Wet running friction lining

Abstract

A wet running friction lining includes a plastic matrix, which contains at least one filler. The wet running friction lining contains bentonite as a filler.

Claims

1. A wet running friction lining comprising: a top layer including a plastics matrix containing bentonite as a filler; and a bottom layer including a plastics matrix not containing any bentonite, wherein the top layer does not include any reinforcing fibers.

2. The wet running friction lining as recited in claim 1 wherein the bentonite is the only filler of the top layer.

3. The wet running friction lining as recited in claim 1 wherein the top layer contains at least one other filler.

4. The wet running friction lining as recited in claim 3 wherein the at least one other filler includes kieselguhr.

5. The wet running friction lining as recited in claim 1 wherein the bentonite contains montmorillonite.

6. The wet running friction lining as recited in claim 5 wherein the montmorillonite is the main component of the bentonite.

7. The wet running friction lining as recited in claim 1 wherein the bottom layer contains aramid, diatomaceous earths, linters and/or fibers.

8. The wet running friction lining as recited in claim 7 wherein the bottom layer includes fibers, the fibers being carbon fibers.

9. The wet running friction lining as recited in claim 1 the wet running friction lining is a paper lining.

10. The wet running friction lining as recited in claim 1 wherein the bentonite is a white powder with a bulk density of about one hundred and forty four grams per liter.

11. The wet running friction lining as recited in claim 1 wherein the bentonite is a sheet silicate having a flaky structure.

12. A method of forming a wet running friction lining comprising: forming the wet running friction lining to include a top layer including a plastics matrix containing bentonite as a filler and a bottom layer including a plastics matrix not containing any bentonite, wherein the top layer does not include any reinforcing fibers.

13. The method as recited in claim 12 wherein the forming of the wet running friction lining comprises: producing a web of wet running friction material; and cutting the wet running friction lining from the web.

Description

BRIEF SUMMARY OF THE DRAWINGS

(1) Further advantages, features and details of the disclosure will become apparent from the following description, in which various illustrative embodiments are described in detail with reference to the drawing, in which:

(2) FIG. 1 shows a highly simplified illustration of a lining carrier according to an embodiment of the disclosure with two wet running friction linings in cross section;

(3) FIG. 2 shows an arrangement of the lining carrier with the wet running friction linings from FIG. 1 between two mating clutch parts made from a steel material, and

(4) FIG. 3 shows a simplified illustration of a multiplate pack with wet running clutch parts and with wet running mating clutch parts made from a steel material.

DETAILED DESCRIPTION

(5) A wet running clutch part 1 with a lining carrier 3 is illustrated in highly simplified form in cross section in FIG. 1. The lining carrier 3 comprises a main body 5, which has essentially the form of circular-ring-shaped disk with a rectangular ring cross section.

(6) Two wet running friction linings 6, 7 are secured on the main body 5. The wet running friction linings 6, 7 likewise have the form of circular-ring-shaped disks with a rectangular ring cross section. The wet running friction linings 6, 7 have the same outside diameter as the main body 5 of the lining carrier 3. The lining carrier 3 has a smaller inside diameter than the wet running friction linings 6, 7.

(7) The wet running clutch part 1 is an inner plate of a multiplate clutch, for example. To form a connection for conjoint rotation with an inner plate carrier of the multiplate clutch, the lining carrier 3 has internal toothing radially on the inside, for example.

(8) In FIG. 2, the wet running clutch part 1 from FIG. 1 is arranged between two wet running mating clutch parts 11, 12. The two mating clutch parts 11, 12 each have a main body 15, 16 in the form of a circular-ring-shaped disk with a rectangular ring cross section.

(9) An inside diameter of the main bodies 15, 16 of the mating clutch parts 11, 12 is the same as the inside diameter of the wet running friction linings 6, 7 in the lining carrier 3. However, the mating clutch parts 11, 12 have a larger outside diameter than the lining carrier 3 with the wet running friction linings 6, 7.

(10) The mating clutch parts 11, 12 are, for example, outer plates of the multiplate clutch described above. To form a connection for conjoint rotation with an outer plate carrier, the mating clutch parts 11, 12 are advantageously provided radially on the outside with external toothing.

(11) The wet running friction linings 6, 7 on the lining carrier 3 are formed from a wet running friction lining material. The lining carrier 3 is formed from a steel material. The mating clutch parts 11, 12 are likewise formed from a steel material.

(12) A multiplate pack 20 of a multiplate clutch is illustrated in simplified form in FIG. 3. In addition to the wet running clutch part 1, the multiplate pack 20 comprises three further wet running clutch parts 22, 23 and 24. The wet running clutch parts 22 to 24 are embodied in the same way as the wet running clutch part 1. The wet running clutch parts 1, 22 to 24 form inner plates in the multiplate pack 20.

(13) In addition to the mating clutch parts 11, 12 from FIG. 2, the multiplate pack 20 furthermore comprises three further wet running mating clutch parts 33, 34, 35. The wet running clutch parts 1, 22 to 24 are arranged alternately with the wet running mating clutch parts 11, 12, 33 to 35.

(14) The mating clutch parts 11, 12 and 33 to 35 form outer plates of the multiplate pack 20. Here, mating clutch part 11 forms an end plate of the multiplate pack 20, said end plate being on the left in FIG. 3. Similarly, the mating clutch part 35 arranged on the right in FIG. 3 forms a second end plate of the multiplate pack 20. The wet running clutch parts 1, 22 to 24 are each arranged between two mating clutch parts 11, 12; 33, 34; 34, 35.

(15) The wet running friction linings 6, 7 each comprise a bottom layer, which is also referred to as an underlayer, and a top layer, which is also referred to as an overlayer. The bottom layer is composed of aramid, diatomaceous earths, linters, carbon fibers and resin, for example. The top layer is composed of aramid, bentonite, linters and resin, for example.

(16) The bentonite is used as a filler only in the top layer. The bentonite used is preferably a chemically modified sheet silicate based on montmorillonite with the abbreviation EXM 1936. This is a white powder with a bulk density of about one hundred and forty four grams per liter.

LIST OF REFERENCE SIGNS

(17) 1 wet running clutch part 3 lining carrier 5 main body 6 wet running friction lining 7 wet running friction lining 11 mating clutch part 12 mating clutch part 15 main body 16 main body 20 multiplate pack 22 wet running clutch part 23 wet running clutch part 24 wet running clutch part 33 mating clutch part 34 mating clutch part 35 mating clutch part