Fastening structure

A fastening structure for fixing an object to a to-be-fixed member by inserting a threaded rod of a bolt for fixing the object through a fixing hole of the to-be-fixed member in a manner such that an end portion of the threaded rod protrudes from the fixing hole, and applying a nut to the end portion via a washer, wherein

• the washer has an inclined surface formed on a first side thereof which faces the nut, and has a flat surface formed on a second side thereof which is opposite to the first side;
• the inclined surface is formed so as to have a gradually decreasing height in a tightening direction of the nut;
• a machine screw is screwed into the nut in a direction such that an axis thereof is orthogonal to the inclined surface, and an end of the machine screw presses the inclined surface via an intermediate cradle;
• and
• the intermediate cradle has a flat surface formed on one side thereof which comes in contact with the machine screw, and has an inclined surface formed on a side opposite to the side where the machine screw contacts, having a smaller coefficient of friction than the second side of the washer, and having a shape corresponding to the inclined surface of the washer.

A fastening structure for fixing an object to a to-be-fixed member by inserting a threaded rod of a bolt for fixing the object through a fixing hole of the to-be-fixed member via a washer in a manner such that an end portion of the threaded rod protrudes from the fixing hole, wherein

• the washer has an inclined surface formed on a first side thereof which faces the nut, and has a flat surface formed on a second side thereof which is opposite to the first side;
• the inclined surface is formed so as to have a gradually decreasing height in a tightening direction of the bolt;
• a machine screw is screwed into a head of the bolt in a direction such that an axis thereof is orthogonal to the inclined surface, and the machine screw has an end which comes in contact with the inclined surface;
• and
• the inclined surface has a smaller coefficient of friction than the second side of the washer.