一种汽车用防松螺钉
By designing the ring-shaped marking ring and rectangular spring structure of the anti-loosening screw, the problem of existing automotive anti-loosening screws being difficult to identify visually under vibration and requiring professional tools for inspection is solved, thus achieving rapid fault diagnosis and stable connection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HAIYAN HAOXIN ELECTRONIC TECHNOLOGY CO LTD
- Filing Date
- 2025-06-18
- Publication Date
- 2026-07-17
AI Technical Summary
Existing automotive anti-loosening screws are prone to loosening under vibration and impact, which is difficult to detect with the naked eye and requires professional tools for inspection, affecting driving safety and component lifespan.
Design an anti-loosening screw comprising a screw body, a rectangular spring, and a washer. Utilizing the mating structure of the annular marking ring and the rectangular spring, loosening is determined by visually observing whether the annular marking ring is dislodged, and radial friction is provided by the compressed state of the rectangular spring to prevent loosening.
It enables quick identification of loose screws without the need for specialized tools, improving inspection efficiency and effectively preventing screws from loosening due to vibration and impact, thus enhancing connection reliability and safety.
Smart Images
Figure CN224515631U_ABST
Abstract
Claims
1. A self-locking screw for a vehicle, comprising a self-locking screw combined by a screw body (100), a rectangular spring (200) and a washer (300), characterized in that: The screw body (100) is provided with a circular flange (120), and a screw head (110) is provided at the center of the top of the circular flange (120). A screw shank (130) is provided at the center of the bottom of the circular flange (120). The bottom end of the screw shank (130) passes through a through hole at the center of the bottom end of the washer (300). A rectangular spring (200) is provided between the washer (300) and the circular flange (120). An annular marking ring (121) is provided above the circumferential outer wall of the circular flange (120).
2. The self-locking screw for an automobile according to claim 1, characterized in that: The inner side of the top of the washer (300) is provided with a first annular protrusion (310) and a second annular protrusion (320), and the second annular protrusion (320) is located inside the first annular protrusion (310).
3. The self-locking screw for an automobile according to claim 2, wherein: A second groove (330) is provided between the circumferential inner wall of the first annular protrusion (310) and the circumferential outer wall of the second annular protrusion (320), and a first groove (122) is provided at the bottom end of the circular flange (120).
4. The self-locking screw according to claim 3, wherein: The two ends of the rectangular spring (200) are located in the first groove (122) and the second groove (330), respectively.
5. The self-locking screw according to claim 3, wherein: The vertical distance between the outer circumferential wall of the first annular protrusion (310) and the inner circumferential wall of the second annular protrusion (320) is equal to the groove width of the first groove (122).
6. The self-locking screw according to claim 1, wherein: The inner diameter of the washer (300) is equal to the outer diameter of the circular flange (120).