Anti-loosening fastening bolt

Abstract

The utility model relates to the field of bolts, in particular to an anti-loosening fastening bolt which comprises a screw and a nut in threaded connection with the outer wall of the screw, a first gasket is welded to the outer wall, located at the bottom of the nut, of the screw, the outer wall of the screw is connected with a second gasket in a sliding mode, and an annular groove is formed in the center of the outer wall of the nut. Positioning holes are formed in the centers of the outer walls of the five sides of the nut, limiting grooves distributed at equal intervals are formed in the outer wall of the bottom end of the screw, and a metal ring is arranged at the position, located at the annular groove, of the outer wall of the nut. The second gasket can not rotate on an object, and the meshing teeth are of a triangular structure, so that the first gasket and the second gasket are meshed with each other, and looseness is avoided. The nut and the screw are connected together through the metal ring and the extension rod, the nut and the screw bear the force of the positioning protrusion on the metal ring and the extension rod when loosened, then the nut is prevented from loosening on the screw, use is convenient, and fastening performance is kept.

Description

Technical Field

[0001] The utility model relates to the technical field of bolts, in particular to an anti-loosening fastening bolt. Background Art

[0002] Bolt: a mechanical part, a cylindrical threaded fastener used with a nut. A type of fastener composed of two parts, a head and a screw rod (a cylinder with external threads), which needs to cooperate with a nut to be used for fastening and connecting two parts with through holes;

[0003] When the objects connected by bolts are vibrated, the fastening connection between the nut and the screw will become loose, making the fixation of the objects unstable. Seriously, the objects may fall, causing losses and injuries. In order to prevent the bolt connection from becoming loose, generally a gasket is sleeved on one end of the nut and the screw. After fastening, the gasket can reduce partial loosening between the bolt and the nut, but over time and with continuous vibration, the bolt will still become loose. Content of the Utility Model

[0004] The purpose of the utility model is to address the above-mentioned problems and deficiencies by proposing an anti-loosening fastening bolt: a metal ring and an extension rod connect the nut and the screw together. When the nut and the screw become loose, they are subjected to the forces of the positioning protrusions on the metal ring and the extension rod, thereby preventing the nut from loosening on the screw, facilitating use, maintaining tightness, and solving the problem of bolt loosening.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme:

[0006] An anti-loosening fastening bolt includes a screw and a nut threadedly connected to the outer wall of the screw. A first gasket is welded to the outer wall of the screw at the bottom of the nut, and a second gasket is slidably connected to the outer wall of the screw. A ring groove is formed at the center of the outer wall of the nut, and positioning holes are formed at the centers of the five side outer walls of the nut. Equally spaced limiting grooves are formed on the outer wall of the bottom end of the screw, and a metal ring is provided on the outer wall of the nut at the ring groove.

[0007] Preferably, positioning protrusions are welded to the outer walls of the metal ring at the positioning holes, and the positioning protrusions are slidably connected in the positioning holes. The metal ring is inserted into the ring groove of the nut.

[0008] Preferably, an extension rod is welded to one outer wall of the metal ring, and the other end of the extension rod is located in the limiting groove of the screw;

[0009] According to the above scheme: the metal ring and the extension rod connect the nut and the screw together. When the nut and the screw become loose, they are subjected to the forces of the positioning protrusions on the metal ring and the extension rod, thereby preventing the nut from loosening on the screw, facilitating use, and maintaining tightness.

[0010] Preferably, a corner protrusion is welded to the center of the outer wall at the bottom of the second gasket, and a connecting piece is provided at the corner protrusion of the second gasket. Angular holes adapted to the corner protrusions are formed in the outer walls at both ends of the connecting piece;

[0011] According to the above solution: The second gasket cannot rotate on the object, and the engaging teeth are triangular in structure, so that the first gasket and the second gasket engage with each other to prevent loosening.

[0012] Preferably, engaging teeth are welded to the outer walls of the first gasket and the second gasket close to each other at equal intervals, and the cross-section of the engaging teeth is triangular in structure, and the engaging teeth in the first gasket and the second gasket engage with each other.

[0013] Preferably, a triangular groove is formed in the outer wall at the top of one end of the screw, and a triangular rod is provided at the top of the triangular groove, and both ends of the triangular rod are inserted into the triangular groove.

[0014] The beneficial effects of the present invention are as follows:

[0015] 1. The second gasket cannot rotate on the object, and the engaging teeth are triangular in structure, so that the first gasket and the second gasket engage with each other to prevent loosening;

[0016] 2. The metal ring and the extension rod connect the nut and the screw together. When the nut and the screw are loose, they are subjected to the forces of the positioning protrusions and the extension rod on the metal ring, thereby preventing the nut from loosening on the screw, facilitating use and maintaining tightness. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is an overall unfolded structural schematic diagram of a loosening-proof fastening bolt proposed by the present invention;

[0018] Figure 2 is an unfolded partial structural schematic diagram of a loosening-proof fastening bolt proposed by the present invention;

[0019] Figure 3 is an installation method structural schematic diagram of a loosening-proof fastening bolt proposed by the present invention.

[0020] In the figure: 1 screw, 2 first gasket, 3 nut, 4 second gasket, 5 engaging teeth, 6 corner protrusion, 7 connecting piece, 8 angular hole, 9 triangular groove, 10 triangular rod, 11 ring groove, 12 positioning hole, 13 limiting groove, 14 metal ring, 15 positioning protrusion, 16 extension rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the 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 of the embodiments.

[0022] Embodiment:

[0023] Referring to Figures 1-3 , a loosening-preventing fastening bolt includes a screw 1 and a nut 3 threadedly connected to the outer wall of the screw 1. A first gasket 2 is welded to the outer wall of the screw 1 at the bottom of the nut, and a second gasket 4 is slidably connected to the outer wall of the screw 1. A ring groove 11 is formed at the center of the outer wall of the nut 3, and positioning holes 12 are formed at the centers of the outer walls of five sides of the nut 3. Limiting grooves 13 are formed at equal intervals on the outer wall of the bottom end of the screw 1, and a metal ring 14 is provided at the ring groove 11 on the outer wall of the nut 3.

[0024] Positioning protrusions 15 are welded to the outer walls of the metal ring 14 at the positioning holes 12, and the positioning protrusions 15 are slidably connected in the positioning holes 12. The metal ring 14 is inserted into the ring groove 11 of the nut 3.

[0025] An extension rod 16 is welded to one outer wall of the metal ring 14, and the other end of the extension rod 16 is located in the limiting groove 13 of the screw 1. When the nut 3 and the screw 1 become loose, they are unable to rotate due to the forces of the positioning protrusions 15 and the extension rod 16 on the metal ring 14, thereby preventing the nut 3 from loosening on the screw 1, facilitating use, and maintaining tightness.

[0026] A corner protrusion 6 is welded to the center of the bottom outer wall of the second gasket 4, and a connecting piece 7 is provided at the corner protrusion 6 of the second gasket 4. Angular holes 8 adapted to the corner protrusion 6 are formed on the outer walls of both ends of the connecting piece 7. The second gasket 4 is restricted by the angular holes 8 on the connecting piece 7 to the corner protrusion 6, so that the second gasket 4 cannot rotate on the object.

[0027] Engaging teeth 5 are welded to the mutually adjacent outer walls of the first gasket 2 and the second gasket 4 at equal intervals. The cross-section of the engaging teeth 5 is a triangular structure, and the engaging teeth 5 on the first gasket 2 and the second gasket 4 are engaged with each other. The engaging teeth 5 are of a triangular structure, so that the first gasket 2 and the second gasket 4 are engaged with each other to prevent loosening.

[0028] A triangular groove 9 is formed at the top outer wall of one end of the screw 1, and a triangular rod 10 is provided at the top of the triangular groove 9. Both ends of the triangular rod 10 are inserted into the triangular groove 9. The two screws 1 are restricted by the triangular rod 10 and the connecting piece 7 to further prevent the screw 1 and the nut 3 from loosening and improve the tightness of the connection.

[0029] Working principle: When in use, a washer two 4 is sleeved on the outer wall of the screw 1. A connecting piece 7 is inserted through the angular hole 8 at the angular protrusion 6 at the bottom of the washer two 4. Then, the screw 1 is passed through the reserved holes in two objects, and the nut 3 is screwed onto the outer wall of the screw 1 from the bottom end of the screw 1. As the nut 3 rotates, the screw 1 cooperates with the nut 3 to fix the objects. At this time, the washer one 2 on the outer wall of the screw 1 is fixed together with the washer two 4 due to tightening. The connecting piece 7 extends to the bottom of the washer two 4 of another screw 1. Due to the restriction of the angular protrusion 6 on the connecting piece 7 through the angular hole 8 on the washer two 4, the washer two 4 cannot rotate on the object. The engaging teeth 5 are of a triangular structure, so that the washer one 2 and the washer two 4 engage with each other to avoid loosening. After the nut 3 is tightened, the metal ring 14 and the positioning protrusion 15 are aligned with the positioning hole 12 in the ring groove 11, and the metal ring 14 is sleeved in the ring groove 11. One end of the extension rod 16 moves into the limiting groove 13. The metal ring 14 and the extension rod 16 connect the nut 3 and the screw 1 together. When the nut 3 and the screw 1 are loose, they cannot rotate due to the force from the positioning protrusion 15 on the metal ring 14 and the extension rod 16, thereby avoiding the loosening of the nut 3 on the screw 1, facilitating use, and maintaining tightness. Finally, the triangular rod 10 is inserted into the triangular groove 9 at one end of the screw 1. The two screws 1 restrict each other through the triangular rod 10 and the connecting piece 7, further avoiding the loosening of the screw 1 and the nut 3 and improving the tightness of the connection.

[0030] The exemplary embodiments of the present invention are described in detail with reference to the embodiments. However, those skilled in the art can understand that, without departing from the concept of the present invention, various modifications and variations can be made to the above specific embodiments, and various combinations can be made to the technical features and structures proposed by the present invention, without exceeding the protection scope of the present invention. The protection scope of the present invention is determined by the appended claims. The foregoing description of the specific exemplary embodiments of the present invention is not intended to limit the present invention to the precise forms disclosed. And obviously, many changes and variations can be made in accordance with the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the present invention and its practical applications, so that those skilled in the art can implement and utilize various different exemplary embodiments of the present invention as well as various different selections and changes. The scope of the present invention is intended to be defined by the claims and their equivalents.

Claims

1. A loosening-proof fastening bolt, comprising a screw (1) and a nut (3) threadedly connected to the outer wall of the screw (1), characterized in that, A gasket one (2) is welded to the outer wall of the screw (1) at the bottom of the nut, and a gasket two (4) is slidably connected to the outer wall of the screw (1). A ring groove (11) is formed at the center of the outer wall of the nut (3), and positioning holes (12) are formed at the centers of the outer walls of five sides of the nut (3). A plurality of limit grooves (13) are formed at equal intervals on the outer wall of the bottom end of the screw (1), and a metal ring (14) is arranged on the outer wall of the nut (3) at the ring groove (11).

2. The anti-loosening fastening bolt according to claim 1, characterized in that, Positioning protrusions (15) are welded to the outer walls of the metal ring (14) at the positioning holes (12), and the positioning protrusions (15) are slidably connected in the positioning holes (12). The metal ring (14) is inserted into the ring groove (11) of the nut (3).

3. The anti-loosening fastening bolt according to claim 1, characterized in that, An extension rod (16) is welded to one side outer wall of the metal ring (14), and the other end of the extension rod (16) is located in the limit groove (13) of the screw (1).

4. The anti-loosening fastening bolt according to claim 1, characterized in that, A corner protrusion (6) is welded to the center of the bottom outer wall of the gasket two (4), and a connecting piece (7) is arranged on the gasket two (4) at the corner protrusion (6). Corner holes (8) adapted to the corner protrusion (6) are formed on the outer walls of both ends of the connecting piece (7).

5. The anti-loosening fastening bolt according to claim 1, characterized in that, Biting teeth (5) are welded to the mutually close side outer walls of the gasket one (2) and the gasket two (4) at equal intervals. The cross section of the biting teeth (5) is a triangular structure, and the biting teeth (5) on the gasket one (2) and the gasket two (4) are mutually engaged.

6. The anti-loosening fastening bolt according to claim 1, characterized in that, A triangular groove (9) is formed at the top outer wall of one end of the screw (1), and a triangular rod (10) is arranged at the top of the triangular groove (9). Both ends of the triangular rod (10) are inserted into the triangular groove (9).

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