Solenoid actuator and brake system including the same
AssigneeHl Mando Corporation
InventorJinseok KIM
Life of this patent
Estimating the term…
Abstract
A solenoid actuator includes a bobbin having a through hole formed inside the bobbin and including a winding part around which a coil is wound along an outer surface of the bobbin, a lower case coupled to a lower side of the bobbin and surrounding the outer surface of the bobbin, a drive part inserted in the through hole of the bobbin to be drivable up and down, a core fixedly disposed above the drive part, and a return spring provided between the drive part and the core and configured to elastically support the drive part such the drive part can return to its original position. The bobbin may include a damper protruding from an inner peripheral surface of the through hole of the bobbin and positioned between the lower case and the drive part.
Claims20
A solenoid actuator comprising:
- a bobbin having a through hole formed inside the bobbin, wherein a coil is wound around the bobbin;
- a case surrounding an outer surface of the bobbin;
- a drive part movably disposed in the through hole of the bobbin to be drivable;
- a core fixedly disposed above the drive part;
- and
- a return spring disposed between the drive part and the core and configured to apply an elastic force to the drive part in a direction of being away from the core,
- wherein the bobbin has a damper positioned between the case and the drive part.
A brake system comprising a ratchet unit configured to prevent reverse brake operation,
- wherein the ratchet unit includes:
- a pawl configured to engageable with a ratchet gear configured to be rotatable according to a force generated by a motor;
- and
- a solenoid actuator configured to move the pawl,
- the solenoid actuator includes:
- a bobbin having a through hole formed inside the bobbin, wherein a coil is wound around the bobbin;
- a case surrounding an outer surface of the bobbin;
- a drive part movably disposed in the through hole of the bobbin to be drivable;
- a core fixedly disposed above the drive part;
- and
- a return spring disposed between the drive part and the core and configured to apply an elastic force to the drive part in a direction of being away from the core, and
- the bobbin has a damper positioned between the case and the drive part.
Dependencies are inferred from the claim text.