Slide component, bicycle component, bicycle rear sprocket, bicycle front sprocket, bicycle chain, and method of manufacturing slide component

Patent metadata

Field	Value
Publication number	US-10352428-B2
Application number	US-201615083235-A
Country	US
Kind code	B2
Filing date	Mar 28, 2016
Priority date	Mar 28, 2016
Publication date	Jul 16, 2019
Grant date	Jul 16, 2019

Abstract

A slide component comprises a base member and a plated layer. The base member is made of a titanium alloy including beta phase of titanium. The base member includes a surface having a plurality of recesses. The plated layer is provided on the surface of the base member.

First claim

What is claimed is:

1. A slide component comprising:
a base member made of a titanium alloy including alpha phase of titanium and beta phase of titanium, the base member including a surface having a plurality of recesses formed by removing at least part of the alpha phase of titanium without removing the beta phase of titanium from the titanium alloy; and
a plated layer provided on the surface of the base member.

2. The slide component according to claim 1 , wherein the alpha phase of titanium is partly replaced with zinc.

3. The slide component according to claim 1 , wherein
the plated layer includes nickel.

4. The slide component according to claim 1 , wherein
the plurality of recesses include at least one recess having a first length that ranges between 50 nanometers and 150 nanometers.

5. The slide component according to claim 4 , wherein
the at least one recess having a second length that ranges between 1 micrometer and 10 micrometers.

6. A bicycle component comprising the slide component according to claim 1 .

7. A bicycle rear sprocket comprising the slide component according to claim 1 .

8. A bicycle front sprocket comprising the slide component according to claim 1 .

9. A slide component comprising:
a base member made of a titanium alloy including alpha phase of titanium and beta phase of titanium, the base member comprising:
an internal portion in which the titanium alloy has a first density of the alpha phase of titanium; and
a border portion provided on the internal portion, the titanium alloy having a second density of the alpha phase of titanium in the border portion, the second density being lower than the first density; and

a plated layer provided on the border portion.

10. The slide component according to claim 9 , wherein
the border portion further includes zinc.

11. The slide component according to claim 9 , wherein
the plated layer includes nickel.

12. A bicycle component comprising the slide component according to claim 9 .

13. A bicycle rear sprocket comprising the slide component according to claim 9 .

14. A bicycle front sprocket comprising the slide component according to claim 9 .

15. A slide component comprising:
a base member made of a titanium alloy, the base member comprising:
an internal portion including alpha phase of titanium and beta phase of titanium; and
a border portion provided on the internal portion, the border portion including zinc and the beta phase of titanium, the border portion including a surface having a plurality of recesses, the plurality of recesses being formed by replacing at least part of the alpha phase of titanium with zinc without replacing the beta phase of titanium; and

a plated layer provided on the border portion.

16. The slide component according to claim 15 , wherein
each of the plurality of recesses has a longest length that ranges between 1 micrometer and 10 micrometers in a longitudinal direction along the surface,
each of the plurality of recesses has a lateral longest length in a lateral direction perpendicular to the longitudinal direction, and
the lateral longest length ranges between 50 nanometers and 150 nanometers along the surface.

17. A slide component comprising:
a base member made of a titanium alloy including alpha phase of titanium and beta phase of titanium, the base member comprising:
an internal portion in which the titanium alloy has a first density of the alpha phase of titanium; and
a border portion provided on the internal portion, the titanium alloy having a second density of the alpha phase of titanium in the border portion, the second density being lower than the first density; and

a plated layer provided on the border portion, the slide component being manufactured with a method comprising:
providing the base member, the base member including a surface;
removing at least part of the alpha phase of titanium without removing the beta phase of titanium at the surface of the base member to provide the border portion at the surface of the base member and the internal portion inside the border portion; and
plating the border portion to dispose the plated layer on the border portion.

18. A slide component comprising:
a base member made of a titanium alloy, the base member comprising an internal portion including alpha phase of titanium and beta phase of titanium and a border portion provided on the internal portion, the border portion including zinc and the beta phase of titanium; and
a plated layer provided on the border portion, the slide component being manufactured with a method comprising:
providing the base member made of the titanium alloy including the alpha phase of titanium and the beta phase of titanium, the base member including a surface;
replacing at least part of the alpha phase of titanium with zinc without replacing the beta phase of titanium at the surface of the base member with zinc to provide the border portion at the surface of the base member and the internal portion inside the border portion; and
plating the border portion to dispose the plated layer on the border portion.

19. A slide component comprising:
a base member made of a titanium alloy including alpha phase of titanium and beta phase of titanium, the base member including a surface having a plurality of recesses, each of the plurality of recesses having a longest length that ranges between 1 micrometer and 10 micrometers in a longitudinal direction along the surface, each of the plurality of recesses having a lateral longest length in a lateral direction perpendicular to the longitudinal direction, the lateral longest length ranging between 50 nanometers and 150 nanometers along the surface;
a plated layer provided on the surface of the base member, the plated layer including a first metallic material; and
a second metallic material positioned in at least one of the plurality of recesses between the base member and the plated layer, the second metallic material being different from titanium and the first metallic material.

20. The slide component according to claim 19 , wherein
the first metallic material is nickel.

21. The slide component according to claim 19 , wherein
the second metallic material is zinc.

22. A slide component comprising:
a base member made of a titanium alloy including alpha phase of titanium and beta phase of titanium, the base member comprising:
an internal portion in which the titanium alloy has a first density of the alpha phase of titanium; and
a border portion provided on the internal portion, the titanium alloy having a second density of the alpha phase of titanium in the border portion, the second density being lower than the first density; and

an abrasion-resistant layer provided on the base member, the abrasion-resistant layer being made of a material selected from a group consisting of titanium carbide (TiC), titanium carbonitride (TiCN), and titanium nitride (TiN).

23. A bicycle sprocket comprising the slide component according to claim 22 .

24. A bicycle chain comprising the slide component according to claim 22 .

25. At least one of a pin member and a roller member of a bicycle chain comprising the slide component according to claim 22 .

Assignees

• Shimano Kk

Inventors

• Yokozawa Dai
• Yamauchi Wataru
• Komada Michiaki
• Oi Takeshi

Classifications

• B62M9/10 Primary

  involving different-sized wheels, {e.g. rear sprocket chain wheels} selectively engaged by the chain, belt, or the like {(bicycle hubs rotatably arranged on axle B60B27/023)} · CPC title

• F16G13/06

  with links connected by parallel driving-pins with or without rollers {so-called open links} · CPC title

• B62M9/131

  Front derailleurs · CPC title

• C23F1/26

  for etching refractory metals · CPC title

• B62M9/121

  Rear derailleurs · CPC title