Rivet provided with elastic feet
AssigneeITW de France
InventorJean-Pierre Lesecq
Life of this patent
Estimating the term…
Abstract
A rivet (1) includes a bearing head (2), a pulling stem (3) and an insertion body (4). The insertion body (4) includes at least two longitudinal flat surfaces (13) interrupting a notched portion (14); and at least two elastic feet (15) each having a first end elastically joined to the insertion body (4) and a second end which is free. Each of these elastic feet (15) is adapted to adopt a folded position in which it is folded along the insertion body (4), on one of the flat surfaces (13), and a tightened position in which it is arranged transversely of the general orientation of the insertion body (4). The bearing head (2) has at least one slot (9) enabling the head to deform radially.
Claims20
A rivet, comprising:
- a nut having a through opening;
- a stem passable through the opening of said nut which is slidable along said stem, said stem having upper and lower ends and a notched portion located between said upper and lower ends;
- a head at the upper end of said stem;
- said nut further comprising, on an inner face of the opening, at least one tooth engageable with said notched portion;
- and
- a locking element elastically moveable between a folded position and a locked position, wherein said locking element has a greater radial extent in the locked position than in the folded position;
- wherein said locking element comprises:
- a first section being elastically deformable and having a proximal end joined to said stem at a first location, and a distal end, wherein said locking element further has, between the folded and locked positions, a relaxed position in which said first section extends obliquely upwardly towards said head;
- and
- a second section having a proximal end and a distal end and a middle portion therebetween, said second section being joined to the distal end of said first section at said middle portion, wherein, in the relaxed position, said second section extends obliquely downwardly away from said head;
- and
- said stem further comprises, at a second location closer to said head than said first location, a flange facing, in an axial direction of said stem, towards said head, said flange defining a blocking surface on which a lower surface of the proximal end of said second section rests in the locked position.
A rivet, comprising:
- a nut having a through opening;
- a stem passable through the opening of said nut which is slidable along said stem without being rotatable about said stem, said stem having opposite upper and lower ends and a notched portion between said upper and lower ends;
- a head at the upper end of said stem;
- said nut further comprising, on an inner face of the opening, at least one tooth engageable with said notched portion;
- and
- a locking element joined to said stem adjacent said head, said locking element being elastically moveable between a folded position and an expanded position, wherein said locking element has a greater radial extent in the expanded position than in the folded position;
- wherein said opening extends circumferentially for a full 360 degrees in at least a portion of said nut, and said locking element further has a locked position in which said locking element has a greater radial extend than in the expanded position;
- said locking element being elastically joined to said stem at a first location adjacent said head;
- said stem further comprising, at a second location closer to said head than said first location, a reduced cross section portion defining a flange facing, in an axial direction of said stem, towards said head, said flange defining a blocking surface on which a lower surface of said locking element rests in the locked position.
Dependencies are inferred from the claim text.