Pedal simulator
A pedal simulator is disclosed. The pedal simulator according to an embodiment may include a cylinder of which a side is connected to a reservoir storing a pressing medium and another side is connected to a wheel cylinder, the cylinder including an internal space in which the pressing medium is stored, and a piston of which a portion is movable back and forth by a brake pedal inside the cylinder, the piston configured to provide a reaction force corresponding to a pedal effort of the brake pedal while moving back and forth and discharge the pressing medium stored in the internal space of the cylinder toward the wheel cylinder.
1 . A pedal simulator comprising:
a cylinder of which a side is connected to a reservoir storing a pressing medium and another side is connected to a wheel cylinder, the cylinder including an internal space in which the pressing medium is stored; and
a piston of which a portion is movable back and forth by a brake pedal inside the cylinder, the piston configured to provide a reaction force corresponding to a pedal effort of the brake pedal while moving back and forth and discharge the pressing medium stored in the internal space of the cylinder toward the wheel cylinder,
wherein the piston comprises:
a push rod connected to the brake pedal;
a first flange provided at an end to which the push rod is coupled; and
a second flange provided at another end positioned inside the cylinder,
wherein the cylinder further comprises a feeling damper configured to be compressible according to a back-and-forth movement of the piston,
wherein the feeling damper comprises a feeling damper housing configured to fix the feeling damper to the cylinder, and
wherein the feeling damper housing comprises a feeling damper inserting groove which an end of the feeling damper is inserted in and fixed to; and a fixing member coupled to the cylinder.
2 . The pedal simulator of claim 1 , wherein the cylinder comprises:
a small diameter portion configured to guide a back-and-forth movement of the piston; and
a large diameter portion having a larger diameter than the small diameter portion by a step portion.
3 . The pedal simulator of claim 2 , wherein the cylinder further comprises:
an inlet port provided in the small diameter portion to be connected to the reservoir; and
an outlet port provided in the large diameter portion to be connected to the wheel cylinder.
4 . The pedal simulator of claim 3 , wherein the cylinder further comprises a first sealing member and a second sealing member respectively provided at both sides of the inlet port in an axial direction.
5 . The pedal simulator of claim 3 , wherein the cylinder further comprises a first guide bush and a second guide bush respectively provided at both ends of the small diameter portion.
6 . The pedal simulator of claim 1 , wherein the piston further comprises a feeling damper inserting groove which is provided at the other end positioned inside the cylinder and in which a portion of the feeling damper is inserted.
7 . The pedal simulator of claim 6 , wherein the piston further comprises:
a return spring provided between the first flange and the cylinder; and
a piston damper provided between the second flange and the step portion.
8 . The pedal simulator of claim 6 , wherein the piston further comprises
a connection port formed in the feeling damper inserting groove and configured to be connected to or blocked from an inlet port connecting the reservoir to the cylinder according to the back-and-forth movement.
9 . The pedal simulator of claim 6 , wherein the piston further comprises a feeling damper pressing protrusion formed inside the feeling damper inserting groove and configured to press an end of the feeling damper.
10 . A pedal simulator comprising:
a cylinder of which a side is connected to a reservoir storing a pressing medium and another side is connected to a wheel cylinder, the cylinder including an internal space in which the pressing medium is stored; and
a piston of which a portion is movable back and forth by a brake pedal inside the cylinder, the piston configured to provide a reaction force corresponding to a pedal effort of the brake pedal while moving back and forth and discharge the pressing medium stored in the internal space of the cylinder toward the wheel cylinder,
wherein the piston comprises:
a push rod connected to the brake pedal;
a first flange provided at an end to which the push rod is coupled; and
a second flange provided at another end positioned inside the cylinder,
wherein the cylinder further comprises a feeling damper configured to be compressible according to a back-and-forth movement of the piston,
wherein the piston further comprises a feeling damper inserting groove which is provided at the other end positioned inside the cylinder and in which a portion of the feeling damper is inserted, and
wherein the piston further comprises a return spring provided between the first flange and the cylinder; and a piston damper provided between the second flange and the step portion.
11 . The pedal simulator of claim 10 , wherein the cylinder comprises:
a small diameter portion configured to guide a back-and-forth movement of the piston; and
a large diameter portion having a larger diameter than the small diameter portion by a step portion.
12 . The pedal simulator of claim 11 , wherein the cylinder further comprises:
an inlet port provided in the small diameter portion to be connected to the reservoir; and
an outlet port provided in the large diameter portion to be connected to the wheel cylinder.
13 . The pedal simulator of claim 10 , wherein the feeling damper comprises a feeling damper housing configured to fix the feeling damper to the cylinder.
14 . The pedal simulator of claim 10 , wherein the piston further comprises
a connection port formed in the feeling damper inserting groove and configured to be connected to or blocked from an inlet port connecting the reservoir to the cylinder according to the back-and-forth movement.
15 . The pedal simulator of claim 10 , wherein the piston further comprises a feeling damper pressing protrusion formed inside the feeling damper inserting groove and configured to press an end of the feeling damper.
16 . A pedal simulator comprising:
a cylinder of which a side is connected to a reservoir storing a pressing medium and another side is connected to a wheel cylinder, the cylinder including an internal space in which the pressing medium is stored; and
a piston of which a portion is movable back and forth by a brake pedal inside the cylinder, the piston configured to provide a reaction force corresponding to a pedal effort of the brake pedal while moving back and forth and discharge the pressing medium stored in the internal space of the cylinder toward the wheel cylinder,
wherein the piston comprises:
a push rod connected to the brake pedal;
a first flange provided at an end to which the push rod is coupled;
a second flange provided at another end positioned inside the cylinder;
a return spring provided between the first flange and the cylinder; and
a piston damper provided between the second flange and the step portion.
17 . The pedal simulator of claim 16 , wherein the cylinder comprises:
a small diameter portion configured to guide a back-and-forth movement of the piston; and
a large diameter portion having a larger diameter than the small diameter portion by a step portion.
18 . The pedal simulator of claim 17 , wherein the cylinder further comprises:
an inlet port provided in the small diameter portion to be connected to the reservoir; and
an outlet port provided in the large diameter portion to be connected to the wheel cylinder.
19 . The pedal simulator of claim 18 , wherein the cylinder further comprises a first sealing member and a second sealing member respectively provided at both sides of the inlet port in an axial direction.
20 . The pedal simulator of claim 18 , wherein the cylinder further comprises a first guide bush and a second guide bush respectively provided at both ends of the small diameter portion.