Rivet for the fastening of pieces to the bodywork of a vehicle

• US 20050002759A1
• Filed: 04/26/2004
• Published: 01/06/2005
• Est. Priority Date: 04/29/2003
• Status: Abandoned Application

• Current Assignee: ITW Espana S.A. (Illinois Tool Works Inc.)
• Original Assignee: ITW Espana S.A. (Illinois Tool Works Inc.)
• Inventors: Pares Isanta, Albert
• Application Number:
  US10/831,364
• Publication Number:
  US 20050002759A1
• Time in Patent Office: Days
• US Class Current: 411/45
• CPC Class Codes: F16B 21/02 Releasable fastening devices locking by rotation with snap-action F16B21/06; studs or coupling pins with resilient protrusions F16B21/08

Abstract

The rivet comprises a body (1) with laterally expandable pins (4) and a stem (2) which slides inside the body (1) producing the expansion of the pins (4), to procure an anchoring of the assembly in a housing. The head (6) of the stem (2) and the head (3) of the body (1) have inclined planes (8) and ramps (9), respectively, which in the position of maximum penetration of the stem (2) are coincident and determine an external continuity of the head of the rivet, whilst a rotation of 90° of the stem (2) signifies a sliding of the inclined surfaces and a separation of the head (6) of the stem (2) with respect to the head (3) of the body (1), allowing the drawing of the stem (2) through its head (6) and the dismantling of the body (1) by pulling, as a consequence of the stem (2) having a protuberance (10) which prevents that the same can become independent of the body (1) whereby the pulling of the former results in the extraction and dismantling of the whole assembly of the rivet with respect to the housing in which it is located.

Claims

1. Rivet for the fastening of pieces to the bodywork of a vehicle, which comprising two elements, one of them formed by a body with pins laterally expandable by means of the thrust of the second element, the latter formed by a stem passing axially through said body, is characterised in that the two elements of body (1) and stem (2) form a single-component assembly, in which the stem (2) is capable of moving axially with respect to the body (1) but without becoming independent;

there being foreseen complementary means (8) and (9) established in the stem (2) and in the body (1) for the separation of the head (6) of the former with respect to the head (3) of the body (1), by means of rotating the first through 90°

, also having means (10) which impede both elements from becoming independent.

2. Rivet for the fastening of pieces to the bodywork of a vehicle, according to claim 1, characterised in that the means which carry out the separation of the head (6) of the stem (2) with respect to the head (3) of the body (1), are constituted by some inclined planes (8) established in the lower part of the head (6) of the stem (2) and some ramps (9) established in the upper part of the head (3) of the body (1), said inclined planes (8) and ramps (9) being coincident in the operative position and of maximum penetration of the stem (2) on the body (1), determining uniformity between both on the external surface.

3. Rivet for the fastening of pieces to the bodywork of a vehicle, according to claim 1, characterised in that the means which impede the stem (2) becoming independent with respect to the body (1), are constituted by some protuberances (10) foreseen in opposition and in correspondence with the internal end of the actual stem (2), which protuberance slide in grooves (5) defined between the expandable pins (4) of the body (1), the protuberances of which constitute the maximum extraction limit of the stem (2) in the position of displacement of the latter toward the exterior.

4. Rivet for the fastening of pieces to the bodywork of a vehicle, according to claim 3, characterised in that protuberances (10) of the stem (2) slide and are guided, in the displacement toward the interior of the body (1), along axial grooves (11) established in the internal face of the expandable pins (4) of the actual body (1).