Anti-loosening device for left-hand thread nut
A thread screw and anti-loosening technology, which is applied in the direction of nuts, threaded fasteners, screws, etc., can solve the problems of uneven thread force and poor pre-tightening force accuracy, and achieve uniform force, stable performance and wide application Effect
Pending Publication Date: 2022-03-01
张继东
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Problems solved by technology
[0004] In order to overcome the above-mentioned deficiencies in the prior art, the present invention provides an anti-loosening device for anti-threaded nuts, which effectively solves the problems of poor pre-tightening force accuracy and uneven thread stress in the existing threaded anti-loosening structure
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[0017] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments, so that those skilled in the art can implement it with reference to the description. But it should not limit the protection scope of the present invention.
[0018] Such as Figure 1-5 As shown, the present invention provides a reverse thread nut anti-loosening device, comprising an outer nut 1 and a shrink sleeve 2; the inner thread of the outer nut 1 is a conical inner thread; the shrink sleeve 2 includes an outer hexagon 6 of the shrink sleeve, Shrink sleeve shrinkage joint 8, shrink sleeve internal thread 9 and shrink sleeve external thread 7; said shrink sleeve shrink joint 8 is a full-opening through groove; said shrink sleeve internal thread 9 is cylindrical internal thread, and is connected with bolt external thread 5 Matching; the external thread 7 of the shrink sleeve is a conical external thread and matches the internal thread 10 of ...
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The invention discloses an anti-loosening device for a left-hand thread nut. The anti-loosening device comprises an outer nut and a shrinkage sleeve, the internal thread of the external nut is a conical internal thread; the shrinkage sleeve comprises a shrinkage sleeve outer hexagon, a shrinkage sleeve shrinkage joint, a shrinkage sleeve inner thread and a shrinkage sleeve outer thread; the contraction joint of the contraction sleeve is a full-opening through groove; the internal thread of the shrinkage sleeve is a cylindrical internal thread and is matched with the external thread of the bolt; the external thread of the shrinkage sleeve is a conical external thread and is matched with the internal thread of the external nut; the screwing directions of the shrinkage sleeve internal thread and the shrinkage sleeve external thread are opposite; after the anti-loosening device for the left-hand thread nut is fastened, thread gaps can be completely and tightly matched, and the structure is stable in performance under the action of external force such as vibration and impact.
Description
technical field [0001] The invention belongs to the technical field of fasteners, and in particular relates to an anti-loosening device for anti-threaded nuts. Background technique [0002] Threaded connections generally do not loosen under static working conditions, but under the action of external forces such as vibration and impact in actual use, the bolts and nuts will loosen and the pre-tightening force will be reduced, resulting in safety accidents. Ensuring the safety and reliability of bolt and nut connections, and the anti-loosening of nuts are one of the important issues studied by fastener companies. [0003] Now friction lock nut is the most widely used type of lock nut, mainly in the form of double nut, thread coated with adhesive, thread deformation, eccentricity nut and so on. The design idea is reflected in the increase of friction coefficient in structural design. In the case of torque, the error of the pre-tightening force is very large, and the pre-tighte...
Claims
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IPC IPC(8): F16B39/36
CPCF16B39/36
Inventor 张继东
Owner 张继东