Novel sealing bolt

Abstract

The utility model relates to a novel sealing bolt, which comprises a screw cap and a screw rod, and is characterized in that a boss is arranged at the root of the screw rod, the cross section of the boss is larger than that of the screw rod, the boss is designed at the root of the screw rod, and a small step is formed between the boss and the root of the screw rod. The structure has the advantages that a special placing position is designed for the sealing ring, the sealing ring is tightly attached to the bolt, the sealing effect is very good, the sealing effect is greatly better than the effect of overlapping a common sealing gasket, and the anti-loosening effect is achieved. A non-return groove is further designed in the side wall of the boss, a special anti-loose gasket of a special structure is matched, the bolt and the gasket can be well prevented from loosening, and compared with the prior art, the anti-loose bolt is simple and novel in structure, easy, convenient and rapid to operate, good in locking and anti-loose effect and very outstanding in practicability.

Description

Technical Field

[0001] This utility model relates to fastener technology, specifically a new type of sealing bolt. Background Technology

[0002] Threaded structures are a common type of connector and fastener. With the continuous development of technology, threaded connections are no longer limited to connection and fixation; in some applications, they also need to provide sealing and anti-loosening effects. To address this, existing technologies have adopted various forms, such as adding a dedicated self-locking structure for nuts, adding retaining rings and pins, and the applicant's patent application "202423086329.2, A Mechanical Anti-Loosening Device," etc. Various manufacturers have employed different structural forms to solve this problem. Utility Model Content

[0003] The purpose of this invention is to provide a novel sealing bolt with a novel structure and convenient use.

[0004] The technical solution of this utility model is: a new type of sealing bolt, including a nut and a screw, characterized in that a boss is provided at the root of the screw, and the cross-section of the boss is larger than the cross-section of the screw.

[0005] A further preferred embodiment is that a plurality of check grooves are provided on the side wall of the boss, and an anti-loosening washer matching the sealing bolt is also provided. The back of the anti-loosening washer is provided with a plurality of one-way toothed check protrusions, and the inner edge of the front of the anti-loosening washer is provided with a plurality of check teeth protruding from the washer surface. The check teeth are inclined from bottom to top toward the inner axis, and the check teeth correspond to the check grooves on the side wall of the boss.

[0006] A further preferred embodiment is that a sealing ring is provided on the lower surface of the boss, and the sealing ring is tightly fitted with the root of the screw.

[0007] This invention is a specially designed and improved bolt that combines sealing and anti-loosening functions. A boss is designed at the root of the bolt, located between the nut and the threaded bolt. The cross-section of the boss is larger than that of the bolt, meaning the lower edge of the boss protrudes beyond the outer wall of the threaded bolt. A small step is formed between the boss and the bolt root. In applications requiring sealing, a sealing ring can be installed at this step, tightly fitting against the bolt root. The advantage of this structure is that it provides a dedicated placement for the sealing ring, ensuring a tight fit between the ring and the bolt, resulting in a superior sealing effect compared to stacking ordinary sealing washers. Furthermore, to address the anti-loosening issue, a check groove is designed on the side wall of the boss, along with a specially structured anti-loosening washer. In applications, the back of the anti-loosening washer fits tightly against the surface of the fixed object, and the check teeth on the front of the washer engage with the check groove on the side wall of the boss, effectively preventing the bolt and washer from loosening.

[0008] Compared with existing technologies, this utility model has a simple and novel structure, is easy and quick to operate, has a good locking and anti-loosening effect, and is highly practical.

[0009] The present invention will now be explained in detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model.

[0011] Figure 2 yes Figure 1 Enlarged schematic diagram of the partial structure of the BB cross-section.

[0012] Figure 3 This is another structural schematic diagram of the present invention.

[0013] Figure 4 This is a schematic diagram of the structure of an anti-loosening gasket in this utility model.

[0014] Figure 5 yes Figure 4 The C-direction view.

[0015] Figure 6 This is a schematic diagram of one application scenario of this utility model.

[0016] Figure 7 yes Figure 6 A magnified schematic diagram of a local structure.

[0017] Explanation of reference numerals in the attached figures:

[0018] 1. Substrate, 2. Fixture

[0019] 3 sealing bolts, 301 nuts, 302 threaded rods, 303 check grooves, 304 bosses.

[0020] 4 anti-loosening washers, 401 washer front, 402 washer back, 403 check valve protrusion, 404 check valve teeth.

[0021] 5. Sealing rings. Detailed Implementation

[0022] Example 1, see Figure 1 , Figure 2 A sealing bolt 3 has a boss 304 at the root of the screw 302. The cross-section of the boss 304 is larger than the cross-section of the screw 302, that is, the diameter of the boss 304 is larger than the diameter of the screw 302. The lower surface of the boss 304 protrudes from the screw 302. A sealing ring 5 is provided on the lower surface of the boss 304. During installation, the sealing ring 5 is tightly fitted with the threaded part at the root of the screw 302.

[0023] Example 2, see Figure 3 The structure in this example is basically the same as in Example 1, except that several check grooves 303 are provided on the side wall of the boss 304 at the root of the screw 302 of the sealing bolt 3, and a matching special anti-loosening washer 4 is also provided. See [link to example]. Figure 4 , Figure 5 The anti-loosening gasket 4 has several one-way toothed anti-return protrusions 403 on the back side 402 of the gasket, and several anti-return pressure teeth 404 protruding from the gasket surface are provided at the inner circle edge of the front side 401 of the anti-loosening gasket 4. The anti-return pressure teeth 404 are inclined from bottom to top towards the inner circle axis, and the anti-return pressure teeth 404 correspond to the anti-return grooves 303 on the side wall of the boss 304.

[0024] For usage instructions, please refer to [link / reference]. Figure 6 , Figure 7 As shown, after the sealing bolt 3 passes through the fixing object 2, it is threadedly connected to the base material 1. When the sealing bolt 3 is tightened, the anti-loosening gasket 403 on the back side 402 of the gasket 4 gradually and tightly engages with the panel of the fixing object 2, so that the anti-loosening gasket 4 cannot rotate and slide in the opposite direction. The nut 301 gradually approaches the front side 401 of the gasket. As the pressure of the nut 301 increases, the upwardly inclined anti-loosening teeth 404 are gradually flattened by the nut 301. The anti-loosening teeth 404 are pressed inward (towards the boss 304) until one of its protrusions slides into a certain anti-loosening groove 303 on the boss 304 and locks in place, thereby preventing the sealing bolt 3 from loosening in the opposite direction and achieving the effect of preventing loosening and detachment (this technical structure adopts the relevant technical solution in the applicant's patent application "202423086329.2, a mechanical anti-loosening device", which will not be described in detail). After installation, the sealing ring 5 on the lower surface of the boss 304 not only fits tightly with the thread at the root of the screw 302, but also fits tightly with the edge of the fixing object 2, achieving anti-loosening, anti-detachment, and sealing in one step. It is simple to operate and has high work efficiency.

[0025] The sealing bolts in this technical solution are not limited to the flat-head bolts in the above examples, but also include commonly used pointed bolts.

[0026] The sealing bolt of this technical solution is suitable for both bolt and nut applications and blind hole fixing without nuts in substrate applications. It has a good locking and anti-loosening sealing effect and is very practical.

[0027] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary technical means in the art that are not disclosed in this application.

Claims

1. A novel sealing bolt, comprising a nut and a shank, characterized in that, A boss is provided at the root of the screw, and the cross-section of the boss is larger than the cross-section of the screw. Several check grooves are provided on the side wall of the boss at the root of the screw, and an anti-loosening washer matching the sealing bolt is also provided. Several one-way toothed check protrusions are provided on the back of the anti-loosening washer, and several check teeth protruding from the washer surface are provided on the inner circle edge of the front of the anti-loosening washer. The check teeth are inclined from bottom to top towards the inner circle axis, and the check teeth correspond to the check grooves on the side wall of the boss.

2. The novel sealing bolt according to claim 1, characterized in that, A sealing ring is provided on the lower surface of the boss, and the sealing ring is tightly fitted with the root of the screw.

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