Noise suppression member

A noise suppression member comprising:

• a first core part and a second core part;
• and
• a first case part and a second case part;
• the first core part and the second core part being configured to form an annular magnetic core by bringing the first core part and the second core part into contact with each other;
• the first case part being configured to be able to house the first core part, and the second case part being configured to be able to house the second core part;
• the first case part and the second case part including engagement mechanisms;
• the engagement mechanisms each including an engaging portion and an engaged portion and being configured to fix the first case part and the second case part to each other by engaging the engaging portions with the respective engaged portions to bring the engagement mechanisms into an engaging state;
• upon fixing the first case part and the second case part to each other with the engagement mechanisms, the first case part and the second case part are configured to maintain the first core part and the second core part in a state of forming the annular magnetic core, and the annular magnetic core is configured such that an electric wire is able to be placed on an inner peripheral side of the annular magnetic core;
• when bringing the engagement mechanisms into the engaging state, the first core part and the second core part are configured to come into contact with each other before the engagement mechanisms are brought into the engaging state, and the engagement mechanisms are configured to be brought into the engaging state after the first core part and the second core part come into contact with each other;
• the noise suppression member being configured to be fixed to a fixing target place with a fixing tool;
• at least one of the first case part and the second case part including a fixing portion;
• the fixing portion including a through-hole;
• the fixing tool including a shaft portion;
• the shaft portion being configured to be inserted into the through-hole;
• the at least one case part including a first region, a second region, and a third region in a circumferential direction about an axis being an inserting direction of the electric wire;
• the engagement mechanisms being disposed in the first region;
• the fixing portion being disposed in the second region;
• the third region being in between the first region and the second region;
• holes being defined in the third region;
• and
• the at least one case part being configured such that the third region is less rigid than the first region and the second region because of the holes defined in the third region, and upon external force acting on the fixing portion and upon a load acting on the at least one case part, the at least one case part being configured to reduce distortion in a vicinity of the engagement mechanisms by deforming in the third region.