Electromagnetically operable brake arrangement for decelerating a rotationally mounted shaft

Patent metadata

Field	Value
Publication number	US-11536333-B2
Application number	US-201816482587-A
Country	US
Kind code	B2
Filing date	Jan 16, 2018
Priority date	Jan 31, 2017
Publication date	Dec 27, 2022
Grant date	Dec 27, 2022

Abstract

An electromagnetically operable brake arrangement for decelerating a rotationally mounted shaft, includes a magnet, a coil, a spring element, an armature disk, a brake pad support, a damping plate and a friction disk, the damping plate being situated between the armature disk and the magnet; the damping plate having projections; each of the projections extending further in a radial direction than in a circumferential direction; in particular, the projections each jutting out axially; in particular, at least a subset of the projections being evenly spaced apart from each other in the circumferential direction.

First claim

What is claimed is:

1. An electromagnetically operable brake arrangement for decelerating a rotationally mounted shaft, comprising:
a magnet;
a coil;
a spring element;
an armature disk;
a brake pad support;
a damping plate; and
a friction plate;
wherein the damping plate is arranged between the armature disk and the magnet; and
wherein the damping plate includes projections, each of the projections extending further in a radial direction than in a circumferential direction.

2. The brake arrangement according to claim 1 , wherein the projections project axially.

3. The brake arrangement according to claim 1 , wherein at least a subset of the projections are evenly spaced apart from each other in the circumferential direction.

4. The brake arrangement according to claim 1 , wherein each of the projections has a constant width measured in a tangential direction.

5. The brake arrangement according to claim 1 , wherein each of the projections has a width, which is measured in a tangential direction and increases with increasing radial distance.

6. The brake arrangement according to claim 1 , wherein each of the projections has a width, which is measured in a tangential direction and increases monotonically with increasing radial distance.

7. The brake arrangement according to claim 1 , wherein the coil is contained in an annular recess of the magnet, an axis of the annular recess being aligned coaxially with respect to an axis of rotation of the shaft.

8. The brake arrangement according to claim 1 , wherein each of the projections extends radially to the edge of the damping plate.

9. The brake arrangement according to claim 1 , wherein each of the projections extends to a radially outer edge region of the damping plate.

10. The brake arrangement according to claim 1 , wherein each of the projections, in a circumferential angular range covered thereby, covers a radial distance range, having a maximum radial distance value equal to a maximum radial distance value of a radial distance region covered by the damping plate in the same circumferential angular region.

11. The brake arrangement according to claim 1 , wherein each of the projections extends radially to the edge of the damping plate; and/or wherein each of the projections extends to a radially outer edge region of the damping plate; and/or wherein each of the projections, in a circumferential angular range covered thereby, covers a radial distance range, having a maximum radial distance value equal to a maximum radial distance value of a radial distance region covered by the damping plate in the same circumferential angular region.

12. The brake arrangement according to claim 1 , wherein the damping plate is formed of sheet metal.

13. The brake arrangement according to claim 1 , wherein the damping plate is arranged as a stamped and bent metallic part.

14. The brake arrangement according to claim 1 , wherein the coil is contained in an annular recess of the magnet.

15. The brake arrangement according to claim 14 , wherein the coil is encapsulated in the annular recess by potting compound.

16. The brake arrangement according to claim 1 , wherein the spring element is supported in the magnet and presses on the armature disk, so that when power is supplied to the coil, the armature disk is pushed towards the magnet in opposition to a spring force generated by the spring element, and when power is not supplied to the coil, the armature disk is pushed away from the coil and/or from the magnet by the spring element.

17. The brake arrangement according to claim 1 , wherein the armature disk is connected to the magnet in a rotatably fixed, but axially displaceable manner, the brake pad support being connected to the shaft in a rotatably fixed, but axially displaceable manner, the friction plate being connected to the magnet.

18. The brake arrangement according to claim 1 , wherein the friction plate is connected to the magnet in a bayonet joint.

19. The brake arrangement according to claim 1 , wherein the damping plate is arranged as a perforated disk.

20. The brake arrangement according to claim 1 , wherein the damping plate is positioned axially between the coil and the armature disk, the armature disk being positioned axially between the damping plate and the brake pad support, the brake pad support being positioned axially between the armature disk and the friction plate.

21. The brake arrangement according to claim 1 , wherein the shaft has external toothing or a part, which has external toothing and is connected to the shaft in a rotatably fixed manner, the brake pad support having internal toothing that meshes with the external toothing.

22. The brake arrangement according to claim 21 , wherein the brake pad support is connected to the external toothing in a rotatably fixed, but axially displaceable manner.

23. The brake arrangement according to claim 1 , wherein the damping plate has a substantially constant thickness.

24. The brake arrangement according to claim 23 , wherein the thickness of the damping plate, measured in an axial direction, is independent of a radial distance and a circumferential angle.

25. An electromagnetically operable brake arrangement for decelerating a rotationally mounted shaft, comprising:
a magnet;
a coil;
a spring element;
an armature disk;
a damping plate; and
wherein the damping plate is arranged between the armature disk and the magnet; and
wherein the damping plate includes projections, each of the projections extending further in a radial direction than in a circumferential direction.

Assignees

• Sew Eurodrive Gmbh & Co Kg

Inventors

• Fichtner-Pflaum Gerolf

Classifications

• F16D2121/22

  for releasing a normally applied brake · CPC title

• F16D59/02 Primary

  spring-loaded and adapted to be released by mechanical, fluid, or electromagnetic means · CPC title

• F16D65/0006

  Noise or vibration control · CPC title

• F16D55/28

  Brakes with only one rotating disc · CPC title

• F16D65/186

  with full-face force-applying member, e.g. annular · CPC title