Brake apparatus for vehicle
AssigneeHyundai Mobis Co., Ltd.
InventorSang Bum Kim
Life of this patent
Estimating the term…
Abstract
A brake apparatus for a vehicle includes a screw bar positioned inside a caliper body, and rotated by receiving power of a driving motor; a nut unit including a nut which surrounds the screw bar, and a nut holder which is threadedly coupled with the screw bar, is movable on the nut and is moved toward a pad member by rotation of the screw bar; and a piston unit surrounding the nut unit, and pressing the pad member, wherein the nut holder is brought into contact with the piston unit while being moved toward the pad member, and moves the nut such that the nut pushes the piston unit.
Claims8
A brake apparatus for a vehicle, comprising:
- a screw bar connected to a driving motor and configured to rotate based on a rotary power from the driving motor;
- a nut unit configured to move toward a pad member in response to a rotation of the screw bar, the nut unit including:
- a nut surrounding the screw bar;
- and
- a nut holder threaded to the screw bar and configured to move toward the pad member by the rotation of the screw bar;
- and
- a piston unit having an inner surface surrounding the nut unit and configured to press the pad member when pushed by the nut unit toward the pad member,
- wherein the nut holder is spaced apart from the inner surface of the piston when the screw bar is not rotated, and
- wherein the nut is configured, when the nut holder moves toward the pad member by the rotation of the screw bar, to push the nut holder toward the inner surface of the piston unit such that the nut holder contacts the inner surface of the piston.
A brake apparatus for a vehicle, comprising:
- a screw bar positioned inside a caliper body, and rotated by receiving power of a driving motor;
- a nut unit including a nut which surrounds the screw bar, and a nut holder which is threaded to the screw bar, is movable on the nut and is moved toward a pad member by rotation of the screw bar;
- and
- a piston unit surrounding the nut unit, and pressing the pad member,
- wherein the nut holder is brought into contact with the piston unit while being moved toward the pad member, and moves the nut such that the nut pushes the piston unit, and
- wherein the nut holder comprises:
- a moving block threaded to the screw bar, and moved on the nut;
- and
- a contact module section rotatably coupled to the moving block, moved together with the moving block, and brought into contact with the piston unit while being moved toward the pad member.
Dependencies are inferred from the claim text.