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Nut and bolt locking method and locking gasket thereof

A technology of anti-loosening washers and bolts, which is applied in the direction of nuts, bolts, washers, etc., can solve the problems of hydrogen embrittlement fracture of spring washers, opening ring expansion, uneven pressure, etc.

Pending Publication Date: 2019-09-06
杨富云
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Now people often use spring washers to lock nuts and bolts. Spring washers, generally stainless steel and carbon steel unclosed spiral washers, are under the nut and above the fastener to increase the friction between the nut and the bolt. It is used to prevent the nut from loosening and to prevent vibration and loosening. However, due to a radial external tension, the external tension is derived from the tightening axial force generated by the tightening torque, and the phenomenon of ring expansion occurs, and hydrogen embrittlement of the spring washer often occurs. Fracture, the nut exerts uneven pressure on the fastened part A through the spring washer, and the friction coefficient between the spring washer, the nut and the fastened part A is very small, and vibration, rotation and relaxation occur

Method used

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  • Nut and bolt locking method and locking gasket thereof
  • Nut and bolt locking method and locking gasket thereof
  • Nut and bolt locking method and locking gasket thereof

Examples

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Embodiment Construction

[0026] The locking method of the nut and the bolt of the present invention is to replace the commonly used spring washer with the rubber washer 2, and the flat washer is omitted.

[0027] figure 1 Among them, the present invention includes a bolt 1, a nut 4, a lock washer 2, and the bolt 1 passes through the screw hole 10 of the fastened part A 5 and the fastened part B 6, and will expose the fastened part 5 and be fastened Put the rubber washer 2 on the bolt outer thread 7 of the screw rod 11 of the bolt 1 behind the part 6, screw on the nut inner thread 9 of the nut 4, and tighten it, because the rubber washer 2 of the anti-loosening washer 2 is extruded. The expansion force of the spring back is extruded, so that the bolt 1, the rubber washer 2, the nut 4, and the fastener A 5 are elastically fixed into one body through the extruded and deformed rubber washer 2. At this time, the gap between the four , the inner edge of the extruded rubber washer 2 fills the gap 12 between...

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Abstract

The invention discloses a nut and bolt locking method and a locking gasket thereof. The nut and bolt locking method is characterized in that a rubber gasket (2) is arranged around a bolt external thread (7) between a nut (4) and a fastened part A (5); the nut (4) is tightened to extrude the rubber gasket (2) for deformation filling in gaps among the nut (4), the fastened part A (5), a bolt (1) andthe rubber gasket (2); through extrusion of rebound expansion force after extrusion of the rubber gasket (2), the friction force among the four is increased for elastic fixation as a whole, so that the nut (4) cannot generate the reversing looseness phenomenon; and the bolt (1), the fastened part A (5) and the nut (4) are locked to achieve the locking purpose. The locking gasket (2) is a soft O-shaped rubber gasket (2) with elasticity; and the section of the locking gasket (2) is one of the combinations of a T shape of two ellipses, circles, ellipses, rectangles, a circle+a rectangle, an ellipse+a rectangle, and a T shape of two rectangles.

Description

technical field [0001] The invention relates to fasteners, in particular to a method for locking nuts and bolts and an anti-loosening washer thereof. Background technique [0002] Now people often use spring washers to lock nuts and bolts. Spring washers, generally stainless steel and carbon steel unclosed spiral washers, are under the nut and above the fastener to increase the friction between the nut and the bolt. It is used to prevent the nut from loosening and to prevent vibration and loosening. However, due to a radial external tension, the external tension is derived from the tightening axial force generated by the tightening torque, and the phenomenon of ring expansion occurs, and hydrogen embrittlement of the spring washer often occurs. If the nut is broken, the nut exerts uneven pressure on the fastened part A through the spring washer, and the friction coefficient between the spring washer, the nut and the fastened part A is very small, and vibration, rotation and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16B39/26F16B43/00
CPCF16B39/26F16B43/00
Inventor 杨富云
Owner 杨富云
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