Electronic rear derailleur
US-2015259031-A1 · Sep 17, 2015 · US
Electrical bicycle derailleur
US2017166281A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2017166281-A1 |
| Application number | US-201514968873-A |
| Country | US |
| Kind code | A1 |
| Filing date | Dec 14, 2015 |
| Priority date | Dec 14, 2015 |
| Publication date | Jun 15, 2017 |
| Grant date | — |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
An electrical bicycle derailleur includes a base member and a movable member movably arranged between a retracted position and an extended position. A linkage operatively couples the movable member to the base member. The linkage includes a first link member and a second link member. The first link member is disposed closer to the base member than the second link member. A motor unit is operatively coupled to the first and second link members to rotate the first and second link members. A linkage housing is configured to support the first and second link members and the motor unit. A first diameter of the first link member is different from a second diameter of the second link member and/or a first tooth number of the first link member is different from a second tooth number of the second link member.
First claim
Opening claim text (preview).
1 . An electrical bicycle derailleur comprising: a base member; a movable member movably arranged between a retracted position and an extended position; a linkage operatively coupling the movable member to the base member, the linkage including a first link member and a second link member, the first link member being disposed closer to the base member than the second link member; a motor unit operatively coupled to the first and second link members to rotate the first and second link members; and a linkage housing configured to support the first and second link members and the motor unit, at least one of a first diameter of the first link member being different from a second diameter of the second link member and a first tooth number of the first link member being different from a second tooth number of the second link member. 2 . The electrical bicycle derailleur according to claim 1 , wherein the first link member includes a first gear member connected to the base member, and the second link member includes a second gear member connected to the movable member. 3 . The electrical bicycle derailleur according to claim 1 , wherein the first diameter of the first link member is larger than the second diameter of the second link member. 4 . The electrical bicycle derailleur according to claim 1 , wherein the first diameter of the first link member is smaller than the second diameter of the second link member. 5 . The electrical bicycle derailleur according to claim 1 , wherein the first tooth number of the first link member is larger than the second tooth number of the second link member. 6 . The electrical bicycle derailleur according to claim 1 , wherein the first tooth number of the first link member is smaller than the second tooth number of the second link member. 7 . The electrical bicycle derailleur according to claim 1 , wherein the linkage housing includes an internal space in which the first and second link members and the motor unit are at least partly disposed. 8 . The electrical bicycle derailleur according to claim 1 , wherein the first link member directly engages the second link member. 9 . The electrical bicycle derailleur according to claim 1 , wherein at least one belt member operatively couples the first link member and the second link member such that rotation of the one of the first and second link members is transmitted to the other of the first and second link members via the at least one belt member, the motor unit being configured to rotate the second link member. 10 . The electrical bicycle derailleur according to claim 1 , wherein the linkage further includes a third link member disposed between the first and second link members, the third link member operatively engages the first and second link members, and the linkage housing is configured to support the third link member. 11 . The electrical bicycle derailleur according to claim 10 , wherein the linkage housing includes an internal space in which the first, second, and third link members and the motor unit are at least partly disposed. 12 . The electrical bicycle derailleur according to claim 10 , wherein the first link member includes a first gear member connected to the base member, the second link member includes a second gear member connected to the movable member, and the third link member includes a third gear member disposed between the first and second gear members. 13 . The electrical bicycle derailleur according to claim 10 , wherein the third link member directly engages the first and second link members. 14 . The electrical bicycle derailleur according to claim 10 , wherein at least one belt member operatively couples the third link member and at least one of the first and second link members such that rotation of the third link member rotates the at least one of the first and second link members via the at least one belt member. 15 . The electrical bicycle derailleur according to claim 1 , wherein a first rotational direction of the first link member and a second rotational direction of the second link member are opposite. 16 . The electrical bicycle derailleur according to claim 1 , wherein the motor unit includes an electrical motor and a speed reduction gear assembly, the electrical motor outputs drive power via the speed reduction gear assembly. 17 . The electrical bicycle derailleur according to claim 2 , wherein the first link member includes a first axle coaxially arranged with the first gear member, and the second link member includes a second axle coaxially arranged with the second gear member. 18 . The electrical bicycle derailleur according to claim 12 , wherein the first link member includes a first axle coaxially arranged with the first gear member, the second link member includes a second axle coaxially arranged with the second gear member, and the third link member includes a third axle coaxially arranged with the third gear member.
Assignees
Inventors
Classifications
- B62M9/122Primary
electrically or fluid actuated; Controls thereof · CPC title
Rear derailleur comprising a rigid pivoting arm · CPC title
Mounting the derailleur on the frame · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US2017166281A1 cover?
- An electrical bicycle derailleur includes a base member and a movable member movably arranged between a retracted position and an extended position. A linkage operatively couples the movable member to the base member. The linkage includes a first link member and a second link member. The first link member is disposed closer to the base member than the second link member. A motor unit is operati…
- Who is the assignee on this patent?
- Shimano Kk
- What technology area does this patent fall under?
- Primary CPC classification B62M9/122. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Thu Jun 15 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).