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US 10,875,516 B2Granted
Actuator of electronic brake system
AssigneeMando Corporation
InventorYoungsong Lee
Life of this patent
Estimating the term…
Abstract
Disclosed is an actuator of an electronic brake system including: a motor having a stator and a rotor for generating a rotational force by an electrical signal, the rotor having an accommodating space therein; a power conversion unit disposed in the accommodating space, and including a spindle rotated by a rotational force of the rotor and a nut coupled to the spindle to be linearly moved by rotation of the spindle; a piston coupled to move with the nut; and a sleeve coupled to one end of the rotor by a bearing so that the rotor is relatively rotatable and having an inner space communicating with the accommodating space and accommodating the piston so as to be able to move forward and backward.
Claims16
An actuator of an electronic brake system comprising:
- a motor having a stator and a rotor for generating a rotational force by an electrical signal, the rotor having an accommodating space therein;
- a power conversion unit disposed in the accommodating space, and including a spindle rotated by a rotational force of the rotor and a nut coupled to the spindle to be linearly moved by rotation of the spindle;
- a piston coupled to move with the nut;
- a sleeve coupled to one end of the rotor by a hearing so that the rotor is relatively rotatable and having an inner space communicating with the accommodating space and accommodating the piston so as to be able to move forward and backward;
- and
- a disk provided inside the accommodating space of the rotor, a first protrusion protruding from the disk, and a second protrusion provided on a side of the nut facing the disk, to prevent the rotation of the spindle and the nut from being locked.
3 more elements
An actuator of an electronic brake system comprising:
- a motor having a stator and a rotor for generating a rotational force by an electrical signal, the rotor having an accommodating space therein;
- a power conversion unit disposed in the accommodating space, and including a spindle rotated by a rotational force of the rotor and a nut coupled to the spindle to be linearly moved by rotation of the spindle;
- a piston coupled to move with the nut;
- and
- a sleeve coupled to one end of the rotor by a bearing so that the rotor is relatively rotatable and having an inner space communicating with the accommodating space and accommodating the piston so as to be able to move forward and backward,
- wherein the rotor is opened at one end and has a cross-shaped groove or a protrusion at the other end,
- wherein the actuator further comprises a gap regulating unit coupling the spindle and the rotor through the cross-shaped groove or the protrusion of the rotor and allowing the power conversion unit to move up, down, left, and right by a certain gap,
- wherein the gap regulating unit includes a regulating member coupled with upper and lower sides of the cross-shaped groove or the projection so as to be coupled with the spindle between the rotor and the power conversion unit and to be moved in the up-down direction by a certain gap and to be fixed in the left-right direction,
- wherein a coupling hole through which the spindle is coupled is formed in the center of the regulating member, and the coupling hole has a predetermined length in the left-right direction and is formed in a non-circular shape, and
- wherein a clearance is formed in the left-right direction between the coupling hole and the spindle.
7 more elements
An actuator of an electronic brake system comprising:
- a motor having a stator and a rotor for generating a rotational force by an electrical signal, the rotor having an accommodating space therein;
- a power conversion unit disposed in the accommodating space, and including a spindle rotated by a rotational force of the rotor and a nut coupled to the spindle to be linearly moved by rotation of the spindle;
- a piston coupled to move with the nut;
- and
- a sleeve coupled to one end of the rotor by a bearing so that the rotor is relatively rotatable and having an inner space communicating with the accommodating space and accommodating the piston so as to be able to move forward and backward,
- wherein the rotor is opened at one end and has a cross-shaped groove or a protrusion at the other end,
- wherein the actuator further comprises a gap regulating unit coupling the spindle and the rotor through the cross-shaped groove or the protrusion of the rotor and allowing the power conversion unit to move up, down, left, and right by a certain gap,
- wherein the gap regulating unit includes:
- a first regulating member coupled with upper and lower sides of the cross-shaped groove or the projection so as to be coupled with the spindle between the rotor and the power conversion unit and to be moved in the up-down direction by a certain gap but to be fixed in the left-right direction;
- a second regulating member coupled to left and right sides of the cross-shaped groove or the protrusion so as to be moved in the left-right direction by a certain gap but to be fixed in the up-down direction;
- and a fastening bolt coupled to the spindle by passing through the first regulating member and the second regulating member, and
- wherein a through hole through which the fastening bolt passes is formed in the center of the second regulating member, and the through hole has a predetermined length in the up-down direction and is formed in a non-circular shape.
9 more elements
Dependencies are inferred from the claim text.