Elevator brake

An elevator brake for braking and holding an elevator car in an elevator installation, the elevator brake comprising:

• a first brake lining and a second brake lining spaced apart by a gap;
• a first actuation device for actuating the first brake lining, wherein the first actuation device includes a first advancing device and an energy store, wherein the energy store is a spring accumulator and wherein the first advancing device includes an electromagnetic holding and catch device that holds the energy store in a loaded state and selectively releases the energy store;
• wherein the electromagnetic holding and catch device includes a plurality of electromagnets that act directly or indirectly on the energy store of the first advancing device by a lever distribution, wherein all of the magnets of the plurality of electromagnets are activated for a return of the first actuation device into a standby position, and a partial quantity of the plurality of electromagnets are activated for holding the first actuation device in the loaded state of the energy store, or
• wherein the electromagnetic holding and catch device includes a traction means that holds the first brake lining in a standby position, the traction means being looped around a bollard or a capstan and held via a free end of the traction means by at least one electromagnet.

An elevator installation having an elevator car that traverses along a guide rail, comprising:

• at least one elevator brake fixed to the elevator car for acting on a brake web arranged on the guide rail, the at least one elevator brake comprising:
• a first brake lining and a second brake lining spaced apart by a gap;
• a first actuation device for actuating the first brake lining, wherein the first actuation device includes a first advancing device and an energy store, wherein the energy store is a spring accumulator and wherein the first advancing device includes an electromagnetic holding and catch device that holds the energy store in a loaded state and selectively releases the energy store;
• and
• wherein the electromagnetic holding and catch device includes a plurality of electromagnets that act directly or indirectly on the energy store of the first advancing device by a lever distribution, wherein all of the magnets of the plurality of electromagnets are activated for a return of the first actuation device into a standby position, and a partial quantity of the plurality of electromagnets are activated for holding the first actuation device in the loaded state of the energy store, or
• wherein the electromagnetic holding and catch device includes a traction means that holds the first brake lining in a standby position, the traction means being looped around a bollard or a capstan and held via a free end of the traction means by at least one electromagnet.

A method for returning and subsequently holding an elevator brake of an elevator installation in a standby position, the method comprising the steps of:

• actuating the elevator brake to a working position, the elevator brake having a first brake lining and a second brake lining engaging a guide rail in the working position, wherein the elevator brake includes a first actuation device for actuating the first brake lining, wherein the first actuation device includes a first advancing device and an energy store, wherein the energy store is a spring accumulator and wherein the first advancing device includes an electromagnetic holding and catch device that holds the energy store in a loaded state and selectively releases the energy store, wherein the electromagnetic holding and catch device includes a plurality of electromagnets that act directly or indirectly on the energy store of the first advancing device by a lever distribution;
• switching on the plurality of electromagnets to return the elevator brake from the working position to the standby position;
• and
• subsequently switching off a partial quantity of the plurality of electromagnets to hold the elevator brake in the standby position.