一种防松脱的金属螺丝紧固结构
By combining the Torx screw with threaded holes, push blocks, connecting posts, and fixing blocks, along with the design of an internal hexagonal turntable with limit blocks, locking blocks, locking slots, and a second spring, the screw is designed to prevent loosening and facilitate easy disassembly. This solves the problems of easy loosening of existing metal screws and inability to disassemble expansion bolts, and improves the stability and ease of maintenance of the screw fastening structure.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU ASIER INTELLIGENT TECH CO LTD
- Filing Date
- 2025-08-05
- Publication Date
- 2026-07-17
AI Technical Summary
Existing metal screw fastening structures have limited anti-slip effect when using washers and are prone to loosening, while expansion bolts cannot be disassembled after fixing, increasing maintenance complexity and cost.
The screw is locked and unlocked by using a combination of Torx screws, threaded holes, push blocks, connecting columns, and fixing blocks, along with an internal hexagonal turntable, limit blocks, locking blocks, locking slots, and a second spring. The combination of the limit blocks and the pull rope enhances the anti-loosening performance and improves the ease of disassembly.
It improves the anti-loosening performance and ease of use of screws, ensuring that screws are not easily loosened in vibration environments and can be reused, solving the problems of easy loosening of traditional screws and inability to disassemble expansion bolts.
Smart Images
Figure CN224515630U_ABST
Abstract
Claims
1. A loosening-preventive metal screw fastening structure comprising a screw shaft (1), characterized by: The screw rod (1) is fixedly connected to the top of the screw head (2), the top surface of the screw head (2) is provided with a hexagonal groove, the hexagonal groove is provided with a limiting block (4), the top surface of the limiting block (4) is provided with an internal hexagonal turntable (10), the bottom surface of the hexagonal groove is provided with a threaded hole (6); the inner walls of the six sides of the hexagonal groove are provided with slots (9) at intervals, the outer walls of the limiting block (4) are provided with corresponding slots (11), and the limiting block (4) is provided with a shrinkage groove at the slot (11).
2. The anti-loosening metal screw fastening structure according to claim 1, characterized in that: A Torx screw (5) is threaded into the threaded hole (6). The bottom section of the Torx screw (5) is tapered. Multiple push blocks (7) are evenly distributed along the axial side at equal intervals on the inner wall of the threaded hole (6) at the bottom end. A limit spring groove is opened on the inner wall of the threaded hole (6) at the push block (7). A limit plate is fixedly connected to one end of the push block (7) in the limit spring groove. A connecting post is fixedly connected to one end of the limit plate. A first spring (8) is sleeved on the connecting post.
3. The anti-loosening metal screw fastening structure according to claim 2, characterized in that: The outer wall of the screw rod (1) is provided with a storage groove at the limit spring groove. A fixing block (3) is attached to the storage groove. The horizontal plane of the fixing block (3) is arc-shaped. One end of the connecting column is fixedly connected to the fixing block (3).
4. The anti-loosening metal screw fastening structure according to claim 3, characterized in that: A second spring (14) is installed inside the shrinkage groove. One end of the second spring (14) is fixedly connected to the locking block (11), and the other end of the second spring (14) is fixedly connected to the inner wall of the shrinkage groove.
5. The anti-loosening metal screw fastening structure according to claim 4, characterized in that: The second spring (14) is fitted with a pull rope (13) that is fixed to one end of the locking block (11). One end of the pull rope (13) passes through the shrinkage groove and is fixed to the outer wall of the internal hexagonal turntable (10). The limiting block (4) has a guide groove (12) at the connection between the pull rope (13) and the internal hexagonal turntable (10).
6. The anti-loosening metal screw fastening structure according to claim 5, characterized in that: The fixing block (3) has anti-slip texture on one of its outward-facing ends.