CN210769785U - Anti-loose bolt - Google Patents

Abstract

The utility model relates to the field of bolts, and discloses an anti-loosening bolt, which comprises a nut, a spring sleeve, an anti-loosening spring, an anti-loosening washer, a bottom washer and a threaded column. The nut is fixed on the upper end of the threaded column. The spring sleeve is fixed on the lower end of the nut, and the anti-loosening spring, the anti-loosening washer and the bottom washer are sequentially arranged on the threaded column, and the inner diameter is larger than the outer diameter of the threaded column. The double anti-loosening design can effectively prevent loosening, the anti-loosening effect is obvious, and the operation and installation are simple.

Description

lock bolt

technical field

The utility model relates to a bolt, in particular to an anti-loosening bolt.

Background technique

Bolt parts are used to fasten and connect two parts with through holes. They are widely used in production and life, and have become an indispensable part in industrial production. However, after the bolts are tightened to the components, they are prone to loosening due to the movement of the components, especially for high-speed running vehicles, machinery and equipment that are constantly running, etc., during long-term machine operation, different degrees of vibration will occur, and the vibration makes the bolts very easy to occur. Loose or even fall off. If the fastening bolts of the running machinery and equipment are loose and fall off, it is likely to affect the safety of personnel and cause great property damage. There are many types of anti-loosening bolts in the existing bolt types. Although the simpler anti-loosening bolts have a certain effect, they cannot completely eliminate the problem of bolt loosening. Professional personnel are required to operate, which is not conducive to promotion and use.

Utility model content

The technical problem solved by the utility model is to provide an anti-loosening bolt.

The technical scheme adopted by the utility model to solve the technical problem is as follows: an anti-loosening bolt, which includes a nut, a spring sleeve, an anti-loosening spring, an anti-loosening washer, a bottom washer and a threaded column, and the nut is fixed on the threaded column. The upper end of the spring sleeve is fixed on the lower end of the nut, and the anti-loosening spring, the anti-loosening washer and the bottom washer are sequentially arranged on the threaded column and the inner diameter is larger than the outer diameter of the threaded column. The double anti-loosening design can effectively prevent loosening, the anti-loosening effect is obvious, and the operation and installation are simple.

Further: the outer diameter of the spring sleeve, the lock washer and the bottom washer is equal to the diameter of the inscribed circle of the nut, the inner diameter of the spring sleeve is larger than the outer diameter of the lock spring, the lock washer and the bottom The inner diameter of the washer is less than half of the sum of the inner diameter and outer diameter of the lock spring. Beautiful design, both the spring sleeve and lock washer can restrain the lock spring, and the spring sleeve, lock washer and bottom washer can cooperate effectively.

Further: the depth of the spring sleeve is greater than the minimum length of the anti-loosening spring after effective compression, and the depth of the spring sleeve is less than half of the sum of the minimum length of the anti-loosening spring after effective compression and the length when no force is applied . That is, the anti-loosening spring can be used effectively, and the compression distance of the anti-loosening spring can also be prevented from exceeding the effective value, so that the damage of the anti-loosening spring cannot be recovered.

Further, the upper and lower surfaces of the anti-loose washer are evenly provided with metal protruding teeth. Increases friction with the bottom washer, preventing rotation.

Further, the metal protruding teeth are evenly arranged in a circle, and the inner diameter is larger than the outer diameter of the anti-loosening spring. The metal protrusions do not contact the anti-loosening spring and cause no damage to the anti-loosening spring.

Further, the lower surface of the bottom gasket is a smooth plane. Protect the surface of the connected parts from being scratched and disperse the pressure on the connected parts.

Further, the corners of the upper and lower surfaces of the nut are respectively provided with an upper transition fillet and a lower transition fillet, and the surrounding surface of the nut is also provided with a surrounding surface transition fillet. It is safer and more beautiful to remove sharp corners.

Description of drawings

1 is a horizontal front view of the utility model;

Figure 2 is a vertical front view of the utility model.

Marked in the figure: nut 100, upper transition fillet 101, lower transition fillet 102, surrounding surface transition fillet 103, spring sleeve 200, anti-loosening spring 300, anti-loosening washer 400, metal lobes 401, bottom washer 500 , threaded column 600.

Detailed ways

The present utility model will be further described below with reference to the accompanying drawings and specific embodiments.

A locking bolt as shown in FIG. 1 and FIG. 2 includes a nut 100, a spring sleeve 200, a locking spring 300, a locking washer 400, a bottom washer 500 and a threaded post 600. The nut 100 is fixed on the The upper end of the threaded post 600, the spring sleeve 200 is fixed on the lower end of the nut 100, the anti-loosening spring 300, the anti-loosening washer 400, and the bottom washer 500 are sequentially arranged on the threaded post 600 and the inner diameter is larger than that on the threaded post 600 the outer diameter. After the anti-loosening bolt is tightened, the anti-loosening spring 300 in the spring sleeve 200 generates elastic force in the opposite direction to the nut 100 at both ends of the spring sleeve 200 and the anti-loosening washer 400, resulting in the anti-loosening effect; The two surfaces are respectively contacted with the spring sleeve 200 and the bottom washer 500 to increase the friction force and play the anti-loosening effect. The double anti-loosening design can effectively play the anti-loosening effect. The anti-loosening effect is obvious and the installation is very simple. Conventional bolt tightening tools are sufficient.

On the basis of the above, as shown in FIGS. 1 and 2 , the outer diameters of the spring sleeve 200 , the locking washer 400 and the bottom washer 500 are equal to the diameter of the inscribed circle of the nut 100 , and the The inner diameter is larger than the outer diameter of the locking spring 300 , and the inner diameters of the locking washer 400 and the bottom washer 500 are smaller than half of the sum of the inner diameter and the outer diameter of the locking spring 300 . The anti-loose spring 300, the anti-loose washer 400, and the bottom washer 500 can all move on the threaded column 600. According to the order and size of the arrangement, the anti-loose spring 300 can only move between the spring sleeve 200 and the anti-loose washer 400. The spring sleeve The barrel 200 is disposed in the space between the spring sleeve 200 and the threaded post 600 . The design is beautiful. Both the spring sleeve 200 and the anti-loose washer 400 can restrain the anti-loose spring 300, and the spring sleeve 200, the anti-loose washer 400 and the bottom washer 500 can cooperate effectively.

On the basis of the above, as shown in FIGS. 1 and 2 , the depth of the spring sleeve 200 is greater than the minimum length after the effective compression of the anti-loosening spring 300 , and the depth of the spring sleeve 200 is smaller than the effective compression of the anti-loosening spring 300 . One-half of the sum of the minimum length and the unstressed length. That is, the anti-loosening spring 300 can be used effectively, and the compression distance of the anti-loosening spring 300 can also be prevented from exceeding an effective value, so that the damage of the anti-loosening spring 300 cannot be recovered. After tightening, the anti-loose washer 400 is pressed against the lower port of the spring sleeve 200, and the anti-loose spring 300 is compressed in the cavity formed by the nut 100, the spring sleeve 200 and the anti-loose washer 400. 400 produces the opposite spring force. The anti-loosening spring 300 is protected in the spring sleeve 200 , and the anti-loosening spring 300 will not be damaged due to over-tightening beyond the effective compression range of the anti-loosening spring 300 .

On the basis of the above, as shown in FIG. 1 and FIG. 2 , the upper and lower surfaces of the anti-loose washer 400 are uniformly provided with metal protrusions 401 . Increase friction with bottom washer 500, preventing rotation.

On the basis of the above, as shown in FIG. 2 , the metal protruding teeth 401 are evenly arranged in a circle, and the inner diameter is larger than the outer diameter of the anti-loosening spring 300 . The metal protruding teeth 401 are not in contact with the anti-loosening spring 300 and do not cause damage to the anti-loosening spring 300 .

On the basis of the above, as shown in FIG. 1 , the lower surface of the bottom gasket 500 is a smooth plane. Protect the surface of the connected parts from being scratched and disperse the pressure on the connected parts.

On the basis of the above, as shown in FIG. 1 and FIG. 2 , the corners of the upper and lower surfaces of the nut 100 are respectively provided with an upper transition fillet 101 and a lower transition fillet 102 . There are also transition fillets 103 on the surrounding surface. It is safer and more beautiful to remove sharp corners.

The specific embodiments described above further describe the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above are only specific embodiments of the present invention, and are not intended to limit the present invention. In the utility model, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims (7)

1. A locking bolt, characterized in that: comprising a nut (100), a spring sleeve (200), a locking spring (300), a locking washer (400), a bottom washer (500) and a threaded post (600) ), the nut (100) is fixed on the upper end of the threaded column (600), the spring sleeve (200) is fixed on the lower end of the nut (100), the anti-loosening spring (300), the anti-loosening washer ( 400) and the bottom washer (500) are sequentially arranged on the threaded post (600), and the inner diameter is larger than the outer diameter of the threaded post (600). 2. The anti-loosening bolt according to claim 1, wherein the outer diameter of the spring sleeve (200), the anti-loosening washer (400) and the bottom washer (500) is equal to the diameter of the nut (100). The diameter of the inscribed circle, the inner diameter of the spring sleeve (200) is larger than the outer diameter of the locking spring (300), and the inner diameters of the locking washer (400) and the bottom washer (500) are smaller than the inner diameter of the locking spring (300) 1/2 of the sum of the outer diameter. 3. An anti-loosening bolt according to claim 2, characterized in that: the depth of the spring sleeve (200) is greater than the minimum length after the effective compression of the anti-loosening spring (300), and the length of the spring sleeve (200) The depth is less than half of the sum of the minimum length after effective compression of the anti-loosening spring (300) and the length when no force is applied. 4. The anti-loosening bolt according to claim 1, wherein the upper and lower surfaces of the anti-loosening washer (400) are uniformly provided with metal protruding teeth (401). 5 . The anti-loosening bolt according to claim 4 , wherein the metal lobes ( 401 ) are uniformly arranged in a circle, and the inner diameter is larger than the outer diameter of the anti-loosening spring ( 300 ). 6 . 6. The anti-loosening bolt according to claim 1, wherein the lower surface of the bottom washer (500) is a smooth plane. 7 . The anti-loosening bolt according to claim 1 , wherein the corners of the upper and lower surfaces of the nut (100) are respectively provided with an upper transition fillet (101) and a lower transition fillet ( 7 . 102), the surrounding surface of the nut (100) is also provided with a surrounding surface transition fillet (103).

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