Brake booster and brake device including a brake booster of this type

  • US 10,604,133 B2
  • Filed: 07/13/2016
  • Issued: 03/31/2020
  • Est. Priority Date: 09/14/2015
  • Status: Active Grant
First Claim
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1. A brake booster for a brake master cylinder of a motor vehicle, comprising:

  • a drive motor; and

    a transmission, the drive motor connected via the transmission to a pressure piston for the brake master cylinder, the transmission including a rotatable spindle nut having an inner thread and a rotatably fixed axially displaceable spindle rod having an outer thread, the threads engaging one another in order to convert a rotational movement of the drive motor into a translational movement of the spindle rod, and the spindle nut including an outer toothing, which is engaged with a toothing of a drive wheel of the transmission;

    wherein the spindle nut is displaceable axially relative to the drive wheel and is co-axial with the drive wheel.

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