A temporary fastening mechanism for one-sided quick installation
CN118990369BActive Publication Date: 2026-10-27SHAOGUAN COLLEGE
Patent Information
- Application Number
- CN202411155254.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-21
- Publication Date
- 2026-10-27
- Estimated Expiration
- 2044-08-21
AI Technical Summary
Technical Problem
[0003]专利CN115674097A公开了一种基于刚性胀套的临时紧固件，包括：驱动机构、紧固机构、夹持机构和传动机构，所述紧固机构包括旋转连接轴、外磁体、紧固外壳、内磁体、紧固中心轴、刚性胀套和膨胀收缩环；所述驱动机构可使所述外磁体转动，进而使所述内磁体转动，所述紧固中心轴与所述内磁体螺纹连接，从而使所述内磁体转动时所述紧固中心轴沿其轴向方向滑动，刚性胀套以及膨胀收缩环被撑开或闭合，从而对多个需要被紧固的薄壁件进行预连接固定，但是上述方案中，由于预连接孔尺寸较小，用于驱动刚性胀套以及膨胀收缩环撑开的紧固中心轴的紧固锥度段位于刚性胀套伸出端，且膨胀收缩环撑开闭合的设计空间局限大，使得驱动刚性胀套、紧固中心轴以及膨胀收缩环的材料选择严苛，加工和装配难度较高且疲劳寿命严重受限
Benefits of technology
[0012]本申请中驱动单元以及导向单元均设置在壳体内腔，使结构更加集中紧密，且设计空间更大，受预连接孔尺寸限制的结构仅为紧固单元，便于加工和装配；本申请转动螺栓，使得螺栓带动驱动柱以及连接柱沿轴向后退，并带动挡块后退，挡块带动胀套沿轴向后退，上述过程中胀套内侧的第一前锥度槽以及第一后锥度槽与导向座上的第一前锥度段与第一后锥度段相配合，使得胀套沿轴向后退的同时沿径向分离，且该过程中，第二前锥度槽与第二前锥度段相配合，第二后锥度槽与第二后锥度段相配合，用于保证胀套后移运动以及扩张运动的稳定性，上述运动带动前部紧固块的后移以及扩张，从而实现对多个薄壁件的预固定。
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Figure CN118990369B_ABST
Abstract
The application discloses a kind of temporary fastening mechanisms for unilateral quick installation, it is related to temporary fastening technical field, including shell, fastening unit and drive unit, the front end of the fastening unit is used to pre-fix multiple thin-walled parts, rear end is passed through the front end wall of the shell and extends into the inner cavity of the shell, the rear end of the inner cavity of the shell is equipped with guide unit, the front end of the drive unit is connected with the extension end of the fastening unit, rear end is passed through the rear end wall of the shell and extends outward, the drive unit is used to drive the fastening unit moves along the guide unit, while driving the opening or closure of the front end of the fastening unit, for reliably clamping multiple thin-walled parts of different thicknesses.The drive unit and guide unit in the application are all arranged in the inner cavity of the shell, so that the structure is more concentrated and compact, and the design space is larger, the structure limited by the size of the pre-connected hole of the thin-walled part is only the fastening unit, which is convenient for processing and assembly.
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Citation Information
Patent Citations
Temporary fastener
CN105934592A
Self locking floating fastener
US20100172713A1