Mechanical fastening assembly

Abstract

The utility model relates to the technical field of mechanical fastening pieces, in particular to a mechanical fastening assembly. The mechanical fastener assembly comprises a flange screw and a flange nut, the flange screw comprises a screw body and a first flange plate which are fixedly connected, a first groove is formed in the face, facing a fastened object, of the first flange plate, and the first groove is used for enabling the first flange plate to generate elastic deformation during fastening; the flange nut comprises a nut body and a second flange plate which are fixedly connected, a second groove is formed in the face, facing a fastened object, of the second flange plate, and the second groove is used for enabling the second flange plate to generate elastic deformation during fastening. When the mechanical fastener assembly is used, the first flange plate and the second flange plate can generate elastic deformation, so that the anti-loosening performance of the flange screw and the flange nut is improved, and a self-tightening effect can be generated during vibration.

Description

Technical Field

[0001] This utility model relates to the technical field of mechanical fasteners, and in particular to a mechanical fastening assembly. Background Technology

[0002] Threaded fasteners are mechanical parts with internal or external threads. Common threaded fasteners include screws and nuts, which are generally used as fasteners to facilitate the combination of multiple components.

[0003] Flange bolts typically refer to bolts with a flange face on the bolt head, while flange nuts refer to nuts with a flange face on one side.

[0004] The design of the flange face can increase the contact area and provide greater friction during pre-tightening. However, existing flange bolts and flange nuts still have insufficient anti-loosening performance. Utility Model Content

[0005] The purpose of this invention is to provide a mechanical fastening assembly flange screw and flange nut to improve the anti-loosening performance of the flange screw and flange nut.

[0006] A mechanical fastener assembly includes a flange bolt and a flange nut.

[0007] The flange bolt includes a bolt body and a first flange that are fixedly connected. The first flange has a first groove on the side facing the object being fastened. The first groove is used to cause elastic deformation of the first flange when it is fastened.

[0008] The flange nut includes a nut body and a second flange that are fixedly connected. The second flange has a second groove on the side facing the object being fastened. The second groove is used to cause the second flange to undergo elastic deformation when fastened.

[0009] Furthermore, the first groove is an annular groove, and / or the second groove is an annular groove. The annular groove structure increases local elastic deformation and generates a self-tightening effect during vibration.

[0010] Furthermore, the screw body and the first flange are integrally connected, and / or the nut body and the second flange are integrally connected.

[0011] Furthermore, the depth of the first groove is 1 / 3 to 1 / 2 of the thickness of the first flange, and / or the depth of the second groove is 1 / 3 to 1 / 2 of the thickness of the second flange.

[0012] Furthermore, the rust-proof layer is a nitrided layer.

[0013] Furthermore, the rust-proof layer is a stainless steel layer.

[0014] Furthermore, a waterproof gasket is provided in the first groove and / or the second groove.

[0015] Furthermore, the waterproof gasket is a silicone gasket.

[0016] Furthermore, the Rockwell hardness of the flange bolts and / or the flange nuts is greater than or equal to 38.

[0017] Compared with the prior art, the present invention has at least the following beneficial effects:

[0018] The groove structure increases local elastic deformation and generates a self-tightening effect during vibration, solving the problems of insufficient loosening of existing ordinary screws and nuts and reliance on auxiliary accessories; it also solves the problem of insufficient water prevention of ordinary flange screws and nuts; the groove structure plus a silicone gasket solves the water leakage problem. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of one embodiment of the mechanical fastening assembly of this utility model;

[0020] Figure 2 for Figure 1 Another structural schematic diagram of the mechanical fastening components in the diagram;

[0021] Figure 3 for Figure 1 A schematic diagram showing the state of the mechanical fastening components when used together;

[0022] Figure 4 This is a schematic diagram of another embodiment of the mechanical fastening assembly of this utility model.

[0023] Figure label:

[0024] 1. First flange; 2. Second flange; 3. First groove; 4. Second groove; 5. Screw body; 6. Flange screw; 7. Flange nut; 8. Nut body; 9. Waterproof gasket. Detailed Implementation

[0025] The mechanical fastening assembly of this utility model will now be described with reference to the schematic diagrams, which illustrate preferred embodiments of the utility model. It should be understood that those skilled in the art can modify the utility model described herein while still achieving its advantageous effects. Therefore, the following description should be understood as being of general knowledge to those skilled in the art and is not intended to limit the utility model. Based on the teachings of this specification, those skilled in the art can form new technical solutions through cross-combinations of different implementation methods without creating technical contradictions; such modifications should all be considered to fall within the protection scope of this patent.

[0026] The present invention will be described more specifically by way of example in the following paragraphs with reference to the accompanying drawings. The advantages and features of the present invention will become clearer from the following description and claims. It should be noted that the drawings are in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.

[0027] The following is in conjunction with the instruction manual appendix. Figure 1 The mechanical fastening assembly of this utility model will be described below.

[0028] In one embodiment, the mechanical fastening assembly of this embodiment includes a flange bolt 6 and a flange nut 7.

[0029] The flange bolt 6 includes a bolt body 5 and a first flange 1 that are fixedly connected. The first flange 1 has a first groove 3 on the side facing the object being fastened. The first groove 3 is used to cause the first flange 1 to undergo elastic deformation when fastened.

[0030] The flange nut 7 includes a fixedly connected nut body 8 and a second flange 2. The second flange 2 has a second groove 4 on the side facing the object being fastened. The second groove 4 is used to cause the second flange 2 to undergo elastic deformation when fastened.

[0031] When in use, the flange bolt 6 is passed through the connecting hole on the object to be fastened, with the first groove 3 facing the object to be fastened; the flange nut 7 is installed on the end of the flange bolt 6 that protrudes from the connecting hole, with the second groove 4 facing the object to be fastened, ensuring that the threads are properly engaged, and gradually tightened. Due to the presence of the first groove 3 and the second groove 4, the first flange 1 and the second flange 2 undergo elastic deformation during the tightening process, thereby improving the anti-loosening performance of the flange bolt 6 and the flange nut 7, and can also generate a self-tightening effect when vibrating.

[0032] In one embodiment, both the first groove 3 and the second groove 4 are annular grooves;

[0033] Alternatively, in another embodiment, the first groove 3 is an annular groove;

[0034] Alternatively, in another embodiment, the second groove 4 is an annular groove;

[0035] The annular groove makes it easier for the first flange 1 and the second flange 2 to undergo elastic deformation, and it is also more convenient to process. Specifically, during processing, the first flange 1 and the second flange 2 can be initially formed, and then the annular groove can be machined out using a lathe tool.

[0036] In another embodiment, the first groove 3 and / or the second groove 4 may also be C-shaped, as long as they can cause elastic deformation of the first flange and the second flange when tightened.

[0037] In one embodiment, the screw body 5 and the first flange 1 are integrally connected, and / or the nut body 8 and the second flange 2 are integrally connected.

[0038] The integrated design enhances the structural strength, anti-loosening performance, sealing performance, and corrosion resistance of the flange bolts 6 and flange nuts 7. Specifically, the flange bolts 6 or flange nuts 7 can be directly machined from a single profile to achieve an integrated connection between the bolt body 5 and the first flange 1, as well as an integrated connection between the nut body 8 and the second flange 2.

[0039] In one embodiment, the depth of the first groove 3 is 1 / 3 to 1 / 2 of the thickness of the first flange 1, and / or the depth of the second groove 4 is 1 / 3 to 1 / 2 of the thickness of the second flange 2.

[0040] The depth of the first groove 3 can be 1 / 3, 2 / 5, or 1 / 2 of the thickness of the first flange 1, and / or the depth of the second groove 4 can be 1 / 3, 2 / 5, or 1 / 2 of the thickness of the second flange 2. This depth of the first groove 3 and / or the second groove 4 allows the first flange 1 and / or the second flange 2 to undergo elastic deformation while also possessing sufficient structural strength and being resistant to damage.

[0041] In one embodiment, the rust-proof layer is a nitriding layer.

[0042] The nitriding layer not only provides the flange bolts 6 and flange nuts 7 with strong rust resistance, but also improves the surface hardness and wear resistance of the flange bolts 6 and flange nuts 7. This makes the flange bolts 6 and flange nuts 7 less susceptible to damage from bumps and other factors, making them suitable for scenarios involving frequent disassembly and assembly or vibration and friction, thus extending the service life of the flange bolts 6 and flange nuts 7.

[0043] In one embodiment, the rust-proof layer is a stainless steel layer.

[0044] Specifically, a stainless steel layer can be plated onto the surfaces of the flange bolts 6 and flange nuts 7 using a physical vapor deposition process. Alternatively, the stainless steel layer can be mechanically plated using a cold welding process. The stainless steel coating effectively resists corrosive environments such as humidity, salt spray, and acid rain, enhancing the corrosion resistance of the flange bolts 6 and flange nuts 7. Furthermore, the stainless steel coating reduces the risk of cold welding between metals, facilitates disassembly, and increases the anti-galling properties of the flange bolts 6 and flange nuts 7.

[0045] In one embodiment, such as Figure 4 As shown, a waterproof gasket 9 is provided in the first groove 3 and / or the second groove 4.

[0046] Specifically, the waterproof gasket 9 can be evenly pressed into the first groove 3 or the second groove 4 using fingers or a special tool. The waterproof gasket 9 not only enhances the waterproof capability of the mechanical fastening assembly, but also absorbs vibration energy, reduces the risk of loosening of the flange bolts 6 and flange nuts 7, and improves the pressure uniformity of the contact surface of the first flange 1 or the second flange 2, thereby significantly improving the sealing performance, corrosion resistance, and long-term stability of the mechanical fastening assembly.

[0047] In one embodiment, preferably, the waterproof gasket 9 is a silicone gasket.

[0048] Silicone has a wide applicable temperature range, enhancing the high and low temperature resistance of the waterproof gasket 9; silicone has low compression set, ensuring long-term sealing without failure, and is also suitable for vibration environments, enhancing the elasticity of the waterproof gasket 9; silicone is resistant to weak acids and alkalis, has a smooth surface, and does not easily attract dust or adhere to metal, enhancing the chemical stability of the waterproof gasket 9. In other embodiments, the waterproof gasket 9 can also be a rubber gasket.

[0049] In one embodiment, the Rockwell hardness of the flange bolt 6 and / or the flange nut 7 is greater than or equal to 38.

[0050] The flange bolts 6 and / or the flange nuts 7 can be subjected to heat treatment processes such as quenching and tempering, induction hardening, or carbonitriding to achieve a Rockwell hardness greater than or equal to 38, for example, 38, 40, or 45. Higher Rockwell hardness enhances the tensile strength, load-bearing capacity, and wear resistance of the flange bolts 6 and / or flange nuts 7.

[0051] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A mechanical fastening assembly, characterized in that, Includes flange bolts and flange nuts; The flange bolt includes a bolt body and a first flange that are fixedly connected. The first flange has a first groove on the side facing the object being fastened. The first groove is used to cause the first flange to undergo elastic deformation when fastened. The flange nut includes a nut body and a second flange that are fixedly connected. The second flange has a second groove on the side facing the object being fastened. The second groove is used to cause the second flange to undergo elastic deformation when fastened.

2. The mechanical fastening assembly according to claim 1, characterized in that, The first groove is an annular groove, and / or the second groove is an annular groove.

3. The mechanical fastening assembly according to claim 1, characterized in that, The screw body and the first flange are integrally connected, and / or the nut body and the second flange are integrally connected.

4. The mechanical fastening assembly according to claim 1, characterized in that, The depth of the first groove is 1 / 3 to 1 / 2 of the thickness of the first flange, and / or the depth of the second groove is 1 / 3 to 1 / 2 of the thickness of the second flange.

5. The mechanical fastening assembly according to claim 1, characterized in that, The flange bolts and / or flange nuts have a rust-proof coating on their surfaces.

6. The mechanical fastening assembly according to claim 5, characterized in that, The rust-proof layer is a nitrided layer.

7. The mechanical fastening assembly according to claim 5, characterized in that, The rust-proof layer is a stainless steel layer.

8. The mechanical fastening assembly according to claim 2, characterized in that, A waterproof gasket is provided in the first groove and / or the second groove.

9. The mechanical fastening assembly according to claim 8, characterized in that, The waterproof gasket is a silicone gasket.

10. The mechanical fastening assembly according to claim 1, characterized in that, The Rockwell hardness of the flange bolts and / or the flange nuts is greater than or equal to 38.

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