一种防扭密封拉铆结构及拉铆螺母
By setting grooves filled with sealant and torque ribs on the flange end face of the rivet nut, the problem of insufficient sealing performance of the rivet nut is solved, a stable sealing structure and anti-torsion performance are achieved, the reliability of the connection is improved and the manufacturing process is simplified.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- PENNENGINEERING AUTOMOTIVE FASTENERS (KUNSHAN) CO LTD
- Filing Date
- 2025-06-30
- Publication Date
- 2026-07-17
AI Technical Summary
Existing rivet nuts are prone to creating leakage channels after connection, resulting in insufficient sealing performance. Furthermore, the sealant is at risk of breaking after compression, failing to meet the requirements for liquid or gas sealing.
A groove is provided on the flange end face of the rivet nut facing the main body, and the groove is filled with sealant. Torque ribs and anti-rotation parts are provided on the flange end face. The torque ribs are embedded in the plate surface to increase friction, and the anti-rotation parts contact the inner wall of the plate to restrict rotation, forming a stable sealing structure.
It improves the sealing performance and torsional resistance of the riveted structure, avoids sealant leakage, enhances the stability and reliability of the connection, simplifies the structural design and reduces manufacturing costs.
Smart Images
Figure CN224515627U_ABST
Abstract
Claims
1. A twist-proof sealed rivet structure, characterized by, The application relates to a pull-rivet nut, which comprises a main body, a flange connected to one end of the main body, a groove for accommodating sealing glue around the main body and provided on the end face of the flange, a plate arranged on the outer wall of the main body, the inner wall of the plate being in contact with the outer wall of the main body, at least part of the main body being bulged to form a bulge part, the bulge part and the flange being used to clamp the plate, the sealing glue in the groove being in contact with the plate to form a sealing structure, the flange further comprising a plurality of torque ribs provided on the end face of the flange, the torque ribs extending radially from the outer edge of the flange to the outer edge of the groove, and the cross-sectional area of the torque ribs gradually decreasing from the outer edge of the flange to the outer edge of the groove. The outer edge of the through hole in the plate is not larger than the end of the torque rib close to the groove. The torque ribs are distributed on the end face of the flange. The outer wall of the main body in contact with the inner wall of the plate further comprises an anti-rotation part. The pull-rivet nut further comprises a blind hole, and the inner wall of the blind hole is provided with internal threads.
2. The anti-twist seal pull-rivet structure according to claim 1, wherein The application relates to a pull-rivet nut, which comprises a main body, a flange connected to one end of the main body, a groove for accommodating sealing glue around the main body and provided on the end face of the flange, a plate arranged on the outer wall of the main body, the inner wall of the plate being in contact with the outer wall of the main body, at least part of the main body being bulged to form a bulge part, the bulge part and the flange being used to clamp the plate, the sealing glue in the groove being in contact with the plate to form a sealing structure, the flange further comprising a plurality of torque ribs provided on the end face of the flange, the torque ribs extending radially from the outer edge of the flange to the outer edge of the groove, and the cross-sectional area of the torque ribs gradually decreasing from the outer edge of the flange to the outer edge of the groove.
3. The anti-twist sealed rivet structure according to claim 1, wherein The outer wall of the main body in contact with the inner wall of the plate further comprises an anti-rotation part.
4. The tamperproof seal rivet structure of claim 1, wherein The pull-rivet nut further comprises a blind hole, and the inner wall of the blind hole is provided with internal threads.
5. The tamperproof seal rivet structure of claim 1, wherein 6. A pull-rivet nut characterized by, 7. The riv-nut according to claim 6, characterized in that 8. The riv-nut according to claim 6, characterized in that