一种压铆螺栓紧固件
By designing structures such as bosses, annular grooves, and serrations in the press-fit bolt fasteners, the technical problems existing in the prior art have been solved and the technical effects have been achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU MINGYANG WIND POWER TECH CO LTD
- Filing Date
- 2025-07-18
- Publication Date
- 2026-07-17
AI Technical Summary
Existing press-fit bolt fasteners are prone to uneven contact between the fastener and the cavity wall in closed blind cavities, forming microscopic leakage channels and posing risks of media leakage and corrosion.
The design incorporates structures such as bosses, annular grooves, and perforated teeth to increase the strength of the press-fit connection. This allows the fasteners to form an interference fit with the blind cavity wall. The dovetail bevel guides the material stacking to form a wedge-shaped lock. Combined with the interlocking structure of the annular groove and perforated teeth, a stable connection and leak-free seal are achieved.
Maintaining a stable connection under dynamic loads, the uniform material flow enhances connection strength and sealing, improving connection stability and durability, vibration resistance, and tensile strength, preventing loosening and achieving a highly efficient anti-loosening effect. Simultaneously, it improves corrosion resistance, ensuring corrosion resistance and preventing media leakage and corrosion risks.
Smart Images
Figure CN224515617U_ABST
Abstract
Claims
1. A press-in-screw fastener comprising a stud (1), characterized in that: One end of the stud (1) is provided with a boss (2), and a flange (3) is provided on the boss (2). The other end of the stud (1) is provided with a guide post (12). The outside of the stud (1) is provided with an external thread (11). A guide surface (13) is provided between the external thread (11) and the guide post (12). A toothed ring (22) is provided on the outside of the boss (2). An annular groove (31) is provided at the connection between the flange (3) and the boss (2). A perforated tooth (32) is provided at the end of the flange (3) near the boss (2).
2. A press-riveted bolt fastener according to claim 1, wherein: The stud (1), boss (2) and flange (3) are integrally formed. One end of the guide post (12) is chamfered and one end of the flange (3) is rounded.
3. A press-riveted bolt fastener according to claim 1, wherein: The boss (2) is provided with an inclined surface (21). The large end of the boss (2) is connected to the stud (1), and the small end of the boss (2) is connected to the boss (2).
4. A press-riveted bolt fastener according to claim 1, wherein: The number of the flower teeth (32) is multiple, and the multiple flower teeth (32) are distributed in a circle.
5. A press-riveted bolt fastener according to claim 1, wherein: The flower teeth (32) are provided with ribs (33) on both sides, and a hollow area is formed between the ribs (33) and the flower teeth (32), and the hollow area is connected to the annular groove (31).
6. A press-riveted bolt fastener according to claim 1, wherein: A transition surface (34) is provided between the annular groove (31) and the tooth (32) to form a streamlined structure. The connection between the annular groove (31) and the boss (2) is rounded.