Interconnecting construction between mounting plate and bolt
AssigneeJidosha Kiki Co., Ltd.
InventorHitoshi Takaku
Life of this patent
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Abstract
In interconnecting construction between a bolt and a mounting plate such as a shell of a brake booster is disclosed. A sealing, annular projection is formed in an end face of a bolt head so as to surround a bolt shank which is formed with a serration. Both the annular projection and the serration are caused to bite into the opposite surfaces of the mounting plate, whereby an excellent sealing effect and locking action against rotation are simultaneously achieved.
Claims7
An interconnecting construction between a mounting plate and a bolt in which a bolt shank is formed with a serration having several cusps at its one end, which serration is passed through an opening formed in a mounting plate, and an end face of a bolt head is disposed in abutment against one side of the mounting plate while the serration is subjected to a plastic deformation from the other side of the mounting plate, the mounting plate is held sandwiched between a portion of the bolt shank which passes through the opening and is subjected to the plastic deformation and the end face of the bolt head so as to secure the bolt to the mounting plate, with the serration biting into the mounting plate;
- characterized by a sealing, annular projection formed in the end face of the bolt head so as to surround the bolt shank, the annular projection and the serration being caused to bite into the mounting plate, and an annular recess formed in the end face of the bolt head, said annular projection being located in said annular recess.
Dependencies are inferred from the claim text.