CN103291719A

CN103291719A - Self-plugging rivet

Info

Publication number: CN103291719A
Application number: CN2013102555537A
Authority: CN
Inventors: 刘如刚; 王善林; 谢丹贤; 蒲国新; 白玉康
Original assignee: Guizhou Aerospace Precision Products Co Ltd
Current assignee: Guizhou Aerospace Precision Products Co Ltd
Priority date: 2013-06-25
Filing date: 2013-06-25
Publication date: 2013-09-11
Anticipated expiration: 2033-06-25
Also published as: CN103291719B

Abstract

The invention relates to a self-plugging rivet. The rivet comprises a rivet body, a core bar, a drive nut, a pipe body and a ring. The rivet body is located between the pipe body and the drive nut, the rivet body is in threaded connection with the core bar, the bar diameter of the core bar is full thread, one end of the core bar is of a T-shaped cylinder structure, a twisting-off groove is formed in the middle of the core bar, two sections of major diameters at two ends of the twisting-off groove are not uniform, the major diameter of the end close to the head portion is larger than the major diameter of the end close to the tail portion, the pipe body is of a fully-hollow stepped hole cylindrical structure, the pipe body is in clearance fit with the core bar and is sleeved on the core bar, the ring is of a fully-hollow cylinder structure, the ring is in clearance fit with the pipe body and is clamped into the corresponding position of the pipe body, one end, matched with the pipe body, of the rivet body is in an external cone shape, the other end, matched with the drive nut, of the rivet body is in an internal cone shape, the whole rivet body is of a fully-hollow internal thread structure, the drive nut is of a hexagon internal thread structure and is in threaded connection with the core bar, the internal major diameter of the drive nut is equal to the major diameter of the tail end of the core bar, and the end, matched with the rivet body, of the drive nut is also of a cone structure.

Description

A kind of self-plugging rivet

Technical field

The invention belongs to field of machining, particularly a kind of self-plugging rivet.

Background technique

It is 1mm only that traditional self-plugging rivet is suitable for the interlayer scope, and core bar fracture size and matrix tolerance range are at 0～2.6 ㎜ after installation, and the need core bar fracture of polishing make it smooth after installation, so inefficiency.If when installing for small space, because core bar fracture dimensional range is big, cause situations such as riveting in installation process, often occur breaking end, crossing; In bruting process the nail surface is also caused damage easily in addition, the nail body is threaded with core bar occurs becoming flexible, installation quality is difficult to control.

Summary of the invention

For overcoming above-mentioned defective, the technical problem to be solved in the present invention provides a kind of easy to operate and the fracture size is little, the self-plugging rivet of the core bar fracture of need not polishing.

A kind of self-plugging rivet, this rivet comprise nail body, core bar, drive nut, body, ring; The nail body is positioned between body and the drive nut, and nail body and core bar are for being threaded; The core bar bar directly is Full Thread FT, and the one end is T shape round column structure, is provided with at the middle part of core bar and twists into two parts groove, and it is inconsistent to twist into two parts the two sections Major Diams in groove two ends, leans on the head end Major Diam greater than leaning on the tail end Major Diam; Body is complete hollow step hole cylindrical structural, with core bar be Spielpassung, be set in core bar; Ring is full hollow cylinder structure, with body be Spielpassung, be installed in the relevant position of body; The end that the nail body matches with body is external conical shape, and another end that matches with drive nut is inner conical, and whole nail body is complete hollow female thread structure; Drive nut is the hexagonal female thread structure, with core bar for being threaded, the big footpath of drive nut internal thread size is consistent with core bar tail end Major Diam; The end that drive nut matches with the nail body also is cone structure.

Self-plugging rivet of the present invention has the intensity height, rivets characteristics such as connection is reliable, easy to operate, installation efficiency height.

Description of drawings

Fig. 1 is the mounting structure schematic representation of self-plugging rivet of the present invention.

Embodiment

Use a large amount of self-plugging rivet at clamp connector at present, because there is defective in traditional self-plugging rivet, the technician has developed a kind of novel high-strength by practice for many years and has connected self-plugging rivet, and this rivet riveting gun in the riveted joint installation process drives the drive nut rotation and causes the body distortion to form one " big footing " shape at matrix to reach the effect of riveted joint pretension.

As shown in Figure 1, a kind of novel high-strength connects self-plugging rivet, and this rivet comprises nail body 1, core bar 2, drive nut 3, body 4, ring 5.Nail body 1 is between body 4 and drive nut 3, and nail body 1 and core bar 2 are for being threaded; Core bar 2 bars directly are Full Thread FT, and the one end is T shape round column structure, are provided with at the middle part of core bar 2 and twist into two parts groove, and it is inconsistent to twist into two parts the two sections Major Diams in groove two ends, lean on core bar head end Major Diam greater than leaning on the tail end Major Diam; Body 4 is complete hollow step hole cylindrical structural, with core bar 2 be Spielpassung, be set on the core bar 2.Ring 5 is the full hollow cylinder structure of plastic material, with body 4 be Spielpassung, be installed in the relevant position of body 4; The end that nail body 1 matches with body 4 is external conical shape, and another end that matches with drive nut 3 is inner conical, and whole nail body 1 is complete hollow female thread structure; Drive nut 3 is the hexagonal female thread structure, with core bar 2 for being threaded, the big footpath of drive nut internal thread size is consistent with core bar tail end Major Diam.The end that drive nut 3 matches with nail body 1 also is cone structure.

During operation, riveting gun drives core bar 2 rotations, drives drive nut 3 rotations simultaneously, till being screwed to drive nut 3 and being adjacent to nail body 1.Because rotation makes body 4 distortion, riveting is revolved when contact with drive nut in core bar 2 fault trough places because the core bar Major Diam is greater than the big footpath of drive nut, core bar no longer rotate driven nut from fault trough twist revolve disconnected, thereby reach the pretension effect, guarantee to rivet join strength.

The present invention adopts advanced drive nut 3 blocking-up principles, is suitable for interlayer scope 1.27mm, and riveted joint core bar fracture dimensional range has guaranteed core bar fracture size and matrix plane basically identical at 0～0.76 ㎜.Guarantee that from fracture size and moulding blocking-up principle core bar phenomenons such as riveting, broken end can not occur, in addition because the core bar fracture is of a size of 0～0.76, do not improved efficient thereby the back polishing need not be installed, guaranteed that the nail surface can not sustain damage, and has improved the installation quality of self-plugging rivet simultaneously yet.The present invention is specially adapted to the riveted joint of single face bindiny mechanism.

Claims

1. self-plugging rivet is characterized in that: described rivet comprises nail body (1), core bar (2), drive nut (3), body (4), ring (5); Nail body (1) is positioned between body (4) and the drive nut (3), follows closely body (1) and core bar (2) for being threaded; Core bar (2) bar directly is Full Thread FT, and the one end is T shape round column structure, is provided with at the middle part of core bar (2) and twists into two parts groove, and it is inconsistent to twist into two parts the two sections Major Diams in groove two ends, leans on the head end Major Diam greater than leaning on the tail end Major Diam; Body (4) is complete hollow step hole cylindrical structural, with core bar (2) be Spielpassung, be set on the core bar (2); Ring (5) is full hollow cylinder structure, with body (4) be Spielpassung, be installed in the relevant position of body (4); The end that nail body (1) matches with body (4) is external conical shape, and another end that matches with drive nut (3) is inner conical, and whole nail body (1) is complete hollow female thread structure; Drive nut (3) is the hexagonal female thread structure, with core bar (2) for being threaded, the big footpath of drive nut internal thread size is consistent with core bar tail end Major Diam; The end that drive nut (3) matches with nail body (1) also is cone structure.