Sliding member

Patent metadata

Field	Value
Publication number	US-9709093-B2
Application number	US-201414768105-A
Country	US
Kind code	B2
Filing date	Feb 14, 2014
Priority date	Feb 15, 2013
Publication date	Jul 18, 2017
Grant date	Jul 18, 2017

Abstract

Bearing 13 has lining layer 17 that is formed of an alloy having a predetermined shape and that has chamfered portion 25 , and overlay layer 19 that is formed of a resin on an inner circumferential surface of lining layer 17 , the inner circumferential surface sliding relative to a mating shaft, and that covers at least a portion of chamfered portion 25.

First claim

What is claimed is:

1. A sliding member comprising:
a lining layer having a sliding surface that slides relative to a mating shaft and a chamfered portion that is provided in an end portion of the sliding surface with respect to an axial direction; and
an overlay layer that is formed of a resin and that covers the sliding surface and only part of the chamfered portion.

2. The sliding member according to claim 1 ,
wherein the overlay layer comprises:
a binder resin; and
at least one of a solid lubricant and a hard material.

3. The sliding member according to claim 2 ,
wherein the hard material comprises at least one of SiC, Al 2 O 3 , TiN, AlN, CrO 2 , Si 3 N 4 , ZrO 2 , and P.

4. The sliding member according to claim 2 ,
wherein the solid lubricant comprises at least one of MoS 2 , PTFE, graphite, WS 2 , h-BN, and SB 2 O 3 .

5. The sliding member according to claim 4 ,
wherein the hard material comprises at least one of SiC, Al 2 O 3 , TiN, AlN, CrO 2 , Si 3 N 4 , ZrO 2 , and P.

6. The sliding member according to claim 2 ,
wherein the binder resin comprises at least one of a polyamideimide resin, a polyimide resin, an epoxy resin, a phenolic resin, a polyacetal resin, a polyetheretherketone resin, and a polyphenylene sulfide resin.

7. The sliding member according to claim 6 ,
wherein the solid lubricant comprises at least one of MoS 2 , PTFE, graphite, WS 2 , h-BN, and SB 2 O 3 .

8. The sliding member according to claim 6 ,
wherein the hard material comprises at least one of SiC, Al 2 O 3 , TiN, AlN, CrO 2 , Si 3 N 4 , ZrO 2 , and P.

9. The sliding member according to claim 1 ,
wherein the overlay layer has a crowning shape that slopes toward the end portion with respect to the axial direction from a slope starting position that is a position at which a distance from an end surface with respect to the axial direction is shorter than W/2, W being a width of the lining layer in the axial direction.

10. The sliding member according to claim 9 ,
wherein the overlay layer comprises:
a binder resin; and
at least one of a solid lubricant and a hard material.

11. The sliding member according to claim 10 ,
wherein the hard material comprises at least one of SiC, Al 2 O 3 , TiN, AlN, CrO 2 , Si 3 N 4 , ZrO 2 , and P.

12. The sliding member according to claim 10 ,
wherein the solid lubricant comprises at least one of MoS 2 , PTFE, graphite, WS 2 , h-BN, and SB 2 O 3 .

13. The sliding member according to claim 12 ,
wherein the hard material comprises at least one of SiC, Al 2 O 3 , TiN, AlN, CrO 2 , Si 3 N 4 , ZrO 2 , and P.

14. The sliding member according to claim 10 ,
wherein the binder resin comprises at least one of a polyamideimide resin, a polyimide resin, an epoxy resin, a phenolic resin, a polyacetal resin, a polyetheretherketone resin, and a polyphenylene sulfide resin.

15. The sliding member according to claim 14 ,
wherein the solid lubricant comprises at least one of MoS 2 , PTFE, graphite, WS 2 , h-BN, and SB 2 O 3 .

16. The sliding member according to claim 14 ,
wherein the hard material comprises at least one of SiC, Al 2 O 3 , TiN, AlN, CrO 2 , Si 3 N 4 , ZrO 2 , and P.

17. The sliding member according to claim 9 ,
wherein in the overlay layer, a difference in height between the slope starting position and a position of the end portion of the sliding surface with respect to the axial direction is not more than 6 μm.

18. The sliding member according to claim 17 ,
wherein the overlay layer comprises:
a binder resin; and
at least one of a solid lubricant and a hard material.

19. The sliding member according to claim 18 ,
wherein the hard material comprises at least one of SiC, Al 2 O 3 , TiN, AlN, CrO 2 , Si 3 N 4 , ZrO 2 , and P.

20. The sliding member according to claim 18 ,
wherein the solid lubricant comprises at least one of MoS 2 , PTFE, graphite, WS 2 , h-BN, and SB 2 O 3 .

21. The sliding member according to claim 20 ,
wherein the hard material comprises at least one of SiC, Al 2 O 3 , TiN, AlN, CrO 2 , Si 3 N 4 , ZrO 2 , and P.

22. The sliding member according to claim 18 ,
wherein the binder resin comprises at least one of a polyamideimide resin, a polyimide resin, an epoxy resin, a phenolic resin, a polyacetal resin, a polyetheretherketone resin, and a polyphenylene sulfide resin.

23. The sliding member according to claim 22 ,
wherein the solid lubricant comprises at least one of MoS 2 , PTFE, graphite, WS 2 , h-BN, and SB 2 O 3 .

24. The sliding member according to claim 22 ,
wherein the hard material comprises at least one of SiC, Al 2 O 3 , TiN, AlN, CrO 2 , Si 3 N 4 , ZrO 2 , and P.

Assignees

• Taiho Kogyo Co Ltd

Inventors

• Kamiya Shu
• Chitose Toshiyuki
• Tomikawa Takashi
• Kabeya Yasunori
• Yoshimi Taichi

Classifications

• C10N2030/06

  Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure · CPC title

• C10M2221/003

  used as base material · CPC title

• F16C33/206

  with three layers · CPC title

• C10N2040/02

  Bearings · CPC title

• C09D159/00

  Coating compositions based on polyacetals; Coating compositions based on derivatives of polyacetals · CPC title