A high security anti-loosening fastening structure
A fastening structure and safety technology, applied in the direction of threaded fasteners, locking fasteners, connecting components, etc., can solve the problems of loosening, affecting the safety of products or devices, unreliable anti-loosening effect, etc. Safety, eliminate self-loosening, improve the effect of anti-disassembly effect
Active Publication Date: 2021-12-14
嘉兴奥展实业有限公司
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Problems solved by technology
[0006] One purpose of the present invention is to solve the problem that the existing anti-loosening fasteners have unreliable anti-loosening effects and are still easy to loosen and fail after being subjected to high-frequency vibrations, and provide a highly safe anti-loosening fastening Structure to ensure reliable fastening at all times, completely eliminating the defect of self-loosening due to vibration
[0007] Another object of the present invention is to provide a highly secure anti-loosening fastening structure in order to solve the problem of unsatisfactory anti-disassembly effect existing in existing anti-disassembly fasteners, which further affects the safety of products or devices. It can effectively improve the anti-disassembly effect of fasteners, thereby improving the safety of corresponding devices
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[0045] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0046] Such as figure 1 , figure 2 , image 3 As shown, a highly secure anti-loosening fastening structure is used to connect at least two parts 9, specifically including a fastening screw 1 and a nut 8, the fastening screw includes a screw column 11 with external threads, integrally connected to the The screw head 12 at the end of the screw column, the end of the screw column away from the screw head is a connecting section 15 with external threads. Screw through holes are arranged on the parts to be connected, and the connecting section of the screw column passes through the screw through holes to form threaded connection with the nut.
[0047] For the convenience of description, we refer to the raised helix on the thread as a thread protrusion 113 , and the part between two adjacent thread protrusions in the axial direction is called a t...
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The invention discloses a high-safety anti-loosening fastening structure, which includes fastening screws and nuts. The screw column of the fastening screw is provided with at least one self-locking groove in the spiral extension direction at the thread groove, and the self-locking groove The front end is smoothly connected with the thread groove, and a self-locking step is formed between the rear end of the self-locking groove and the thread groove. A self-locking pin that can move axially is arranged radially on the thread protrusion on the nut, and the inner part of the self-locking pin The end is a self-locking head that matches the cross-section of the threaded protrusion. A compression spring is provided at the outer end of the self-locking pin. The compression spring drives the self-locking pin to move inward to the initial position. The front end of the self-locking head is smoothly connected with the threaded protrusion. A self-locking step is formed between the rear end of the self-locking head and the threaded protrusion, and a wrench is also included. The end surface of the wrench on one side is provided with a positioning hole adapted to the nut, and on the side of the positioning hole corresponding to the position of the self-locking pin. The first magnetic block of the self-locking head. The invention can ensure reliable fastening at any time and completely eliminate the defect of self-loosening due to vibration.
Description
technical field [0001] The invention relates to the technical field of fasteners, in particular to an anti-loosening fastening structure with high safety. Background technique [0002] Fasteners such as screws and bolts are commonly used standard parts in production and daily life. They are mainly used to connect more than two parts. They have the advantages of convenient connection, detachable and repeated installation and fixation. We know that for some equipment and devices in certain industries, such as high-speed rail, fasteners need to have a good anti-loosening effect to avoid safety hazards caused by fasteners loosening after a certain period of time; or , For oil fields and large pipeline valves, etc., the fasteners must also have the effect of anti-disassembly, so as to prevent artificial accidental disassembly or intentional damage. Since the screw is a standard part, it usually has an internal and external hexagonal head, a square head, etc., which are convenien...
Claims
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IPC IPC(8): F16B23/00F16B35/06F16B41/00F16B39/04B25B13/48
CPCF16B23/0069F16B35/06F16B41/005F16B39/04
Inventor 叶照贵谢利峰王世华何永军黄毅韩艳平石丽冯群洁杨喜陶正泽
Owner 嘉兴奥展实业有限公司