Sliding bearing element

Patent metadata

Field	Value
Publication number	US-11486441-B2
Application number	US-201917272302-A
Country	US
Kind code	B2
Filing date	Aug 26, 2019
Priority date	Aug 29, 2018
Publication date	Nov 1, 2022
Grant date	Nov 1, 2022

Abstract

A sliding bearing element with a first layer having a radially inner surface includes a measuring device arranged on the radially inner surface of the first layer. The measuring device includes, in the order indicated, a first electrical insulating layer, a sensor layer and a second electrical insulating layer. A sliding layer is arranged on the second electrical insulating layer.

First claim

The invention claimed is:

1. A sliding bearing element comprising:
a first layer having a radially inner surface,
a measuring device arranged on the radially inner surface of the first layer, the measuring device including, in the order indicated, a first electrical insulating layer arranged over the entire radially inner surface of the first layer and defining a radially inner surface, a sensor layer arranged over the entire radially inner surface of the first electrical insulating layer and defining a radially inner surface, the sensor layer having a thickness between 0.1 μm and 4 μm and structured to form conductive paths, and a second electrical insulating layer arranged over the entire radially inner surface of the sensor layer and defining a radially inner surface, and
a sliding layer arranged over the entire radially inner surface of the second electrical insulating layer, wherein:
the first electrical insulating layer is a PVD layer deposited directly onto the first layer,
the sensor layer is a PVD layer,
the second electrical insulating layer is a PVD layer, and
the sliding layer is a PVD layer or an anti-friction varnish layer.

2. The sliding bearing element according to claim 1 , wherein the sliding layer is a sputtering layer.

3. The sliding bearing element according to claim 1 , wherein a running-in layer is arranged on the sliding layer.

4. The sliding bearing element according to claim 1 , wherein at least one of the first and the second insulating layers is formed by Al 2 O 3 and/or SiO 2 .

5. The sliding bearing element according to claim 1 , wherein at least one of the first and the second insulating layers has a layer thickness between 2 μm and 8 μm.

6. The sliding bearing element according to claim 1 , wherein the sensor layer is formed by chromium or a chromium-nickel alloy.

7. The sliding bearing element according to claim 1 , wherein electrical contacts are arranged on a radially outermost layer and are electrically conductively connected to the sensor layer.

8. The sliding bearing element according to claim 1 , wherein the sensor layer is connected to a data transmission device, the data transmission device being designed for wireless data transmission.

9. The sliding bearing element according to claim 1 , wherein the sensor layer is connected to an energy generating device.

10. The sliding bearing element according to claim 1 , wherein the sensor layer has a conductor loop for temperature compensation during measurement.

11. A sliding bearing element according to claim 1 , wherein, on a radial end face, a recess is formed in which a telemetry device is arranged.

12. A sliding bearing comprising a bearing receptacle having a radially inner surface, and at least one sliding bearing element formed according to claim 1 , the at least one sliding bearing element is arranged to abut the radially inner surface of the bearing receptacle.

13. The sliding bearing according to claim 12 , wherein the at least one sliding bearing element according to claim 1 is arranged so that its sensor layer is positioned at least in the most heavily loaded zone of the sliding bearing.

14. The sliding bearing according to claim 12 , wherein electrical contacts are arranged on the radially inner surface of the bearing receptacle.

15. The sliding bearing according to claim 12 , wherein a telemetry device is arranged on or at least partially in the bearing receptacle.

16. A method of manufacturing a sliding bearing element, according to which a measuring device is formed on a radially inner surface of a first layer, the method comprising:
depositing a first electrical layer directly onto the entire radially inner surface of the first layer using a PVD method so as to define a radially inner surface,
depositing a sensor layer over the entire radially inner surface of the first electrical insulating layer using a PVD method so as to define a radially inner surface, the sensor layer having a thickness between 0.1 μm and 4 μm and being structured to form conductive paths,
depositing a second electrical insulating layer over the entire radially inner surface of the sensor layer using a PVD method so as to define a radially inner surface, and
arranging a sliding layer over the entire radially inner surface of the second electrical insulating layer over the entire radially inner surface, wherein:
the sliding layer is deposited using a PVD method or is formed as an anti-friction varnish layer.

17. The method according to claim 16 , further comprising:
structuring the sensor layer to form the conductive paths after the sensor layer is deposited over the first electrical insulating layer.

18. The method according to claim 17 , wherein the structuring of the sensor layer is carried out with a laser and/or using at least one mask.

19. The method according to claim 16 , wherein at least one of the first electrical insulating layer, the sensor layer, and the second electrical insulating layer is produced by means of reactive sputtering.

Assignees

• Miba Gleitlager Austria Gmbh

Inventors

• Hamdard Kamal

Classifications

• F16C2223/60

  by vapour deposition, e.g. PVD, CVD · CPC title

• F16C41/007

  Encoders, e.g. parts with a plurality of alternating magnetic poles · CPC title

• F16C43/00

  Assembling bearings · CPC title

• F16C41/008

  Identification means, e.g. markings, RFID-tags; Data transfer means · CPC title

• F16C33/125 Primary

  Details of bearing layers, i.e. the lining · CPC title