CN-224214547-U - High-compatibility thread fastening device

Abstract

The invention discloses a high-compatibility thread fastening device which comprises a thread plug body and a thread ring body, wherein the thread plug body is provided with external threads, the thread ring body is provided with internal threads, the internal threads are connected with the external threads in a matched mode, protruding blocks are arranged on the sides of the external threads and/or the internal threads, and the protruding blocks of the internal threads/the external threads are in interference fit with the sides of the external threads/the internal threads. According to the invention, the characteristic pitch diameter of the screw thread has self-adaptability through plastic deformation after the interference fit of the convex blocks, the discrete degree of the tightening torque is reduced, and the screw thread tightening has a certain tightening torque through elastic deformation after the interference fit of the convex blocks. The invention realizes the general matching of the screw thread, improves the screw thread tightening quality, reduces the production and management cost and improves the market space.

Inventors

• PENG WEILING

Assignees

• 彭炜凌

Dates

Publication Date

20260508

Application Date

20250619

Claims (2)

1. 1. The utility model provides a high compatibility screw thread fastener, includes screw thread cock body, screw thread ring body, its characterized in that: The threaded plug body is provided with external threads; The threaded ring body is provided with an internal thread, and the internal thread is connected with the external thread in a matching way; And the tooth sides of the external threads and/or the internal threads are provided with lugs.
2. 2. The high compatibility threaded fastener as set forth in claim 1 wherein said tab of said internal thread/said external thread is an interference fit with the flanks of said external thread/said internal thread.

Description

High-compatibility thread fastening device Technical Field The invention belongs to the technical field of screw tightening, and particularly relates to a screw tightening device. Background The threaded connection is a detachable fixed connection widely applied to various mechanical equipment and can play roles of fixing, transmission, positioning, sealing and the like. The quality of the threaded connection plays a key role in the reliability of the product, and an important index is screw tightening, including tightening techniques and anti-loosening techniques. In the field of optical imaging, threaded connections are often used for fixation and fixation of optical lenses. In order to ensure the imaging quality of the product, the installation height, the perpendicularity and the concentricity of the optical lens reach the standards through high-quality threaded connection. The optical lens generally adopts relatively precise ultra-fine threads, and the main factor determining the screw tightening effect is screw matching tolerance, and then screw material performance and screw tightening process. The consistency of thread sizes among threads of the same specification is difficult to control due to the differences of processing parameter setting and material performance, equipment aging, cutter abrasion, die corrosion and other factors, so that tightening torque generated by each group of parts in thread tightening is not necessarily uniform and stable. Particularly, for small optical lenses, the assembly is easy to cause the problem of difficult installation or loosening. Existing conventional solutions are to re-mate parts or to customize the fit tolerances of parts to the manufacturer. The two schemes further cause confusion of market screw tolerance standards, and aggravate the problems of complex purchasing, stock accumulation and frequent inspection disputes of related products. Disclosure of Invention Aiming at the problem of low assembly compatibility of the screw thread fastening device, the invention provides the screw thread fastening device with high compatibility. The high-compatibility threaded fastening device comprises a threaded plug body, a threaded ring body and a threaded connecting piece, wherein the threaded plug body is provided with external threads, the threaded ring body is provided with internal threads, the internal threads are connected with the external threads in a matched mode, and protruding blocks are arranged on tooth sides of the external threads and/or the internal threads. In the high-compatibility thread fastening device, the internal thread/the protruding block of the external thread is in interference fit with the external thread/the flank of the internal thread. The invention has the beneficial effects of enabling the characteristic pitch diameter of the thread to have self-adaption, realizing the general fit of the thread, enabling the thread sides to be in interference fit, improving the screw tightening quality, reducing the discrete degree of the tightening torque and facilitating the production and management. Drawings FIG. 1 is a block diagram of the apparatus of the present invention; FIG. 2 is an enlarged view of a portion A of FIG. 1; FIG. 3 is a schematic diagram of embodiment 1 of the present invention; FIG. 4 is a sectional view of an exploded view of embodiment 1 of the present invention; FIG. 5 is an enlarged view of a portion B of FIG. 4; fig. 6 is a partial enlarged view of a portion C in fig. 4. FIG. 7 is a schematic diagram of embodiment 2 of the present invention; The figure marks show that the plug body is 10-threaded, the plug body is 11-externally threaded, the plug body is 20-threaded, the plug body is 21-internally threaded and the plug body is 30-protruding. Detailed Description The technical solutions of the present invention will be clearly described below with reference to the drawings and examples, and it is apparent that the described examples are only some of the examples of the present invention, but not all of the examples. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. It should be understood that the term "and/or" as used herein is merely an association relationship describing the associated object, and means that three relationships may exist, for example, A1 and/or B1, and that three cases of A1 alone, A1 and B1 together, and B1 alone may exist. In addition, the occurrence of a character "/" twice within a sentence