Lock bolt assembly

Abstract

The utility model relates to a lock bolt component, including bolt, nut and gasket, one end face of nut is provided with a plurality of protruding portion, between adjacent protruding portion there is provided first rotation surface, first rotation surface is inclined plane, protruding portion is provided with first side portion and second side portion, first side portion and second side portion are located the protruding portion both sides, and the first side portion and the second side portion are located on the gasket. The height of the first side portion is larger than that of the second side portion, the top faces of the protruding portions are spiral faces, the gasket is provided with a plurality of limiting protruding portions, the number of the limiting protruding portions is the same as that of the protruding portions, a second rotating face is arranged between every two adjacent limiting protruding portions and is an inclined face, and a first limiting face and a second limiting face are arranged on the two sides of each limiting protruding portion respectively. The first limiting surface is higher than the second limiting surface. According to the lock bolt assembly, the combination stability of the nut and the bolt can be improved, the loosening risk of the bolt during vibration is reduced, and the lock bolt assembly is high in strength and not prone to damage; in addition, the bolt can be prevented from being disassembled, and the anti-disassembling effect is improved.

Description

Technical Field

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

[0002] At present, a large number of bolts are used on vehicles. Since the vehicles will be bumped and vibrated during use, the bolts are easy to loosen and fall off. Bolts are usually used in pairs with nuts. Therefore, the prior art uses methods to strengthen the bonding force between the bolts and nuts to prevent the bolts from loosening. For example, the patent with publication number CN110566563A discloses an anti-loosening bolt, which is provided with an anti-loosening part on the screw rod, and a plug-in part that can produce slight elastic deformation is provided on the anti-loosening part, so that when the nut is loosened, the plug-in part is squeezed toward one side of the screw rod, so that the inner wall of the plug-in part is pressed against the screw rod, so that the nut becomes tighter and tighter as it moves. However, in the above technical solution, the plug-in part needs to be provided on the thread that matches the screw rod and needs to be elastically deformed. The strength of the plug-in part during use is difficult to guarantee, which is easy to cause breakage. Utility Model Content

[0003] In order to solve the problems of the prior art, the utility model provides an anti-loosening bolt assembly which can reduce the loosening of bolts, is convenient for assembly and has good stability.

[0004] The specific technical scheme is as follows: A kind of anti-loosening bolt assembly comprises a bolt, a nut and a gasket, wherein one end face of the nut has a plurality of protrusions, a first rotating surface is provided between adjacent protrusions, the first rotating surface is an inclined surface, the protrusion has a first side portion and a second side portion, the first and second side portions are located on both sides of the protrusion, the height of the first side portion is greater than that of the second side portion, the top surface of the protrusion is a spiral surface, the gasket has a plurality of limiting protrusions, the number of the limiting protrusions is the same as that of the protrusions, a second rotating surface is provided between adjacent limiting protrusions, the second rotating surface is an inclined surface, the first limiting surface and the second limiting surface are respectively provided on both sides of the limiting protrusion, and the height of the first limiting surface is greater than that of the second limiting surface.

[0005] In some embodiments, the gasket has a through hole, the second rotating surface is arranged around the through hole, the nut has a screw hole, the screw hole is arranged corresponding to the bolt, and the first rotating surface is arranged around the screw hole.

[0006] In some embodiments, the inner wall surface of the limiting protrusion is an arc surface and is connected to the inner wall of the through hole.

[0007] In some embodiments, there are two protrusions, and the two protrusions are arranged opposite to each other.

[0008] In some embodiments, a slot is provided in the end portion of the bolt, an internal thread is provided above the slot, a locking piece is provided in the slot, the locking piece is provided with a matching thread, and the matching thread is provided corresponding to the internal thread.

[0009] In some embodiments, a stop surface is provided in the slot, and a matching surface is provided on the side of the locking member.

[0010] In some embodiments, an annular groove is provided on the top of the locking member, and a positioning groove is provided in the annular groove.

[0011] Technical effect of the utility model: an anti-loosening bolt assembly of the utility model can improve the combination stability of the nut and the bolt, reduce the risk of bolt loosening during vibration, has high strength and is not easily damaged; in addition, it can prevent the bolt from being disassembled, thereby improving the anti-disassembly effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of an anti-loosening bolt assembly according to an embodiment of the utility model.

[0013] Figure 2 It is a schematic diagram of a nut according to an embodiment of the utility model.

[0014] Figure 3 It is a schematic diagram of a gasket according to an embodiment of the utility model.

[0015] Figure 4 It is a schematic diagram of the nut of the embodiment of the utility model when being locked.

[0016] Figure 5 It is a schematic diagram of a bolt according to an embodiment of the utility model.

[0017] Figure 6 It is a schematic diagram of a locking member and a tool according to an embodiment of the utility model. DETAILED DESCRIPTION

[0018] The essential features and advantages of the present invention are further described below in conjunction with examples, but the present invention is not limited to the examples listed.

[0019] like Figures 1 to 6As shown, a bolt assembly for preventing loosening of the embodiment includes a bolt 1, a nut 2 and a gasket 3. The bolt 1 passes through a part 10, and the gasket 3 is sleeved on the bolt and locked by the nut 2. The nut 2 has a plurality of protrusions 4 on one end surface, and a first rotating surface 41 is provided between adjacent protrusions 4. The first rotating surface 41 is an inclined surface, that is, the first rotating surface 41 has a spiral upward trend. The protrusion 4 has a first side portion 42 and a second side portion 43. The first and second side portions are located on both sides of the protrusion 4. The height of the first side portion 42 is greater than that of the second side portion 43. The top surface 44 of the protrusion 4 is a spiral surface. The gasket 3 has a plurality of limiting protrusions 5. The number of limiting protrusions 5 is the same as that of the protrusion 4. A second rotating surface 51 is provided between adjacent limiting protrusions 5. The second rotating surface 51 is an inclined surface. The first limiting surface 52 and the second limiting surface 53 are provided on both sides of the limiting protrusion 5. The height of the first limiting surface 52 is greater than that of the second limiting surface 53. In the above technical solution, when the nut 2 rotates clockwise on the bolt 1, the protrusion 4 interferes with the limiting protrusion 5, thereby driving the gasket 3 to rotate upward synchronously until it presses against the part 10. Since the nut and the gasket are in contact through the rotating surface, the gasket 3 can be rotated clockwise so that its second limiting surface 53 abuts against the second side portion 43 (such as Figure 4 As shown in the figure, the nut can be prevented from rotating due to factors such as vibration. At the same time, since the rotating surface contact has axial pressure, the nut is axially pressed, making the thread engagement between it and the bolt more stable. The above technical solution can improve the stability of the combination of the nut and the bolt and reduce the risk of the bolt loosening during vibration.

[0020] In this embodiment, the gasket 3 has a through hole 31, and the second rotating surface 51 is arranged around the through hole 31. The nut 2 has a screw hole 21, and the screw hole 21 is arranged corresponding to the bolt 1. The first rotating surface 41 is arranged around the screw hole. The inner wall surface 54 of the limiting protrusion 5 is an arc surface and is connected to the inner wall of the through hole 31, so as to increase the volume of the limiting protrusion 5. There are two protrusions 4, which are arranged opposite to each other, and two corresponding limiting protrusions 5 are also arranged. A slot 61 is arranged in the end portion 6 of the bolt 1, and an internal thread 62 is arranged above the slot 61. A locking member 7 is arranged in the slot 61, and the locking member 7 is provided with a matching thread 71. The matching thread 71 is arranged corresponding to the internal thread 62. When the bolt 1 is locked, the locking member 7 is rotated and locked into the slot 61, so that the slot 61 can be closed to prevent the bolt from being disassembled. A stopper surface 63 is arranged in the slot 61, and a matching surface 72 is arranged on the side of the locking member 7. The bottom of the locking member 7 is provided with a clamping plate 73, which can be clamped into the gap below the stop surface 63, so that the locking member 7 is more secure. The top of the locking member 7 is provided with an annular groove 74, and a positioning groove 75 is provided in the annular groove 74. The tool 8 is provided with an annular portion 81 and a clamping block 82 corresponding to the annular groove and the positioning groove 75, and the annular portion 81 is inserted into the annular groove 74, and the clamping block 82 is inserted into the positioning groove 75, so that the locking member 7 can be rotated by the tool 8.

[0021] An anti-loosening bolt assembly of the present embodiment can improve the stability of the combination of the nut and the bolt, reduce the risk of the bolt loosening during vibration, has high strength and is not easily damaged; in addition, it can prevent the bolt from being disassembled, thereby improving the anti-disassembly effect.

[0022] It should be pointed out that the above preferred embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. An anti-loosening bolt assembly, comprising a bolt, a nut and a washer, characterized in that: One end face of the nut has a plurality of protrusions, and a first rotating surface is provided between adjacent protrusions, and the first rotating surface is an inclined surface. The protrusion has a first side portion and a second side portion, and the first and second side portions are located on both sides of the protrusion, and the height of the first side portion is greater than that of the second side portion. The top surface of the protrusion is a spiral surface, and the gasket has a plurality of limiting protrusions, and the number of the limiting protrusions is the same as that of the protrusions. There is a second rotating surface between adjacent limiting protrusions, and the second rotating surface is an inclined surface. The first limiting surface and the second limiting surface are respectively provided on both sides of the limiting protrusion, and the height of the first limiting surface is greater than that of the second limiting surface.

2. The anti-loosening bolt assembly according to claim 1, characterized in that: The gasket has a through hole, the second rotating surface is arranged around the through hole, the nut has a screw hole, the screw hole is arranged corresponding to the bolt, and the first rotating surface is arranged around the screw hole.

3. The anti-loosening bolt assembly according to claim 2, characterized in that: The inner wall surface of the limiting protrusion is an arc surface and is connected to the inner wall of the through hole.

4. The anti-loosening bolt assembly according to claim 3, characterized in that: There are two protrusions, which are arranged opposite to each other.

5. The anti-loosening bolt assembly according to claim 1, characterized in that: A clamping groove is arranged in the end portion of the bolt, an internal thread is arranged above the clamping groove, a locking piece is arranged in the clamping groove, and the locking piece is provided with a matching thread, and the matching thread is arranged correspondingly to the internal thread.

6. The anti-loosening bolt assembly according to claim 5, characterized in that: A stop surface is provided in the slot, and a matching surface is provided on the side of the locking piece.

7. The anti-loosening bolt assembly according to claim 6, characterized in that: The top of the locking piece is provided with an annular groove, and a positioning groove is provided in the annular groove.

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