Resonator

A resonator configured to be mounted on an intake system of a vehicle for supplying air to an engine of the vehicle to allow a given frequency in intake noise to be resonated to reduce the intake noise, the resonator comprising:

• an inner pipe having a shape of a cylinder with an inner peripheral surface forming an internal space and an outer peripheral surface and having first openings penetrated into the outer peripheral surface thereof from the inner peripheral surface thereof and second openings spaced apart from the first openings;
• a first cover coupled to the outer peripheral surface of the inner pipe, such that a first resonant space is formed between the outer peripheral surface of the inner pipe and an inner peripheral surface of the first cover, the first resonant space communicating with the internal space of the inner pipe through the first openings and a volume of the first resonant space being set to reduce a first frequency;
• and
• a second cover coupled to the outer peripheral surface of the inner pipe, such that a second resonant space is formed between the outer peripheral surface of the inner pipe and an inner peripheral surface of the second cover, the second resonant space communicating with the internal space of the inner pipe through the second openings, and a volume of the second resonant space being set to reduce a second frequency,
• wherein the first cover and the second cover are connected unitarily with each other along the outer peripheral surface of the inner pipe in a circumferential direction of the inner pipe to have a shape of a loop that is spaced apart from the inner pipe, and the first cover and the second cover are divided by partition walls that are extended in a radial direction from the outer peripheral surface of the inner pipe to the inner peripheral surfaces of the first cover and the second cover, the partition walls being arranged apart from each other in the circumferential direction of the inner pipe.