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Single-face connecting bolt

A technology for connecting bolts and one side, which is applied to rivets and other directions, can solve the problems of large installation torque and low connection strength, and achieve the effect of small installation torque, high connection strength and improved strength

Pending Publication Date: 2022-04-15
成都成维精密机械制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the technical problems of large installation torque and low connection strength of the existing single-sided connecting bolts; the invention provides a single-sided connecting bolt, which can reduce the installation torque and improve the connection strength

Method used

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Examples

Experimental program
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Effect test

Embodiment

[0035] combined with figure 1 and Figure 4 , this embodiment provides a single-sided connecting bolt, including a nail sleeve 1, a core rod 2 and an extrusion nut 3; the extrusion nut 3 includes a first cylindrical section 31 and a cone section 32 connected in sequence, The outer diameter of a cylindrical section 31 is greater than the inner diameter of the nail sleeve 1, and the end of the cone section 32 away from the first cylindrical section 31 is inserted in the nail sleeve 1; one end of the core rod 2 is movably inserted in the The nail sleeve 1 is screwed to the extrusion nut 3 , and the extrusion nut 3 is driven to move to the other end of the core rod 2 by rotating the core rod 2 .

[0036] continue to combine figure 1 Specifically, the nail sleeve 1 is integrally formed in the shape of a countersunk screw, so as to prevent the outer end of the screw sleeve from protruding from the aircraft body and affecting the aerodynamic fluidity of the aircraft shape.

[0037...

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Abstract

The invention discloses a single-face connecting bolt, and relates to the technical field of fasteners. According to the technical scheme, the single-face connecting bolt comprises a nail sleeve, a core rod and an extrusion nut. The extrusion nut comprises a first cylindrical section and a conical section which are connected in sequence, the outer diameter of the first cylindrical section is larger than the inner diameter of the rivet sleeve, and the end, away from the first cylindrical section, of the conical section is inserted into the rivet sleeve; one end of the core rod is movably inserted into the rivet sleeve and is in threaded connection with the extrusion nut, and the extrusion nut is driven to move towards the other end of the core rod by rotating the core rod. According to the single-face connecting bolt, under the action of friction force of the conical section and the nail sleeve and screwing force of the thread pair, the nut is extruded to be screwed into the thread ending end of the core rod step by step, so that the end of the nail sleeve is gradually swelled and deformed, fastening is achieved through small torque and slow deformation, cracks caused by swelling cannot be caused, and the service life of the single-face connecting bolt is prolonged. The connecting structure has the characteristics of small mounting torque and high connecting strength.

Description

technical field [0001] The invention relates to the technical field of fasteners, in particular to a single-sided connecting bolt. Background technique [0002] In view of the compactness of the internal structure of the aircraft and the variety of shapes of the connecting parts, as well as the requirements of the aerodynamic fluidity of the shape, the opening and accessibility of some bolted joints on the aircraft are severely restricted, and traditional bolts and nuts cannot be used. fit and use tools from both sides for installation or assembly. Therefore, in the manufacturing and assembly process of modern aircraft, a large number of new single-sided connecting bolts are required, and there are extremely high requirements for the strength and comprehensive mechanical properties of the connection. [0003] The existing single-sided connecting bolts are mainly installed in two ways: drawing and torsion. The installation torque of the traditional drawing-installed single-s...

Claims

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Application Information

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IPC IPC(8): F16B19/10
Inventor 李涛刘臣勇
Owner 成都成维精密机械制造有限公司
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