Brake system having spindle/nut assembly providing soft stop
A brake system comprises: a caliper housing having a bore formed therein; a brake piston slidably positioned in the bore of the caliper housing; and a spindle/nut assembly associated with the brake piston. The spindle/nut assembly comprises: a spindle; a spindle nut operably engaged with the spindle; and a disc type spring comprising a curved plate radially surrounding the spindle. The disc type spring is disposed between the spindle nut and the spindle to provide a resilient force between the spindle nut and the spindle. The disc type spring prevents the hard stop of the brake piston to the spindle/nut assembly and provide a soft stop. The disc type spring decreases a shock to the brake system, increases the durability of the spindle/nut assembly, and decrease the cost of the brake system.
1. A brake system, comprising:
a caliper housing having a bore formed therein;
a brake piston slidably positioned in the bore of the caliper housing; and
a spindle/nut assembly associated with the brake piston, the spindle/nut assembly comprising:
a spindle;
a spindle nut operably engaged with the spindle; and
a disc type spring comprising a curved plate radially surrounding the spindle, wherein the disc type spring is disposed between the spindle nut and the spindle to provide a resilient force between the spindle nut and the spindle.
2. The brake system of claim 1 , wherein the disc type spring is positioned between an end of the spindle nut and a projecting part of the spindle.
3. The brake system of claim 2 , wherein the projecting part of the spindle comprises a flange formed or positioned on the spindle.
4. The brake system of claim 1 , wherein the disc type spring is configured to provide the resilient force against a movement of the spindle nut toward the spindle.
5. The brake system of claim 1 , wherein the spindle is configured to be rotatably driven and the spindle nut is configured to be movable in a linear direction in response to a rotation movement of the spindle.
6. The brake system of claim 1 , wherein the spindle nut is configured to be rotatably driven and the spindle is configured to be movable in a linear direction in response to rotation of the spindle nut.
7. The brake system of claim 1 , wherein the disc type spring comprises one or more washers.
8. The brake system of claim 1 , wherein the disc type spring comprises a Belleville washer.
9. The brake system of claim 1 , wherein the disc type spring comprises a washer having a wave shape in an axial direction of the spindle/nut assembly.
10. The brake system of claim 1 , wherein the disc type spring comprises a washer having a helical shape split at one point.
11. The brake system of claim 1 , wherein the disc type spring comprises a curved washer.
12. The brake system of claim 11 , wherein the curved washer is curved in an axial direction of the spindle/nut assembly.
13. The brake system of claim 1 , wherein the disc type spring comprises a plurality of curved washers stacked on each other.
14. The brake system of claim 1 , wherein:
the spindle comprises a flange, and
the disc type spring is positioned between an end of the spindle nut facing the spindle and a surface of the flange of the spindle facing the spindle nut.