Waterproof and anti-loose nut

Abstract

The utility model relates to a waterproof lock nut, including the nut body, still including the waterproof sleeve that waterproof sleeve of plastic material is made, the connecting boss is formed on the nut body outside end face, the waterproof sleeve one end opening forms the joint interface matched with connecting boss, the connecting boss is inserted into the joint interface and makes connecting boss joint in the joint interface, and the waterproof sleeve covers the nut body outside port. This waterproof lock nut can prevent rainwater from invading the meshing place of the nut body and the bolt after the nut body and the bolt cooperate, improves the waterproof performance of the nut body, and guarantees the stability after the nut body and the bolt connect.

Description

Technical Field

[0001] This utility model relates to the field of fastener technology, and in particular to a waterproof and anti-loosening nut. Background Technology

[0002] A nut is a fastener used in conjunction with a bolt to secure two or more objects together. In outdoor environments, rainwater can seep into the meshing section of the nut and bolt through the gap between the outer end of the nut and the bolt, causing corrosion. This affects the connection strength between the nut and bolt and makes it inconvenient to disassemble the nut later.

[0003] To address the aforementioned problems, this utility model provides improvements. Utility Model Content

[0004] This utility model proposes a waterproof and anti-loosening nut, which solves the above-mentioned problems existing in the use of the prior art.

[0005] The technical solution of this utility model is implemented as follows: A waterproof and anti-loosening nut includes a nut body and a waterproof sleeve made of plastic. A connecting boss is formed on the outer end face of the nut body. One end of the waterproof sleeve has an opening that forms a snap-fit ​​interface that matches the connecting boss. The connecting boss extends into the snap-fit ​​interface so that the connecting boss is snapped into the snap-fit ​​interface, thereby covering the outer end of the nut body with the waterproof sleeve.

[0006] Preferably, the connecting boss is a hollow cylinder with a snap-fit ​​groove formed on its circumference, and a snap-fit ​​protrusion matching the snap-fit ​​groove is formed on the inner wall of the snap-fit ​​interface. The snap-fit ​​protrusion engages with the snap-fit ​​groove to achieve snap-fit ​​between the connecting boss and the snap-fit ​​interface.

[0007] Preferably, the snap-fit ​​protrusion is embedded with a reinforcing ring made of elastic metal and having a deformation notch.

[0008] Preferably, an anti-loosening boss is formed on the inner end face of the nut body, and a waterproof boss and a plurality of anti-loosening teeth arranged in a ring around the nut body axis are formed on the end face of the anti-loosening boss.

[0009] Preferably, the anti-loosening protrusion is arranged radially inclined relative to the nut body.

[0010] Preferably, a drainage channel is formed by a gap between the inner end of the anti-loosening protrusion and the outer side of the waterproof protrusion.

[0011] Preferably, a sealing gasket is embedded on the end face of the waterproof boss.

[0012] In summary, the beneficial effects of this utility model are as follows: after the nut body and bolt are used to fasten the object, the waterproof sleeve is snapped onto the connecting boss to cover the outer port of the nut body and the part of the bolt that passes through the nut body. This ensures that the outer port of the nut body and the part of the bolt that passes through the nut body are located in the sealed space of the waterproof sleeve, preventing rainwater from falling onto the outer end face of the nut body and invading the meshing point between the nut body and the bolt, thus causing corrosion. This achieves waterproofing on the outside of the nut body, thereby ensuring the connection strength between the nut body and the bolt, and also facilitating the disassembly of the nut body later. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional schematic diagram of the present invention; Figure 3 This is an exploded view of the present invention; Figure 4 This is a schematic diagram of the nut body in this utility model; Figure 5 This is a schematic diagram of the waterproof sleeve in this utility model.

[0015] In the diagram: 1. Nut body; 11. Connecting boss; 12. Snap-fit ​​ring groove; 13. Anti-loosening boss; 14. Waterproof boss; 15. Anti-loosening tooth; 16. Drainage channel; 2. Waterproof sleeve; 21. Snap-fit ​​interface; 22. Snap-fit ​​ring; 23. Reinforcing ring; 3. Sealing washer. Detailed Implementation

[0016] The following will refer to the appendix in the embodiments of this utility model. Figure 1-5 The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0017] As shown in the figure, a waterproof and anti-loosening nut includes a nut body 1 and a waterproof sleeve 2 made of plastic. A connecting boss 11 is formed on the outer end face of the nut body 1. One end of the waterproof sleeve 2 has an opening that forms a locking interface 21 that matches the connecting boss 11. The connecting boss 11 extends into the locking interface 21 so that the connecting boss 11 is locked in the locking interface 21, thereby covering the outer end of the nut body 1 with the waterproof sleeve 2.

[0018] Specifically, the structure of the connecting boss 11 engaging with the card interface 21 is as follows: the connecting boss 11 is a hollow cylinder and a carding ring groove 12 is formed on the circumference of the connecting boss 11. A carding protrusion 22 matching the carding ring groove 12 is formed on the inner wall of the card interface 21. The carding protrusion 22 engages with the carding ring groove 12 to achieve the engagement between the connecting boss 11 and the card interface 21.

[0019] In the above structure, when using this waterproof and anti-loosening nut with a bolt, the waterproof sleeve 2 is removed from the connecting boss 11. At this time, the nut body 1 is no different from the nut in the prior art. Existing tools such as wrenches or sockets can be used to screw the nut body 1 onto the bolt and mate it with the bolt. After tightening the nut body 1, the locking interface 21 is aligned with the connecting boss 11, so that the connecting boss 11 is inserted into the locking interface 21 and the locking protrusion 22 is locked into the locking ring groove 12. The engagement between the locking protrusion and the locking ring groove 12 limits the axial displacement of the waterproof sleeve 2 relative to the connecting boss 11, thereby achieving a fixed connection between the waterproof sleeve 2 and the connecting boss 11, and thus fixing the waterproof sleeve 2 to the outside of the nut body 1. The outer end face of the sleeve 2 covers the outer port of the nut body 1 and the part through which the bolt passes. The plastic snap-fit ​​protrusion 22 is inserted into the snap-fit ​​ring groove 12 and fits tightly with the snap-fit ​​ring groove 12 to form a sealing surface. This keeps the outer port of the nut body 1 and the part through which the bolt passes in the nut body 1 within the sealed space of the waterproof sleeve 2. This prevents rainwater from falling onto the outer end face of the nut body 1 and invading the meshing point between the nut body 1 and the bolt, causing corrosion. This achieves waterproofing on the outside of the nut body 1, thereby ensuring the connection strength between the nut body 1 and the bolt. It also facilitates the disassembly of the nut body 1 later. It should be noted that waterproof sleeves 2 with different axial lengths can be snapped on depending on the length of the bolt that passes through the nut body 1.

[0020] Furthermore, based on the above structure, the snap-fit ​​protrusion 22 is embedded with a reinforcing ring 23 made of elastic metal and having a deformation notch. During the process of snap-fit ​​protrusion 22 being snapped into snap-fit ​​ring groove 12, the reinforcing ring 23 expands and deforms through the deformation notch, allowing snap-fit ​​protrusion 22 to be snapped into snap-fit ​​ring groove 12. After snap-fit ​​protrusion 22 is snapped into snap-fit ​​ring groove 12, the reset reinforcing ring 23 tightens snap-fit ​​protrusion 22 in snap-fit ​​ring groove 12, so that snap-fit ​​protrusion 22 and snap-fit ​​ring groove 12 are tightly fitted to form a sealing surface, while also strengthening the connection between waterproof sleeve 2 and connecting protrusion.

[0021] Furthermore, based on the above structure, an anti-loosening boss 13 is formed on the inner end face of the nut body 1. A waterproof boss 14 and several anti-loosening teeth 15 arranged in a ring around the nut body 1 axis are formed on the end face of the anti-loosening boss 13. After the nut body 1 is fastened to the object with the bolt, the waterproof boss 14 and the anti-loosening teeth 15 are pressed against the surface of the object. The anti-loosening teeth 15 limit the rotation of the nut body 1, thus achieving the anti-loosening function. The waterproof boss 14 is pressed against the surface of the object, forming a sealing surface between the nut body 1 and the surface of the object, preventing rainwater from seeping into the meshing point between the nut body 1 and the bolt through the space between the inner end face of the nut body 1 and the surface of the object. This achieves the inner side method of the nut body 1, thereby ensuring the connection strength between the nut body 1 and the bolt.

[0022] Furthermore, based on the above structure, the anti-loosening protrusion 15 is radially inclined relative to the nut body 1, that is, the anti-loosening protrusion 15 is inclined in the direction of rotation of the tightened nut body 1. After the nut body 1 is tightened, the anti-loosening protrusion 15 engages with the surface of the object, thereby increasing the frictional force and strengthening the limiting effect of the anti-loosening protrusion 15 on the rotation of the nut body 1, thereby strengthening the anti-loosening performance of the nut body 1.

[0023] Furthermore, based on the above structure, a gap is formed between the inner end of the anti-loosening protrusion 15 and the outer side of the waterproof protrusion 14 to form a drainage channel 16. After rainwater enters between two adjacent anti-loosening protrusions 15, it can continue to flow in the drainage channel 16 and be discharged from the end face of the anti-loosening protrusion 13 and the surface of the object, preventing rainwater from accumulating between the anti-loosening protrusion 13 and the surface of the object and causing erosion to the nut body 1 and the surface of the object, which indirectly improves the waterproof performance of the nut body 1.

[0024] In addition, based on the above structure, a sealing washer 3 is embedded on the end face of the waterproof boss 14. Under normal conditions, the sealing washer 3 protrudes slightly from the end face of the waterproof boss 14. When the nut body 1 is tightened so that the waterproof boss 14 is pressed against the surface of the object, the sealing washer 3 is pressed between the waterproof boss and the surface of the object to form a sealing surface, thereby enhancing the waterproof performance of the inner end face of the nut body 1.

[0025] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A waterproof and anti-loosening nut, comprising a nut body (1), characterized in that: It also includes a waterproof sleeve (2) made of plastic material. A connecting boss (11) is formed on the outer end face of the nut body (1). One end of the waterproof sleeve (2) has a snap-fit ​​interface (21) that matches the connecting boss (11). The connecting boss (11) extends into the snap-fit ​​interface (21) so that the connecting boss (11) snaps into the snap-fit ​​interface (21), and the waterproof sleeve (2) covers the outer port of the nut body (1).

2. The waterproof and anti-loosening nut according to claim 1, characterized in that: The connecting boss (11) is a hollow cylinder and a snap-fit ​​groove (12) is formed on the circumference of the connecting boss (11). A snap-fit ​​protrusion (22) matching the snap-fit ​​groove (12) is formed on the inner wall of the snap-fit ​​interface (21). The snap-fit ​​protrusion (22) is snapped into the snap-fit ​​groove (12) to realize the snap-fit ​​between the connecting boss (11) and the snap-fit ​​interface (21).

3. The waterproof and anti-loosening nut according to claim 2, characterized in that: The snap-fit ​​protrusion (22) is embedded with a reinforcing ring (23) made of elastic metal and having a deformation notch.

4. The waterproof and anti-loosening nut according to claim 1, characterized in that: An anti-loosening boss (13) is formed on the inner end face of the nut body (1), and a waterproof boss (14) and a number of anti-loosening teeth (15) arranged in a ring around the nut body (1) on the end face of the anti-loosening boss (13).

5. The waterproof and anti-loosening nut according to claim 4, characterized in that: The anti-loosening protrusion (15) is radially inclined relative to the nut body (1).

6. The waterproof and anti-loosening nut according to claim 5, characterized in that: The inner end of the anti-loosening protrusion (15) and the outer side of the waterproof protrusion (14) have a gap to form a drainage channel (16).

7. The waterproof and anti-loosening nut according to claim 6, characterized in that: A sealing gasket (3) is embedded on the end face of the waterproof boss (14).

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