Anti-loose nut

Abstract

The utility model relates to nut technical field, name is a kind of anti-loose nut, including nut body, the nut body has nut hole, there is thread in nut hole, this thread is nut thread, the nut hole is the nut hole that screw in, the bolt has thread, this thread is bolt thread, the thread has interval arrangement's thread protrusion and thread groove, bolt is screwed in nut hole when using, there is through hole in the side of nut body, this through hole is side through hole, the side through hole inner end reaches nut hole, there is also dowel cooperation installation in through hole, when dowel is hammered into through hole, the inner end of dowel reaches through hole and acts on the side of the bolt that is screwed in, the position of dowel at this time is dowel action position. Such anti-loose nut has the advantages of simple structure.

Description

Technical Field

[0001] This utility model relates to the field of nut technology, specifically to anti-loosening nuts. Background Technology

[0002] In fields such as machinery, automobiles, high-speed rail, and wind power, bolted connections often experience loosening of ordinary nuts due to continuous vibration, temperature changes, or alternating loads, leading to equipment malfunctions or even safety accidents. To address this, various "anti-loosening nuts" have been developed and widely applied, with the core objective of significantly improving connection reliability and durability without sacrificing ease of installation. In recent years, numerous domestic enterprises and research institutions have applied for various utility model and invention patents related to this issue, showcasing diverse technological approaches.

[0003] Patent document CN219452662U, entitled "A High-Strength Loosening Nut," discloses a high-strength loosening nut comprising: a nut body with a first through hole and an internal thread section; a flange and a locking mechanism, the locking mechanism including four locking components, which provides good anti-loosening effect; however, it still requires a flange and has the disadvantage of complex structure. Improvements are needed. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned shortcomings by providing a simple anti-loosening nut.

[0005] The technical solution of this utility model is implemented as follows: an anti-loosening nut includes a nut body, the nut body having a nut hole with a thread inside, the thread being a nut thread; the nut hole being a nut hole for screwing in a bolt; the bolt having a thread, the thread being a bolt thread; the thread having spaced thread protrusions and thread grooves; when in use, the bolt is screwed into the nut hole; the characteristic is that: a through hole is provided on the side of the nut body, this through hole is a side through hole, the inner end of the side through hole reaching the nut hole; a pin is also installed in the through hole in cooperation; when the pin is hammered into the through hole, the inner end of the pin reaches the through hole and acts on the side of the screwed-in bolt; the position of the pin at this time is the pin action position.

[0006] Furthermore, the inner end of the pin has a cutting tooth perpendicular to the thread direction, and the cutting tooth has a cutting edge at the front. When the bolt is screwed into the nut hole and the pin is hammered into the side through hole, the cutting tooth is perpendicular to the thread groove and thread protrusion of the bolt, and the cutting edge cuts into the inside of the thread protrusion and thread groove of the bolt.

[0007] Furthermore, there are multiple side through holes, which are evenly distributed around the nut body.

[0008] Furthermore, the outer end of the pin has a tapered neck, and when the pin is in the pin-operated position, the neck is outside the side of the nut.

[0009] The technical solution of this utility model can also be implemented as follows: an anti-loosening nut includes a nut body, the nut body having a nut hole with a thread inside, the thread being a nut thread, the nut hole being a nut hole for screwing in a bolt, the bolt having a thread, the thread being a bolt thread, the thread having spaced thread protrusions and thread grooves, the bolt being screwed into the nut hole during use, characterized in that: a through hole is provided on the side of the nut body, this through hole is a side through hole, the side through hole passes through the side of the nut hole, and a pin is installed in the side through hole in cooperation, when the bolt is installed in the nut hole and the pin is hammered into the through hole, the side of the pin passes through the side through hole and acts on the side of the screwed-in bolt.

[0010] Furthermore, there are multiple side through holes, which are evenly distributed around the nut body.

[0011] Furthermore, the pin is made of a high-strength material.

[0012] The beneficial effect of this utility model is that such an anti-loosening nut has the advantage of simple structure. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the nut body of this utility model.

[0014] Figure 2 yes Figure 1 A cross-sectional view along the A-A direction (one embodiment with the pin in the pin's active position).

[0015] Figure 3 yes Figure 2 A schematic diagram of the B-B direction in the diagram.

[0016] Figure 4 yes Figure 1 A cross-sectional view along the A-A direction (another embodiment with the pin in the pin's active position).

[0017] Among them: 1. Nut body 11, Nut hole 12, Nut thread 13, Through hole 2, Bolt 21, Bolt thread 3, Pin 31, Cutting tooth 311, Cutting edge 32, Neck 33, Wedge-shaped structure. Detailed Implementation

[0018] The present invention will be further described below with reference to the embodiments.

[0019] like Figure 1 , 2 As shown in Figure 3, an anti-loosening nut includes a nut body 1, which has a nut hole 11 and a thread 12 inside the nut hole. The nut hole is a nut hole for screwing in a bolt 2. The bolt has a thread 21, which has spaced thread protrusions and thread grooves. When in use, the bolt is screwed into the nut hole. The nut body has a through hole 13 on its side, which extends to the nut hole. A pin 3 is installed in the through hole. When the pin is hammered into the through hole, the inner end of the pin reaches the through hole and acts on the side of the bolt being screwed in. The position of the pin at this time is the pin action position.

[0020] With the above-mentioned features of this utility model, after the bolt is installed in the nut, the pin can be hammered into the side mounting hole. The inner end of the pin acts on the side of the bolt, which can also press the side of the bolt inward, preventing the bolt from loosening. It has a good anti-loosening effect and also has the advantage of simple structure.

[0021] To elaborate further, such as Figure 3 As shown, the inner end of the pin has a cutting tooth 31 perpendicular to the thread direction, and the cutting tooth has a cutting edge 311 in front of it. When the bolt is screwed into the nut hole and the pin is hammered into the side through hole, the cutting tooth is perpendicular to the thread groove and thread protrusion of the bolt, and the cutting edge cuts into the inside of the thread protrusion and thread groove of the bolt.

[0022] The aforementioned cutting teeth refer to a structure with a flat-headed cross-section, which is a structure that cuts off (shaves off) the threads of a nut.

[0023] The above-mentioned design of this utility model makes it easier to press the side of the bolt into a concave shape. The cutting teeth are perpendicular to the thread groove and thread protrusion of the bolt, and the cutting edge cuts into the inside of the thread protrusion and thread groove of the bolt. This also makes the concave part a groove perpendicular to the thread direction, which better prevents the nut from loosening.

[0024] This anti-loosening nut can be installed and used once.

[0025] Furthermore, there are multiple side through holes, which are evenly distributed around the nut body.

[0026] The above-mentioned features of this utility model also have the advantage of better anti-loosening effect.

[0027] Furthermore, the outer end of the pin has a tapered neck 32, which is outside the side of the nut when the pin is in its active position.

[0028] The above-mentioned features of this utility model also allow for the later removal of the pin via the neck.

[0029] The technical solution of this utility model can also be implemented as follows: (e.g.) Figure 1 , 4 As shown, an anti-loosening nut includes a nut body 1, which has a nut hole 11 and a thread 12 inside the nut hole. The nut hole is a nut hole for screwing in a bolt 2. The bolt has a thread 21, which has spaced thread protrusions and thread grooves. When in use, the bolt is screwed into the nut hole. The nut body has a through hole 13 on its side. This through hole is a side through hole that passes through the side of the nut hole. A pin 3 is installed in the side through hole. When the bolt is installed in the nut hole and the pin is hammered into the through hole, the side of the pin passes through the side through hole and acts on the side of the bolt being screwed in.

[0030] With the above-mentioned features of this utility model, when the bolt is installed in the nut hole and the pin is hammered into the through hole, the side of the pin acts on the side of the bolt through the side through hole, which forms a concave deformation on the side of the bolt, preventing the bolt from loosening. This utility model has a simple structure and a good anti-loosening effect.

[0031] In one embodiment, when the bolt is installed in the nut hole and the pin is hammered into the through hole, the side of the pin passes through the side through hole and acts on the side of the bolt being screwed in; the side of the pin occupies 1 / 10 of the bolt hole diameter; that is, the depth of the indentation of the bolt is 1 / 10 of its diameter, which ensures a good anti-loosening effect and also ensures the bearing strength of the pin. In one embodiment, the front end of the pin has a wedge-shaped structure 33, which ensures that the pin can be hammered in smoothly.

[0032] Furthermore, there are multiple side through holes, which are evenly distributed around the nut body.

[0033] Furthermore, the pin is made of a high-strength material.

[0034] The above-mentioned features of this utility model ensure the strength of the pin during installation and use. For example, the pin is made of low-alloy high-strength steel, martensitic steel, high-ductility steel, etc.

[0035] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the connection within multiple components or the connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0036] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to those processes, articles, or apparatus / devices.

[0037] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. An anti-loosening nut, comprising a nut body having a nut hole, a thread within the nut hole (a nut thread), the nut hole being a nut hole for screwing in a bolt, the bolt having a thread (a bolt thread), the thread having spaced threaded protrusions and threaded grooves, wherein the bolt is screwed into the nut hole during use, characterized in that: The nut body has a through hole on its side. This through hole is a side through hole. The inner end of the side through hole reaches the nut hole. A pin is installed in the through hole. When the pin is hammered into the through hole, the inner end of the pin reaches the through hole and acts on the side of the screwed-in bolt. The position of the pin at this time is the pin action position.

2. The anti-loosening nut according to claim 1, characterized in that: The inner end of the pin has a cutting tooth perpendicular to the thread direction, and the cutting tooth has a cutting edge in front of it. When the bolt is screwed into the nut hole and the pin is hammered into the side through hole, the cutting tooth is perpendicular to the thread groove and thread protrusion of the bolt, and the cutting edge cuts into the inside of the thread protrusion and thread groove of the bolt.

3. The anti-loosening nut according to claim 1 or 2, characterized in that: The aforementioned side through holes are multiple, and the multiple side through holes are evenly distributed around the nut body.

4. The anti-loosening nut according to claim 1 or 2, characterized in that: The outer end of the pin has a tapered neck, which is outside the side of the nut when the pin is in its active position.

5. An anti-loosening nut, comprising a nut body having a nut hole, a thread within the nut hole, the thread being a nut thread, the nut hole being a nut hole for screwing in a bolt, the bolt having a thread, the thread being a bolt thread, the thread having spaced thread protrusions and thread grooves, wherein the bolt is screwed into the nut hole during use, characterized in that: The nut body has a through hole on its side. This through hole is a side through hole that passes through the side of the nut hole. A pin is installed in the side through hole. When the bolt is installed in the nut hole and the pin is hammered into the through hole, the side of the pin passes through the side through hole and acts on the side of the bolt being screwed in.

6. The anti-loosening nut according to claim 5, characterized in that: The aforementioned side through holes are multiple, and the multiple side through holes are evenly distributed around the nut body.

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