which is envisaged as being in the region of the inner bearing sleeve provides a relatively,considerable radial distance between the chambers and the outer bearing sleeve, the dampingly acting elastomeric material of the insert which is provided between the outer bearing sleeve and the chambers ensures an effective noise insulation.
The axial fixing of the inner bearing sleeve in the intermediate tube can advantageously be made by mutual form-locking inter-engagement of peripheral portions provided in the region of the end faces of the parts.
The throttle ports can thereby extend between the outer periphery of the inner bearing sleeve and the inner periphery of the intermediate tube. In order to produce the throttle ports, it is possible to dispense with a corresponding shaping of the intermediate tube which is any case has a thin wall, because it is possible for these to be formed by peripheral grooves moulded into the outer periphery of the inner bearing sleeve which has a correspondingly larger wall thickness, a clearly defined hydraulic connection being established between the chambers and being relatively short and tolerancemaintaining.
4 If necessary, shifting the throttle ports to the inner bearing sleeve also makes it possible to use the bearing sleeve to carry appropriate damping elements. This is conveniently possible if the throttle ports extend in widened-diameter peripheral portions of the inner bearing sleeve which are disposed-between the recesses in the elastomeric insert, suitable damping agents such as throttles, plate or ball valves being inserted in bores which constitute the throttle ports.
The embodiments of the invention are characterised by definite chamber connections which are unaffected by installation of the bearing and by which a flow resistance required for a desired damping characteristic radially of the bearing axis is offered in opposition to the damping agent, the said bearing being advantageously suitable both for the mounting of control arms, such as trailing arms and transverse arms, as well as for connecting vehicle sub-frames to super structures.
For use as a sub-frame bearing, it is convenient if the outer bearing sleeve carries on its outer periphery, at least over portions thereof, a relatively thin coating of elastomer. This has the advantage that if a suitable lubricant is used, the bearing can be incorporated with relatively low insertion forces into the coarse tolerance recess in a corresponding sub-frame bearing housing; at the same time, though, a reliable fit in the recess or high pressure forces can be attained.
For bearings of this type, the invention offers the particular advantage that when the elastomeric insert is vulcanised onto the intermediate tube and into the outer bearing sleeve, it is also possible jointly to vulcanise the thin coating of elastomer onto its outer periphery.
On the other hand, if the outer bearing sleeve of a bearing of a type disclosed in DE-PS 28 41 505 has to be provided with an external thin coating of elastomer, this in contrast to the invention requires a vulcanising process to be carried out independently, since the outer bearing sleeve is not vulcanised onto the elastomeric 11 1, W insert of this bearing.
Embodiments of the invention will now be described by way of example with reference to the drawings, in which:- Fig. 1 is a longitudinal section through a bearing, for example intended for the resilient connection of a sub-frame to a motor vehicle superstructure; Fig. 2 shows a cross-section through the bearing according to Fig. 1, taken on the line II-II in Fig. 1; Fig. 3 shows a longitudinal section through the bearing taken on the line III-III in Fig. 2, and Fig. 4 is a partial cross-section through a further embodiment of a bearing similar to that in Fig. 1.
The hydraulically damping bearing shown has an external cylindrical bearing sleeve 10, an inner bearing sleeve 12 disposed concentrically therewith, an elastomeric insert 14 consisting preferably of rubber and an intermediate tube 16 which accommodates the inner bearing sleeve 12.
The outer bearing sleeve 10 preferably has an outwardly set marginal portion adapted to form a flange 18 which fixes the installed position of the bearing inside a recess in a sub-frame bearing housing. On the outer periphery of the outer bearing sleeve 10, or at least on areas thereon, there is vulcanised on an outer coating 20 consisting of an elastomer, preferably rubber. This serves to bridge relatively large tolerances in diameter of the recess which accommodates the bearing, while the bearing can be adhesively inserted into the relevant recess with the help of a suitable lubricant and with the application of relatively low pressing forces.
The central passage 22 in the inner bearing sleeve 12 is preferably of multi-splined cross-section in order to be able to accommodate a clamping bolt in a rotationally rigid manner. The inner bearing sleeve 12 is inserted into the intermediate tube 16 and axially secured in the elastomeric insert 14 by this latter. For the purpose of advantageous assembly, both parts 12 and 16 6 are constructed with a stepped diameter, the intermediate tube 16 tapering conically and having on its inner periphery a thin coating 24 of elastomer.
For axially securing the'inner bearing sleeve 12 in the intermediate tube 16, the end parts 16' and 16" of the latter are bent over inwardly and each engages behind an annular shoulder 12',12" of the bearing sleeve 12. Outer bearing sleeve 10 and intermediate tube 16 are connected to the elastomeric insert 14 by a vulcanising process. For axially securing the inner sleeve 12 in the intermediate tube 16, it is also possible to envisage other suitable form-locking connections.
For hydraulic bearing damping, for example two diametrically associated damping fluid containing chambers 26 and 28 are provided, which are disposed, between the inner bearing sleeve 12 and the insert 14 and which are connected to each other via a throttle port 30. The chambers 26 and 28 together with the throttle port 30 are in the present embodiment formed by peripheral depressions 32 and 34 moulded into the outer periphery of the inner bearing sleeve 12 or by a plunge-cut peripheral portion 36, the intermediate tube 16 being provided with a windowlike cut- out 38, 40 in the region of the peripheral depressions 32 and 34. Instead of the plunge-cut peripheral portion, it is possible to provide on the shell of the inner bearing sleeve 12 at least one external peripheral groove, the continuity of which is broken by the depressions 32 and 34.
For assembly of the bearing, the inner bearing sleeve 12 can in an axial direction be so pushed into the intermediate tube 16 that the peripheral depressions 32 and 34 thereon are in each case adjacent one of the windowlike out-outs 38 and 40. At the same time, the chambers 26 and 28 which are thereby created, and also the throttle port 30, have to be filled with damping fluid. The thin coating 24 of elastomer on the inner periphery of the intermediate tube 16 hereby forms a lining which outwardly hermetically seals the chambers 26 and 28.
1 7 Fig. 4 shows a possible alternative embodiment of throttle port arrangement. In this case, there is provided as the throttle port a bore 42 which extends at a right-angle to the axis of the inner bearing sleeve 12 through a wall part 44 of this latter.
The said throttle port or the bore 42 may be provided with appropriate mechanical damping elements in order to achieve special damping effects.
8
Claims (6)
1. A hydraulically damping bearing with an inner bearing sleeve, an outer bearing sleeve engaging around this at a radial distance, an elastomeric insert located in between the two sleeves and secured onto one of the bearing sleeves, and at least two outwardly sealed chambers filled with fluid damping medium and connected to each other via at least one throttle port, the.said chambers being provided between the two bearing sleeves and being bounded radially inwardly by the inner bearing sleeve, an intermediate tube being located between the two bearing sleeves and being secured to the insert, wherein the chambers are formed by peripheral depressions in the inner one-piece bearing sleeve and are bounded radially outwardly by the elastomeric insert, and the intermediate tube engages around the inner bearing sleeve, both parts having portions of their periphery in mutual and formlocking engagement.
2. A bearing according to claim 1, wherein the throttle port comrises a bore disposed in part of the shell of the inner bearing sleeve and extending at a right-angle to the axis thereof.
3. A bearing according to claim 2, wherein the bore is provided with mechanical damping means.
4. A bearing according to any one of the preceding claims, wherein the inner bearing sleeve carries on its outer periphery a'layer of elastomer which bears on the inner periphery of the intermediate tube.
5. A bearing according to an one of claims 1 to 4, wherein the intermediate tube has cut outs in the region of the chambers.
IF 9
6. A hydraulically damping bearing substantially as described herein with reference to and as illustrated in the accompanying drawings.
Pub'islied 1988 w T"cPatcn Office. S ate HcuEt 66 -.H., Fc.-crr-. Lcndon V. C' E 4TF Y-urther cc pie- Tna,.,'re obta Sales Branch, St Mary Cray, Orpington. Kerit BR5 3RD Printed by Multiplex Lechruques Itd. St Ma-,Iv Crkv. Ken: Con 187
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19873722132 DE3722132A1 (en) | 1987-07-04 | 1987-07-04 | HYDRAULIC DAMPING BEARING |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB8815876D0 GB8815876D0 (en) | 1988-08-10 |
| GB2208312A true GB2208312A (en) | 1989-03-22 |
Family
ID=6330907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8815876A Withdrawn GB2208312A (en) | 1987-07-04 | 1988-07-04 | Hydraulically damped bearing |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS6415550A (en) |
| DE (1) | DE3722132A1 (en) |
| FR (1) | FR2617549A1 (en) |
| GB (1) | GB2208312A (en) |
| IT (1) | IT1224668B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5305991A (en) * | 1991-05-21 | 1994-04-26 | Firma Carl Freudenberg | Hydraulically damped sleeve bearing |
| GB2282207A (en) * | 1993-09-24 | 1995-03-29 | Boge Gmbh | Hydraulically damped rubber mounting |
| GB2308422A (en) * | 1995-12-21 | 1997-06-25 | Btr Plc | Hydraulic mounting |
| GB2351138A (en) * | 1999-06-14 | 2000-12-20 | Avon Vibration Man Syst Ltd | Mounting device for hydraulically damping both axial and radial vibrations |
| CN108297939A (en) * | 2017-12-12 | 2018-07-20 | 北汽福田汽车股份有限公司 | Collision energy-absorbing device, front longitudinal beam, vehicle frame and automobile |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69017661T2 (en) * | 1989-10-05 | 1995-07-06 | Seiko Epson Corp., Tokio/Tokyo | IMAGING DEVICE. |
| DE3942655A1 (en) * | 1989-12-22 | 1991-06-27 | Bayerische Motoren Werke Ag | Hydraulically damped mounting - has two hydraulic chambers linked by flow restriction |
| DE9319901U1 (en) * | 1993-12-24 | 1994-03-31 | Paguag GmbH & Co, 40472 Düsseldorf | Hydraulically damping bush bearing |
| DE4438932C2 (en) * | 1994-10-31 | 1998-07-02 | Daimler Benz Ag | Hydro bearing |
| DE10064330A1 (en) * | 2000-12-21 | 2002-07-11 | Freudenberg Carl Kg | hydromount |
| EP3374681A4 (en) | 2015-11-11 | 2019-07-24 | Greene, Tweed Technologies, Inc. | Sealing rings and sealing ring assemblies for high temperature end applications |
| CN115614397B (en) * | 2022-09-27 | 2023-09-26 | 昆山安控发展装备有限公司 | Spline silencing device |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2841505C2 (en) * | 1978-09-23 | 1983-04-07 | Boge Gmbh, 5208 Eitorf | Hydraulically damping rubber mount |
| DE3028631C2 (en) * | 1980-07-29 | 1984-02-09 | Boge Gmbh, 5208 Eitorf | Axially resilient sleeve rubber spring |
| JPS58203242A (en) * | 1982-05-22 | 1983-11-26 | Tokai Rubber Ind Ltd | Suspension bush and manufacturing method thereof |
| JPS60139942A (en) * | 1983-12-27 | 1985-07-24 | Nissan Motor Co Ltd | Tubular bush |
| JPS60168931A (en) * | 1984-02-08 | 1985-09-02 | Nissan Motor Co Ltd | Vibration isolator encapsulated with fluid |
| JPS60172743A (en) * | 1984-02-16 | 1985-09-06 | Kinugawa Rubber Ind Co Ltd | Vibro-isolating bush |
| JPS60245849A (en) * | 1984-05-18 | 1985-12-05 | Tokai Rubber Ind Ltd | Fluid-sealed type vibrationproof assembly body |
| DE8424307U1 (en) * | 1984-08-16 | 1985-09-12 | Metzeler Kautschuk GmbH, 8000 München | Rubber / metal bearings for the pivoting articulation of a wheel control arm or an axle assembly on the body of a motor vehicle |
| DE3519016A1 (en) * | 1985-05-25 | 1986-12-04 | Boge Gmbh, 5208 Eitorf | AXIAL LOADABLE BEARING |
| JPH0225947Y2 (en) * | 1985-09-26 | 1990-07-16 | ||
| DE3882824T2 (en) * | 1987-06-17 | 1994-01-05 | Btr Plc | Elastic bushing with fluid damping. |
-
1987
- 1987-07-04 DE DE19873722132 patent/DE3722132A1/en active Granted
-
1988
- 1988-06-28 JP JP63158249A patent/JPS6415550A/en active Granted
- 1988-07-01 IT IT8848145A patent/IT1224668B/en active
- 1988-07-04 GB GB8815876A patent/GB2208312A/en not_active Withdrawn
- 1988-07-04 FR FR8809004A patent/FR2617549A1/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5305991A (en) * | 1991-05-21 | 1994-04-26 | Firma Carl Freudenberg | Hydraulically damped sleeve bearing |
| GB2282207A (en) * | 1993-09-24 | 1995-03-29 | Boge Gmbh | Hydraulically damped rubber mounting |
| GB2282207B (en) * | 1993-09-24 | 1997-05-07 | Boge Gmbh | Hydraulically damped rubber mounting |
| GB2308422A (en) * | 1995-12-21 | 1997-06-25 | Btr Plc | Hydraulic mounting |
| GB2308422B (en) * | 1995-12-21 | 1998-04-01 | Btr Plc | Hydraulic mounting |
| GB2351138A (en) * | 1999-06-14 | 2000-12-20 | Avon Vibration Man Syst Ltd | Mounting device for hydraulically damping both axial and radial vibrations |
| GB2351138B (en) * | 1999-06-14 | 2001-08-08 | Avon Vibration Man Syst Ltd | Hydraulically damped mounting device |
| CN108297939A (en) * | 2017-12-12 | 2018-07-20 | 北汽福田汽车股份有限公司 | Collision energy-absorbing device, front longitudinal beam, vehicle frame and automobile |
Also Published As
| Publication number | Publication date |
|---|---|
| IT8848145A0 (en) | 1988-07-01 |
| JPH0573932B2 (en) | 1993-10-15 |
| DE3722132A1 (en) | 1989-01-12 |
| IT1224668B (en) | 1990-10-18 |
| FR2617549A1 (en) | 1989-01-06 |
| GB8815876D0 (en) | 1988-08-10 |
| DE3722132C2 (en) | 1989-05-18 |
| JPS6415550A (en) | 1989-01-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |