Caliper with internal motor
AssigneeDelphi Technologies, Inc.
InventorsDavid B. Drennen, Ernest R. Siler, Gary C. Fulks, Douglas E. Poole
Life of this patent
Estimating the term…
Abstract
A brake caliper comprises a motor having a shaft, at least one first planetary gear, and at least one second planetary gear. The at least one first planetary gear is rotatably engaged with the shaft and with a piston, and is operatively engaged with a first carrier. The at least one second planetary gear is operatively engaged with the first stage carrier and with a second carrier. A ball screw is engaged with the second stage carrier for rotation therewith, and a ball screw nut is operatively engaged with the ball screw. A parking brake for the caliper is also provided.
Claims14
A brake caliper comprising:
- a housing having a bore;
- a piston disposed in the bore;
- a motor having a shaft;
- at least one first planetary gear rotatably engaged with the shaft and with an inside diameter of the piston, the at least one first planetary gear being operatively engaged with a first stage carrier;
- at least one second planetary gear operatively engaged with the first stage carrier, the at least one second planetary gear being operatively engaged with a second stage carrier;
- a ball screw engaged with the second stage carrier for rotation therewith;
- and
- a ball screw nut operatively engaged with the ball screw.
An electric brake caliper for a motor vehicle, the electric brake caliper comprising:
- a housing having a bore;
- a piston disposed in the bore;
- an electric motor having a shaft extending into the piston;
- at least one first planetary gear rotatably engaged with the shaft and with an inside diameter of the piston, the at least one first planetary gear being operatively engaged with a first stage carrier;
- at least one second planetary gear operatively engaged with the first stage carrier, the at least one second planetary gear being operatively engaged with a second stage carrier;
- a ball screw engaged with the second stage carrier for rotation therewith;
- and
- a ball screw nut operatively engaged with the ball screw.
A parking brake for an electric caliper having a motor shaft, the electric caliper comprising:
- a pulley mounted proximate an end of the motor shaft, the pulley having a plurality of teeth;
- a park brake lever movable between an unapplied position and an applied position;
- a magnet for holding the park brake lever in the unapplied position;
- and
- a solenoid for moving the park brake lever to the applied position, the park brake lever in the applied position engaging the teeth of the pulley.
A brake caliper comprising:
- a housing having a bore;
- a piston disposed in the bore;
- a motor having a shaft;
- at least one first planetary gear rotatably engaged with the shaft and with the piston, the at least one first planetary gear being operatively engaged with a first stage carrier;
- at least one second planetary gear operatively engaged with the first stage carrier, the at least one second planetary gear being operatively engaged with a second stage carrier and rotatably engaged with an inside diameter of the piston;
- a ball screw engaged with the second stage carrier for rotation therewith;
- and
- a ball screw nut operatively engaged with the ball screw.
An electric brake caliper for a motor vehicle, the electric brake caliper comprising:
- a housing having a bore;
- a piston disposed in the bore;
- an electric motor having a shaft extending into the piston;
- at least one first planetary gear rotatably engaged with the shaft and with the piston, the at least one first planetary gear being operatively engaged with a first stage carrier;
- at least one second planetary gear operatively engaged with the first stage carrier, the at least one second planetary gear being operatively engaged with a second stage carrier and rotatably engaged with an inside diameter of the piston;
- a ball screw engaged with the second stage carrier for rotation therewith;
- and
- a ball screw nut operatively engaged with the ball screw.
Dependencies are inferred from the claim text.