Bearing

Patent metadata

Field	Value
Publication number	US-9797445-B2
Application number	US-201414775723-A
Country	US
Kind code	B2
Filing date	Jan 31, 2014
Priority date	Mar 25, 2013
Publication date	Oct 24, 2017
Grant date	Oct 24, 2017

Abstract

A bearing with a core and a sheath which surrounds the core, wherein the core is supported against the sheath by at least one elastomer or a plurality of elastomers, wherein at least two functional chambers which contain a working fluid are formed between the core and the sheath, and wherein the functional chambers are bounded at least partially by the elastomer or elastomers, characterized, with respect to the problem of configuring a bearing in such a way that a drop in rigidity of the bearing is as small as possible at low temperatures, in that at least one equalizing chamber is provided for an equalizing fluid, from which the equalizing fluid can be diverted into the functional chambers, wherein the equalizing fluid in the equalizing chamber is separated from a gas-filled space or a plurality of gas-filled spaces by a movable or elastic separating element.

First claim

The invention claimed is:

1. A bearing, comprising:
a core;
a sheath surrounding the core;
at least two functional chambers, each comprising an operating fluid, each chamber being disposed between the core and the sheath; and
an equalization chamber, configured for an equalization fluid,
wherein the core is supported in relation to the sheath, by a support comprising an elastomer,
wherein the functional chambers are at least partially delimited by the support,
wherein the equalization fluid can be introduced from the equalization chamber into the functional chambers,
wherein the equalization fluid in the equalization chamber is separated, by a movable separation element or elastic separation element, from at least one gas-filled space, and
wherein the equalization chamber is configured to be connected, in a fluid-conducting manner, to a connection duct of the functional chambers via a duct and a check valve, the check valve being positioned along the duct between the equalization chamber and the connection duct.

2. The bearing of claim 1 , wherein the equalization chamber is configured to be connected, in a fluid-conducting manner, to the connection duct via a thin duct.

3. The bearing of claim 1 , wherein the check valve allows a modest reflux into the equalization chamber.

4. The bearing of claim 1 , further comprising:
a flow throttle or a filter, disposed within the duct.

5. The bearing of claim 4 , wherein the flow throttle comprises a non-woven fabric which is sandwiched between disks provided with passages.

6. The bearing of claim 4 , wherein the flow throttle comprises a woven fabric which is sandwiched between disks provided with passages.

7. The bearing of claim 1 wherein the separation element comprises a displaceable piston.

8. The bearing of claim 1 wherein the separation element comprises a foam rubber.

9. The bearing of claim 1 , wherein the support comprises more than one elastomer.

10. The bearing of claim 1 , wherein the equalization fluid in the equalization chamber is separated by the movable separation element.

11. The bearing of claim 10 , wherein the movable separation element is elastic.

12. The bearing of claim 1 ,
wherein the equalization fluid in the equalization chamber is separated, by the movable element or elastic separation element, from more than one gas-filled space.

13. The bearing of claim 1 , wherein the equalization fluid in the equalization chamber is separated from more than one gas-filled space.

14. The bearing of claim 1 , further comprising:
a flow throttle, disposed within the duct.

15. The bearing of claim 1 , further comprising:
a filter, disposed within the duct.

16. The bearing of claim 1 , wherein the separation element is a displaceable piston.

17. The bearing of claim 1 , wherein the separation element is a foam rubber.

Assignees

• Freudenberg Carl Kg

Inventors

• Cordts Detlef

Classifications

• F16C32/0651

  Details of the bearing area per se · CPC title

• F16F13/20 Primary

  characterised by comprising also a pneumatic spring (F16F13/22, {F16F13/26} take precedence) · CPC title

• F16C27/063

  Sliding contact bearings · CPC title

• F16C32/0677 Primary

  of elastic or yielding bearings or bearing supports · CPC title

• F16C32/06

  with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings · CPC title