Solenoid actuator

A solenoid actuator comprising:

• a hollow case formed with open top and bottom surfaces;
• a hollow housing integrated with a connector for power and signal transmission and mounted inside the case;
• a bobbin assembly mounted inside the housing and connected to the connector;
• a core penetrating the bobbin assembly, coupled to cover a top of the case and the housing, and having an operating space formed inside;
• a cover covering a bottom of the case, the housing, and the core;
• a plunger movably installed in the operating space;
• a rod coupled to penetrate through the core and movable by the plunger;
• a deformation preventer provided between the bobbin assembly and the core, preventing deformation and movement of components stored inside the case, and
• a spacer coupled to an upper surface of the case,
• wherein the spacer is formed in a ring shape surrounding the core and comprises protrusions formed on an inner surface thereof to contact the core, and
• wherein the protrusions are arranged radially along the inner surface of the spacer, each having a groove formed on a top thereof to accommodate deformation caused by contact with the core.