Front gear changer

Patent metadata

Field	Value
Publication number	US-10876607-B2
Application number	US-201715794590-A
Country	US
Kind code	B2
Filing date	Oct 26, 2017
Priority date	Oct 18, 2012
Publication date	Dec 29, 2020
Grant date	Dec 29, 2020

Abstract

An electromechanical front gear changer for a bicycle is provided, the bicycle having a chain, including a base member attachable to the bicycle. A linkage is movably coupled to the base member. A chain guide is movably coupled to the linkage for contacting the chain. A motor is supported by the base member. A gear transmission is driven by the motor to move the linkage. A CPU is provided for controlling the motor and a power supply is supported by the base member to power the motor and the CPU. A manually operated device is disposed on the electromechanical front gear changer.

First claim

The invention claimed is:

1. An electromechanical front derailleur for a bicycle having a chain and one or more shift units, comprising:
a base member attachable to the bicycle;
a printed circuit board assembly (PCBA) supported by the base member;
a linkage movably coupled to the base member;
a chain guide movably coupled to the linkage for contacting the chain;
a motor supported by the base member;
a gear transmission driven by the motor to move the linkage;
a processor for controlling the motor;
a power supply powering at least one of the motor and the processor;
a wireless communicator on the PCBA; and
an electrical switch supported by the base member in operative communication with the processor configured to cause a first change of state of the electromechanical front derailleur and to cause a second change of state of the electromechanical front derailleur, wherein the first change of state pairs the electromechanical front derailleur with the one or more shift units and the second change of state causes the chain guide to produce a change of position, and wherein the first change of state and the second change of state are executed independently of each other.

2. The electromechanical front derailleur of claim 1 , wherein the electrical switch is activated by a button on the base member.

3. The electromechanical front derailleur of claim 1 , configured such that the change of position causes the chain guide to trim.

4. The electromechanical front derailleur of claim 1 , configured such that the change of position causes a gear shift.

Assignees

• Sram Llc

Inventors

• Shipman Christopher
• Jordan Brian
• Santurbane Mark

Classifications

• B62M9/132 Primary

  electrically or fluid actuated; Controls thereof · CPC title

• F16H9/06 Primary

  engaging a stepped pulley · CPC title

• B62M9/122

  electrically or fluid actuated; Controls thereof · CPC title

• B62J43/30

  for providing power to equipment other than for propulsion · CPC title

• B62J43/20

  characterised by the mounting · CPC title