CN206668718U - Automobile exhaust pipe flange bolt - Google Patents

Abstract

The utility model relates to a special automobile exhaust pipe flange bolt, in particular to an automobile exhaust pipe flange bolt. The screw rod and the hexagonal flange are integrally arranged, the anti-loosening toothed washer is set on the screw rod, and the anti-loosening toothed washer is provided with a sleeve hole, the diameter of the sleeve hole is smaller than the diameter of the hexagonal flange, and the overall diameter is larger than that of the hexagonal flange diameter, with anti-loosening teeth on the outer edge of the anti-loosening tooth washer. When the above structure is in use, the anti-loosening tooth washer will be squeezed during the tightening process of the bolt. When it is rotated clockwise, the resistance of the anti-loosening tooth is small and the anti-loosening tooth can rotate smoothly. After tightening, the anti-loosening tooth contacts the surface of the mounting surface. , when the reverse force occurs, due to the bending direction of the anti-loosening teeth, it can effectively prevent the rotation of the hexagonal flange bolts, and use the elastic pressure to prevent the bolts from reversing at the same time. Due to the bending of the anti-loosening teeth, a three-dimensional Components, anti-loosening teeth provide elastic pressure, so the loosening of bolts can be reduced to make the bolts tighter, and the anti-seismic loosening effect is very good.

Description

Automobile exhaust pipe flange bolts

technical field

The utility model relates to a special automobile exhaust pipe flange bolt, in particular to an automobile exhaust pipe flange bolt.

Background technique

In terms of the role of the automobile exhaust pipe on the automobile body, it plays the role of shock absorption and noise reduction, and prolongs the life of the exhaust muffler system. The main material of the exhaust pipe is stainless steel. For ordinary cars, because the exhaust gas of the car is under great pressure when it leaves the engine, the noise it produces may make people feel crazy. At this time, the main role of noise reduction is the exhaust pipe of the car. The device greatly reduces the noise of the car. And its main working principle is to divert the airflow through multiple channels. These diversions only see friction and collision with each other to make the flow velocity of the airflow gradually decrease. This repeated cycle finally makes the exhaust gas flow out through the exhaust pipe of the car, reducing the noise, so as to achieve daily maintenance. The effect of reducing the noise of the car. At present, ordinary bolts are used to fix the exhaust pipe. When fixing, vibration will occur due to vibration, causing the bolts to loosen or fall off.

Utility model content

The purpose of the utility model is to provide a kind of automobile exhaust pipe flange bolt which is firmly fixed and not easy to loosen.

The technical solution adopted by the utility model to solve the technical problem is: a flange bolt for an automobile exhaust pipe, which is characterized in that it includes a hexagonal flange, a screw, and an anti-loosening tooth washer, and the screw and the hexagonal flange are integrated. The anti-loosening tooth-shaped washer is set on the screw rod, and the anti-loosening tooth-shaped washer is provided with a sleeve hole. The diameter of the hole is smaller than the diameter of the hexagonal flange, and the overall diameter is larger than the diameter of the hexagonal flange. Anti-loosening teeth are provided on the outer edge.

The utility model is further configured as follows: protruding square teeth are provided on the periphery of the anti-loosening toothed washer, gaps are left between the square teeth, and the square teeth are bent diagonally toward the screw rod to form anti-loosening teeth.

The further setting of the utility model is: the bending angle is 30 degrees, and it is bent clockwise.

When the above structure is in use, the anti-reverse flange will be squeezed during the tightening process of the bolts. When rotating clockwise, the resistance of the anti-loosening teeth is small and can rotate smoothly. When tightening, only the anti-loosening teeth and the surface of the mounting surface Contact, when the reverse force occurs, due to the bending direction of the anti-loosening teeth, it can effectively prevent the rotation of the anti-loosening tooth washer, use the effect of pressure, and at the same time prevent the bolt from reversing, due to the bending of the anti-loosening teeth to form a Three-dimensional parts, anti-loosening teeth provide elastic pressure, so it can be fixed more firmly, and the anti-seismic effect is very good.

Description of drawings

Fig. 1 is the structural representation of present embodiment;

Fig. 2 is a schematic structural view of the anti-loosening tooth washer of this embodiment.

detailed description

Referring to Fig. 1 and Fig. 2, it can be known that a flange bolt of an automobile exhaust pipe according to the utility model comprises a hexagonal flange 1, a screw rod 2, and an anti-loosening tooth-shaped washer 3, and the screw rod 2 and the hexagonal flange 1 are integrally arranged. The above-mentioned anti-loosening toothed washer 3 is set on the screw rod 2, and the anti-loosening toothed washer 3 is provided with a sleeve hole. The outer edge of the toothed washer 3 is provided with anti-loosening teeth 31, and the outer periphery of the anti-loosening toothed washer 3 is provided with raised square teeth. There are gaps between the square teeth, and the square teeth are directed toward the screw rod 2 diagonally. Bending to form the anti-loosening teeth 31, the bending angle is 30 degrees, and it is bent clockwise.

Apparently, the above-mentioned embodiments are only examples for the purpose of clear description, rather than limiting the implementation. For those skilled in the art, other changes or changes in different forms can be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. And the obvious changes or changes derived therefrom are still within the protection scope of the present utility model.

Claims (3)

1. A kind of 1. automobile exhaust pipe flange bolt, it is characterised in that：Including hexagonal flange disk, screw rod, locking flute profile packing ring, screw rod It is wholely set with hexagonal flange disk, described locking flute profile packing ring is enclosed on screw rod, and locking flute profile packing ring is provided with sets of holes, sets of holes Diameter is less than hexagonal flange disk diameter, and integral diameter is more than hexagonal flange disk diameter, is provided with the outer rim of locking flute profile packing ring Locking teeth.
2. 2. according to the automobile exhaust pipe flange bolt described in claim 1, it is characterised in that：Set in the periphery of locking flute profile packing ring There is the square shaped teeth of projection, gap is left between square shaped teeth, square shaped teeth is bent according to diagonal to screw rod direction, forms locking teeth.
3. 3. according to the automobile exhaust pipe flange bolt described in claim 2, it is characterised in that：The angle of described bending is 30 Degree, and bend clockwise.