A loosening-proof nut assembly

Abstract

The present invention discloses an anti-loosening nut assembly, including an upper nut and a lower nut with corresponding corners respectively. A protrusion is fixed at a corner of the bottom of the upper nut. A first arc groove is provided on the left side of the top of the upper nut, and a second arc groove with the same depth and smoothly connected to the first arc groove is provided on the right side of the top of the upper nut. One side outer wall of the protrusion is in contact with the inner wall of the second arc groove. Two first installation grooves are correspondingly provided on both sides of the bottom of the upper nut, and two through holes respectively communicating with the two first installation grooves are provided on the top of the upper nut. A support seat adapted to each of the two first installation grooves is respectively provided in the two first installation grooves, and a splicing mechanism capable of connecting and separating the upper nut and the lower nut is respectively provided on the two support seats. The present invention has the characteristics of good anti-loosening effect and convenient installation and disassembly.

Description

Technical Field

[0001] The present invention belongs to the technical field of nuts, and particularly relates to an anti-loosening nut assembly. Background Art

[0002] A nut, also known as a screw cap, is a part that is screwed together with a bolt or a screw rod to play a fastening role. Nuts are an essential component in all manufacturing machinery. According to different materials, it can be divided into several major types such as carbon steel, stainless steel, and non-ferrous metals. Since nuts are widely used, anti-loosening measures need to be taken during use in some important occasions, and the anti-loosening nut is one of the anti-loosening measures.

[0003] However, for the existing anti-loosening nuts, a locking piece is generally added in the threaded hole of the thread. The locking piece is likely to cause wear to the screw rod and the nut itself, greatly reducing the service life of the nut. At the same time, the existing anti-loosening nuts have poor locking or self-locking effects, and are prone to loosening when in a vibrating working environment, failing to achieve the anti-loosening effect. Summary of the Invention

[0004] The purpose of the present invention is to provide an anti-loosening nut assembly to improve the anti-loosening performance and facilitate installation and disassembly.

[0005] To solve the above technical problems, the present invention provides the following technical solution: An anti-loosening nut assembly includes an upper nut and a lower nut whose respective corners correspond to each other. A protrusion is fixed at a corner at the bottom of the upper nut. A first arc groove is provided on the left side at the top of the upper nut, and a second arc groove with the same depth and smoothly connected to the first arc groove is provided on the right side at the top of the upper nut. The outer wall of one side of the protrusion is in contact with the inner wall of the second arc groove. Two first installation grooves are correspondingly provided on both sides at the bottom of the upper nut, and two through holes respectively communicating with the two first installation grooves are provided at the top of the upper nut. A support seat adapted to each of them is provided in each of the two first installation grooves, and a splicing mechanism capable of connecting and separating the upper nut and the lower nut is provided on each of the two support seats.

[0006] Further, the splicing mechanism includes first studs respectively fixed on the support seats. The first studs are arranged in the through holes. A threaded sleeve adapted to the first studs is sleeved outside the first studs. A knob sleeved on the first stud is fixed at the bottom of the threaded sleeve. A second stud adapted to the threaded sleeve is further provided in the threaded sleeve, and the top of the second stud is fixed in the second installation groove of the upper nut.

[0007] Further, the support seat is an incomplete disc structure, and its bottom is flush with the bottom of the upper nut.

[0008] Further, the protrusion is in the structure of a triangular prism, and the distance from its bottom end to the first arc groove is 2-4 mm.

[0009] Further, the outer wall of the knob is evenly provided with tooth grooves, and the knob is completely placed in its corresponding first installation groove.

[0010] Further, the centers of the arcs where the outer sides of the first arc groove and the second arc groove are located are not concentric, and both deviate from the axis of the upper nut.

[0011] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: By providing an upper nut, a lower nut and a splicing mechanism, it is used to realize the rapid splicing and separation of the upper nut and the lower nut. The process of screwing in and out makes the upper nut and the lower nut become an integral body, which is convenient for rapid installation and removal; By providing a first arc groove, a second arc groove and a protrusion, it is used to achieve the anti-loosening effect. When the installation is completed, the upper nut and the lower nut are separated by the splicing mechanism. If the upper nut and the lower nut rotate relative to each other, the protrusion of the upper nut squeezes the side wall of the first arc groove or the second arc groove to generate a shearing force, which hinders the rotation of the lower nut, thereby achieving the anti-loosening effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention, and do not constitute a limitation to the present invention. In the drawings:

[0013] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0014] Figure 2 is a schematic diagram of the overall decomposition of the present invention;

[0015] Figure 3 is a schematic diagram of the structure of the lower nut of the present invention;

[0016] Figure 4 is a schematic diagram of the installation of the splicing mechanism of the present invention;

[0017] Figure 5 is a schematic diagram of the installation of the support seat of the present invention;

[0018] Figure 6 is a schematic diagram of the structure of the upper nut of the present invention;

[0019] Figure 7 is a combined schematic diagram of the splicing mechanism of the present invention;

[0020] In the figure: 1. Lower nut; 11. First installation groove; 12. First arc groove; 13. Through hole; 14. Second arc groove; 2. Upper nut; 21. Second installation groove; 22. Protrusion; 3. Support seat; 4. Splicing mechanism; 41. First stud; 42. Threaded sleeve; 43. Knob; 44. Second stud. Detailed implementation manner

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0022] Please refer to Figure 1-7 , the present invention provides a technical solution: an anti-loosening nut assembly, including an upper nut 2 and a lower nut 1 with corresponding corners respectively. A protrusion 22 is fixed at a corner of the bottom of the upper nut 2. A first arc groove 12 is provided on the left side of the top of the lower nut 1. A second arc groove 14 with the same depth and smoothly connected to the first arc groove 12 is provided on the right side of the top of the lower nut 1. One side outer wall of the protrusion 22 is in contact with the inner wall of the second arc groove 14. Two first installation grooves 11 are correspondingly provided on both sides of the bottom of the lower nut 1. Two through holes 13 respectively communicating with the two first installation grooves 11 are provided on the top of the lower nut 1. A support seat 3 adapted to each of them is respectively provided in the two first installation grooves 11. A splicing mechanism 4 capable of connecting and separating the upper nut 2 and the lower nut 1 is respectively provided on the two support seats 3.

[0023] The splicing mechanism 4 includes a first stud 41 respectively fixed on the support seat 3. The first stud 41 is arranged in the through hole 13. A threaded sleeve 42 adapted to it is sleeved outside the first stud 41. A knob 43 sleeved on the outside of the first stud 41 is fixed at the bottom of the threaded sleeve 42. A second stud 44 adapted to it is also provided in the threaded sleeve 42. The top of the second stud 44 is fixed in the second installation groove 21 of the upper nut 2. Through the splicing mechanism 4, the splicing and separation of the upper nut 2 and the lower nut 1 can be quickly realized, which is convenient for the installation and removal of the nut assembly.

[0024] The support seat 3 is an incomplete disc structure, and its bottom is flush with the bottom of the lower nut 1. The support seat 3 and the lower nut 1 are fixed by welding, which is convenient for improving the stability of the support seat 3 and further improving the stability of the first stud 41.

[0025] The protrusion 22 is a triangular prism structure, and the distance from its bottom end to the first arc groove 12 is 2-4 mm, so that the bottom of the protrusion 22 does not contact the first arc groove 12 and the second arc groove 14, preventing damage to the lower nut 1 when the upper nut 2 and the lower nut 1 rotate relative to each other.

[0026] The outer wall of the knob 43 is evenly provided with tooth grooves, and the knob 43 is completely placed in its corresponding first installation groove 11, which is convenient for the rotation of the knob 43 and does not affect the external shape structure of the lower nut 1.

[0027] The centers of the arcs where the outer sides of the first arc groove 12 and the second arc groove 14 are located are not concentric and both deviate from the axis of the lower nut 1. The radii of the arcs where the outer sides of the first arc groove 12 and the second arc groove 14 are located are the same. Along the clockwise direction, both the first arc groove 12 and the second arc groove 14 gradually become narrower, which is convenient for achieving the anti-loosening effect.

[0028] During operation, first, keep the whole body, that is, the upper nut 2 and the lower nut 1 are not separated. Screw the whole body into the screw or bolt that it cooperates with. After the whole body is tightened, drive the threaded sleeve 42 to rotate by rotating the knob 43, and make it move downward so that it disengages from the second stud 44 that it cooperates with. Adjust the two threaded sleeves 42 to move in the corresponding through holes 13 respectively through the two knobs 43, so that their tops are all located under the bottom wall of the first arc groove 12. At this time, the upper nut 2 and the lower nut 1 are separated. After separation, if the upper nut 2 and the lower nut 1 rotate relatively, and when the upper nut 2 rotates clockwise relative to the lower nut 1, the protrusion 22 presses against the side wall of the second arc groove 14, and there is a shearing force on the side wall of the second arc groove 14, preventing the upper nut 2 and the lower nut 1 from rotating relatively. When the upper nut 2 rotates counterclockwise relative to the lower nut 1, the protrusion 22 will contact the side wall of the first arc groove 12. At this time, the protrusion 22 presses against the side wall of the first arc groove 12, and there is a shearing force on the side wall of the first arc groove 12, thereby achieving the anti-loosening effect; when removing the lower nut 1 assembly, adjust the upper nut 2 clockwise or counterclockwise to make its respective edges correspond to the respective edges of the lower nut 1, and make the first stud 41 and the second stud 44 correspond. Drive the threaded sleeve 42 to move through the knob 43, so that the corresponding first stud 41 and the second stud 44 are reconnected together, thereby making the upper nut 2 and the lower nut 1 into one body, which is convenient for quickly screwing out and facilitating the installation and disassembly of this nut assembly.

[0029] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0030] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An anti-loosening nut assembly, characterized in that: It includes an upper nut (2) and a lower nut (1) with corresponding edges and corners respectively. A protrusion (22) is fixed at a corner of the bottom of the upper nut (2). A first arc groove (12) is provided on the left side of the top of the lower nut (1). A second arc groove (14) with the same depth and smoothly connected to the first arc groove (12) is provided on the right side of the top of the lower nut (1). One outer wall of the protrusion (22) is in contact with the inner wall of the second arc groove (14). Two first mounting grooves (11) are correspondingly provided on both sides of the bottom of the lower nut (1). Two through holes (13) respectively communicating with the two first mounting grooves (11) are provided on the top of the lower nut (1). A support seat (3) adapted to each of the two first mounting grooves (11) is respectively provided in the two first mounting grooves (11). A splicing mechanism (4) capable of connecting and separating the upper nut (2) and the lower nut (1) is respectively provided on the two support seats (3). The splicing mechanism (4) includes first studs (41) respectively fixed on the support seats (3). The first studs (41) are arranged in the through holes (13). A threaded sleeve (42) adapted to the first studs (41) is sleeved outside the first studs (41). A knob (43) sleeved outside the first studs (41) is fixed at the bottom of the threaded sleeve (42). A second stud (44) adapted to the threaded sleeve (42) is further provided in the threaded sleeve (42). The top of the second stud (44) is fixed in the second mounting groove (21) of the upper nut (2). During installation, the upper nut (2) and the lower nut (1) are not separated, and the whole is screwed into a screw or bolt matched with them. After being matched with the screw or bolt, the threaded sleeve (42) is driven to disengage from the second stud (44) by rotating the knob (43). When taking out, the edges and corners of the upper nut (2) are adjusted to correspond to those of the lower nut (1), and the threaded sleeve (42) is driven to be matched with the second stud (44) again by rotating the knob (43).

2. The anti-loosening nut assembly according to claim 1, characterized in that: The support seat (3) is of an incomplete disc structure, and its bottom is flush with the bottom of the lower nut (1).

3. The anti-loosening nut assembly according to claim 2, wherein: The protrusion (22) is of a triangular prism structure, and the distance from its bottommost end to the first arc groove (12) is 2 - 4 mm.

4. The anti-loosening nut assembly according to claim 1, characterized in that: Tooth grooves are evenly provided on the outer wall of the knob (43), and the knob (43) is completely placed in its corresponding first mounting groove (11).

5. The anti-loosening nut assembly according to claim 1, characterized in that: The centers of the arcs where the outer sides of the first arc groove (12) and the second arc groove (14) are located are not concentric and both deviate from the axis of the lower nut (1).

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