Bicycle chain connecting link

Patent metadata

Field	Value
Publication number	US-9494216-B2
Application number	US-201414490637-A
Country	US
Kind code	B2
Filing date	Sep 18, 2014
Priority date	Mar 12, 2014
Publication date	Nov 15, 2016
Grant date	Nov 15, 2016

Abstract

A bicycle chain connecting link comprises a link pin and a link plate. The link pin has a center axis. The link plate comprises an elongated opening, a guiding portion, a first protrusion, and a second protrusion. The elongated opening comprises an insertion opening and an attachment opening connected with the insertion opening. The guiding portion is configured to engage with the groove of the link pin to guide the link pin between the insertion opening and the attachment opening. The first protrusion is provided between the insertion opening and the attachment opening and is configured to be slidable relative to an outer periphery of a head portion of the link pin. The second protrusion is provided between the insertion opening and the attachment opening and is configured to be slidable relative to an outer periphery of an intermediate portion of the link pin.

First claim

What is claimed is:

1. A bicycle chain connecting link comprising:
a link pin having a center axis and comprising:
a main-body extending along the center axis;
a head portion spaced apart from the main-body along the center axis; and
an intermediate portion provided between the main-body and the head portion and coupling the head portion to the main-body, the intermediate portion having an outer diameter smaller than an outer diameter of the main-body and than an outer diameter of the head portion to define a groove between the main-body and the head portion; and

a link plate comprising:
an elongated opening to which the link pin is removably attached, the elongated opening comprising:
an insertion opening; and
an attachment opening connected with the insertion opening;

a guiding portion configured to engage with the groove of the link pin to guide the link pin between the insertion opening and the attachment opening;
a wall extending from an upper surface of the guiding portion;
a first protrusion provided between the insertion opening and the attachment opening and configured to be slidable relative to an outer periphery of the head portion, the first protrusion extending between adjacent portions of the wall that do not include the first protrusion; and
a second protrusion provided between the insertion opening and the attachment opening and configured to be slidable relative to an outer periphery of the intermediate portion.

2. The bicycle chain connecting link according to claim 1 , wherein
a total length of the guiding portion and the first protrusion is defined in an axial direction parallel to the center axis, and
the total length of the guiding portion and the first protrusion is longer than a minimum axial distance defined between the head portion and the main-body in the axial direction parallel to the center axis.

3. The bicycle chain connecting link according to claim 2 , wherein
an axial length of the second protrusion is defined in the axial direction, and
the axial length of the second protrusion is shorter than the minimum axial distance.

4. The bicycle chain connecting link according to claim 1 , wherein
the link plate further comprises
an additional guiding portion configured to engage with the groove of the link pin to guide the link pin between the insertion opening and the attachment opening,
a third protrusion provided between the insertion opening and the attachment opening and configured to be slidable relative to the outer periphery of the head portion, and
a fourth protrusion provided between the insertion opening and the attachment opening and configured to be slidable relative to an outer periphery of the intermediate portion.

5. The bicycle chain connecting link according to claim 4 , wherein
a total length of the additional guiding portion and the third protrusion is defined in the axial direction, and
the total length of the additional guiding portion and the third protrusion is longer than the minimum axial distance.

6. The bicycle chain connecting link according to claim 5 , wherein
an axial length of the fourth protrusion is defined in the axial direction, and
the axial length of the fourth protrusion is shorter than the minimum axial distance.

7. The bicycle chain connecting link according to claim 4 , wherein
the third protrusion is spaced apart from the first protrusion to define a first minimum distance between the first protrusion and the third protrusion,
the first minimum distance is shorter than the outer diameter of the head portion,
the fourth protrusion is spaced apart from the second protrusion to define a second minimum distance between the second protrusion and the fourth protrusion, and
the second minimum distance is shorter than the outer diameter of the intermediate portion.

8. The bicycle chain connecting link according to claim 7 , wherein
the additional guiding portion is spaced apart from the guiding portion to define a sliding-passage width between the guiding portion and the additional guiding portion,
the first minimum distance between the first protrusion and the third protrusion is longer than the sliding-passage width defined at a position at which the first minimum distance is defined when viewed from the axial direction, and
the second minimum distance between the second protrusion and the fourth protrusion is shorter than the sliding-passage width defined at a position at which the second minimum distance is defined when viewed from the axial direction.

9. The bicycle chain connecting link according to claim 4 , wherein
the first protrusion is arranged to come into contact with the head portion disposed in the attachment opening at a first timing,
the second protrusion is arranged to come into contact with the intermediate portion disposed in the attachment opening at a second timing,
the third protrusion is arranged to come into contact with the head portion disposed in the attachment opening at a third timing,
the fourth protrusion is arranged to come into contact with the intermediate portion disposed in the attachment opening at a fourth timing, and
at least two of the first timing, the second timing, the third timing, and the fourth timing are different from each other.

10. The bicycle chain connecting link according to claim 4 , wherein
the first protrusion is arranged to come into contact with the head portion disposed in the attachment opening at a first timing,
the second protrusion is arranged to come into contact with the intermediate portion disposed in the attachment opening at a second timing,
the third protrusion is arranged to come into contact with the head portion disposed in the attachment opening at a third timing,
the fourth protrusion is arranged to come into contact with the intermediate portion disposed in the attachment opening at a fourth timing, and
at least two of the first timing, the second timing, the third timing, and the fourth timing are equal to each other.

11. A bicycle chain connecting link comprising:
a first link pin having a first center axis and comprising:
a first main-body extending along the first center axis;
a first head portion spaced apart from the first main-body along the first center axis; and
a first intermediate portion provided between the first main-body and the first head portion and coupling the first head portion to the first main-body, the first intermediate portion having an outer diameter smaller than an outer diameter of the first main-body and than an outer diameter of the first head portion to define a first groove between the first main-body and the first head portion;

a second link pin having a second center axis and comprising:
a second main-body extending along the second center axis;
a second head portion spaced apart from the second main-body along the second center axis; and
a second intermediate portion provided between the second main-body and the second head portion and coupling the second head portion to the second main-body, the second intermediate portion having an outer diameter smaller than an outer diameter of the second main-body and than an outer diameter of the second head portion to define a second groove between the second main-body and the second head portion;

a first link plate comprising:
a first securing portion to which the first main-body of the first link pin is secured; and
a first elongated opening to which the second link pin is removably attached, the first elongated opening comprising:
a first insertion opening; and
a first attachment opening connected with the first insertion opening;

a first guiding portion configured to engage with the second gr

Assignees

• Shimano Kk

Inventors

• Fukumori Tsuyoshi

Classifications

• F16G13/06

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

• F16G15/04 Primary

  Quickly-detachable chain couplings; Shackles {chain links with rapid junction means are classified according to the corresponding kind of chain} · CPC title

• F16G15/12 Primary

  Chain links · CPC title