Brake device, e.g. with an eccentric element, for braking a traveling body that can be moved in a guided manner along a guide rail in a movement direction

A brake device for braking a traveling body of an elevator installation, the traveling body being movable in a guided manner along a guide rail in a movement direction, the brake device comprising:

• a holder adapted to be attached to the traveling body;
• a brake element;
• a pretensioning element;
• a release element;
• a friction-generating element;
• wherein the brake element is mounted and retained on the holder and has a brake surface directed toward the guide rail when the holder is attached to the traveling body, the brake element being movable relative to the holder between a freewheel position and a braking position, wherein the brake surface is laterally spaced apart from the guide rail in the freewheel position and is pressed laterally against the guide rail in the braking position;
• wherein the pretensioning element, in a deactivated configuration, does not exert a force on the brake element to move the brake element toward the braking position and, in an activated configuration, exerts a force on the brake element that moves the brake element toward the braking position;
• wherein the release element, in a retaining state, retains the pretensioning element in the deactivated configuration and, when the release element is in a released state, changes the pretensioning element from the deactivated configuration into the activated configuration;
• and
• wherein the friction-generating element, in an unactuated state, cannot generate any friction by abutting the guide rail and therefore does not exert any force resulting from such friction on the brake element and, in an actuated state, the friction-generating element generates friction by abutting the guide rail to exert a force resulting from the generated friction on the brake element, which force forces the brake element in a direction towards the freewheel position.