Single-ring torsion controlled and sealed fuel tank cap for automobile

Abstract

The invention discloses a single-ring torsion controlled and sealed fuel tank cap for an automobile. The single-ring torsion controlled and sealed fuel tank cap comprises a valve body and a handle; the lower end of the handle is movably connected with the upper end of the valve body; the valve body is provided with a circle of valve body sawteeth; the lower end face of the handle is provided with a handle pipeline which is provided with a circle of handle sawteeth; a circle of ratchet wheel is arranged between the handle sawteeth and the valve body sawteeth; the outer circumference of the ratchet wheel is provided with outer ring suspension arms; the inner circumference of the ratchet wheel is provided with inner ring suspension arms; the outer ring suspension arms and the inner ring suspension arms have elasticity; the inner ring suspension arms can rotate relative to the handle sawteeth; the outer ring suspension arms can rotate relative to the valve body sawteeth; the outer circumference of the valve body sawteeth is provided with valve body limit blocks; handle limit blocks can be rotated between adjacent valve body limit blocks to ensure that the outer ring suspension arms and the valve body sawteeth generate a force making the sawteeth do relative rotation, and the force rightly acts on the handle limit blocks to ensure that the handle limit blocks rotate between two valve body limit blocks; and a torsional spring is fixedly arranged between the valve body and the handle. The single-ring torsion controlled and sealed fuel tank cap only rings once, and the handle can be rebounded to ensure that a product is arranged in place.

Description

technical field [0001] The invention relates to a fuel tank cap for automobiles, in particular to a fuel tank cap for automobiles with single-click torque control and sealing. Background technique [0002] An invention patent announced in China on 2011-05-04, the title of the invention is "a sealed fuel tank cover", its announcement number is 201816449U, and its patent number is ZL201020296996.2, which discloses a sealed fuel tank cover, the The fuel tank cap includes an oil cap shell, a bottom seal and a fixed cap. The oil cap shell is fixed with a screw thread that matches the fuel tank port. The center of the oil cap shell is provided with a bottom cover connecting hole, and the center of the bottom cover is provided with a fixed column, and the fixed column is provided with an internal thread. , the fixed cap is provided with an external thread that matches the fixed column, and the bottom cover is connected to the bottom of the oil cover shell. There is a ratchet, and ...

AI Technical Summary

Problems solved by technology

[0003] The fuel tank cap adopts a simple pawl and ratchet ring gear structure to remind the operator that the fuel tank cap has been tightened. When the rotation torque reaches a certain level, there will be several continuous sounds to remind the user that the fuel tank cap assembly is tightened. It has been installed in place. In actual operation, in order to ensure that the fuel tank cap is sufficiently sealed, the operator usually rotates it several times, which reduces the convenience of operation; in addition, because in the fuel tank cap, the sound is the user confirming that the operation is completed The only basis for this is that if the user is in an external noise environment, the user will not receive a clear prompt sound

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