CN107781273A - A split self-locking nut - Google Patents

Abstract

The invention relates to the technical field of mechanical assembly, in particular to a split self-locking nut, comprising a first connecting block and a second connecting block located above the first connecting block, and a half Circular first internal thread, the center of the lower end of the second connecting block is provided with a semicircular second internal thread matching the first internal thread; the middle part of the upper end of the first connecting block is provided with a groove groove, both ends of the groove are provided with first through holes, the middle part of the lower end side of the second connection block is provided with a plugboard that matches the groove, and the center of the plugboard is provided with a The other side of the upper end of the first connection block is provided with a threaded hole, and the other side of the lower end of the second connection block is provided with a threaded hole that matches the threaded hole. Step through hole. The invention is convenient to use, has good self-locking performance, wide practical range and reduces potential safety hazards.

Description

A split self-locking nut

technical field

The invention relates to the technical field of mechanical assembly, in particular to a split self-locking nut.

Background technique

Nuts are widely used assembly fasteners, but when ordinary nuts are used, especially in high-frequency, alternating and other vibration situations, the nuts will loosen or even fall off due to vibration. In order to prevent the nut from loosening and falling off and reduce potential safety hazards, a variety of nuts with self-locking functions have been derived. In the prior art, in order to improve the reliability of the self-locking nut, sometimes a flange is provided at one end of the nut to prevent the nut from loosening by increasing the frictional force; through holes, and insert cotter pins into the through holes. The reliability of the nut is improved to a certain extent by the way of setting the flange, but with the increase of the vibration frequency and the extension of the service time, it will still loosen and fall off; the method of cotter pins is used, and its production cost is relatively high , and can only use matching nuts and bolts, the practical range is small, and it is inconvenient to use.

Contents of the invention

The object of the present invention is to solve the problems existing in the above-mentioned background technology, and to provide a split self-locking nut, which locks two connecting blocks with semicircular threads by setting screws to achieve the purpose of self-locking. It is convenient, has high self-locking performance, and has a wide range of applications, reducing potential safety hazards.

The technical solution adopted by the present invention to solve the technical problem is: a split self-locking nut, including a first connecting block and a second connecting block located above the first connecting block, the center of the upper end of the first connecting block A semicircular first internal thread is provided, and the center of the lower end of the second connecting block is provided with a semicircular second internal thread matching the first internal thread; the middle part of the upper end of the first connecting block A groove is provided, and first through holes are provided on both ends of the groove, and a plugboard matching the groove is arranged in the middle of the lower end of the second connection block, and the center of the plugboard is arranged There is a second through hole matched with the first through hole; the other side of the upper end of the first connection block is provided with a threaded hole, and the other side of the lower end of the second connection block is provided with the threaded hole Compatible stepped through holes.

Further, a pin shaft is provided through the first through hole and the second through hole, and the first connecting block is hingedly connected to the second connecting block through the pin shaft.

Further, a screw is provided in the stepped through hole, and the screw passes through the threaded hole, and the screw connects the first connection block and the second connection block together.

Further, the first internal thread and the second internal thread form an integral connecting thread.

Furthermore, a notch is provided in the middle of the connecting thread, and when in use, by further tightening the screw, the notch is squeezed to achieve the purpose of nut self-locking.

Further, the split self-locking nut is a hexagonal nut.

Further, the inserting board is circular.

The beneficial effect of the present invention is that two pieces of connecting blocks with semicircular threads are spliced together by arranging screws to form an integral connecting thread, and a gap is provided in the middle of the connecting thread. When squeezed tightly, the notch is deformed, and the self-locking nut is subjected to dual radial and axial pressures, and the friction force is greatly improved to achieve the purpose of self-locking. The utility model has the advantages of convenient use, good self-locking performance, wide application range, and reduces potential safety hazards.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a schematic structural diagram of the first connection block in Fig. 1;

Fig. 3 is the right side view of the first connection block in Fig. 2;

FIG. 4 is a schematic structural diagram of the second connection block in FIG. 1 .

In the figure: 1. The first connection block, 2. The second connection block, 3. The first internal thread, 4. The second internal thread, 5. Groove, 6. Insert plate, 7. Pin shaft, 8. Threaded hole , 9. Step through hole, 10. Screw, 11. Connecting thread, 12. Notch, 13. First through hole, 14. Second through hole.

Detailed ways

The present invention is described in further detail now in conjunction with accompanying drawing. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the configurations related to the present invention.

A split self-locking nut shown in Figures 1 to 4, comprising a first connecting block 1 and a second connecting block 2 located above the first connecting block 1, the center of the upper end of the first connecting block 1 is set There is a semicircular first internal thread 3, and the center of the lower end of the second connecting block 2 is provided with a semicircular second internal thread 4 matching the first internal thread 3; the upper end of the first connecting block 1 The middle part of one side is provided with a groove 5, and the two ends of the groove 5 are provided with a first through hole 13, and the middle part of the lower end side of the second connecting block 2 is provided with a A board 6, the center of the board 6 is provided with a second through hole 14 matched with the first through hole 13; the other side of the upper end of the first connecting block 1 is provided with a threaded hole 8, the first The other side of the lower end of the two connecting blocks 2 is provided with a stepped through hole 9 matched with the threaded hole 8 .

A pin shaft 7 is provided through the first through hole 13 and the second through hole 14, and one end of the first connecting block 1 is hinged to one end of the second connecting block 2 through the pin shaft 7. .

A screw 10 is arranged in the step through hole 9, and the screw 10 passes through the threaded hole 8, and the screw 10 connects the first connecting block 1 and the second connecting block 2 together, at this time The first internal thread 3 and the second internal thread 4 form an integral connecting thread 11 .

There is a notch 12 in the middle of the connecting thread 11. In use, by further tightening the screw 10, the notch 12 is squeezed, and the split self-locking nut is subjected to radial and axial double pressure. The frictional force between the split self-locking nut and the bolt is increased to achieve the purpose of self-locking, and the split self-locking nut is a hexagonal nut, which is easy to use and has a wide range of applications.

As shown in Fig. 1, Fig. 2 and Fig. 4, before use, the inserting plate 6 is inserted into the groove 5, and the pin shaft 7 is inserted into the first through hole 13 and the second through hole. In the hole 14, at this time, one end of the first connecting block 1 is hinged to one end of the second connecting block 2; then the screw 10 is inserted into the step through hole 9, and the screw 10 is screwed into the In the threaded hole 8, at this time, the first connecting block 1 and the second connecting block 2 are connected together, the semicircular first internal thread 3 and the semicircular second internal thread 4 Spliced into an integral connecting thread 11, a nut similar to a common hex nut is formed.

After the split self-locking nut is screwed into the connecting bolt that needs to be tightened, by further tightening the screw 10 and squeezing the notch 12, the split self-locking nut is subjected to radial and axial double pressure , the frictional force between the split self-locking nut and the connecting bolt increases, avoiding loosening and falling off, and realizing the purpose of self-locking.

The invention has the advantages of convenient loading, unloading and use, good self-locking performance, wide practical range and reduced safety hazards.

Inspired by the above-mentioned ideal embodiment according to the present invention, through the above-mentioned description content, relevant workers can make various changes and modifications within the scope of not departing from the technical idea of the present invention. The technical scope of the present invention is not limited to the content in the specification, but must be determined according to the scope of the claims.

Claims (7)

1. A split self-locking nut, characterized in that it comprises a first connecting block and a second connecting block positioned above the first connecting block, the center of the upper end of the first connecting block is provided with a semicircular first internal thread, the center of the lower end of the second connecting block is provided with a semicircular second internal thread matching the first internal thread; the middle part of the upper end side of the first connecting block is provided with a groove, the Both ends of the groove are provided with first through holes, and the middle part of the lower end side of the second connecting block is provided with a plug-in board that matches the groove, and a plug-in board that is connected to the first through-hole is provided in the center of the plug-in board. The other side of the upper end of the first connecting block is provided with a threaded hole, and the other side of the lower end of the second connecting block is provided with a stepped through hole matching the threaded hole. 2. A split self-locking nut according to claim 1, characterized in that, a pin shaft is provided through the first through hole and the second through hole, and the first connecting block passes through the The pin shaft is hinged to the second connecting block. 3 . The split self-locking nut according to claim 1 , wherein a screw is arranged in the stepped through hole, and the screw passes through the threaded hole. 4 . 4. The split self-locking nut according to claim 1, wherein the first internal thread and the second internal thread form an integral connecting thread. 5. The split self-locking nut according to claim 4, wherein a notch is provided in the middle of the connecting thread. 6. A split self-locking nut according to claim 1, wherein the split self-locking nut is a hexagonal nut. 7. The split self-locking nut according to claim 1, wherein the inserting plate is circular.