CN201763771U

CN201763771U - Press-riveting screw and nut combined member

Info

Publication number: CN201763771U
Application number: CN201020289731XU
Authority: CN
Inventors: 杨鑫; 王世敏; 冉杰; 郝晓波; 周圻
Original assignee: Guizhou Aerospace Precision Products Co Ltd
Current assignee: Guizhou Aerospace Precision Products Co Ltd
Priority date: 2010-08-12
Filing date: 2010-08-12
Publication date: 2011-03-16
Anticipated expiration: 2020-08-12

Abstract

The utility model discloses a press-riveting screw and nut combined member, comprising a screw (1) and a nut (2), wherein a press-riveting plane (3) is arranged on the side end face of a thread head of the screw (1); and a press-riveting thin wall (4) is arranged at one end of the nut (2). The utility model has the advantages that direct closing can be avoided; the ageing strengthening locking performance can be achieved during heat treatment; and the nut is permanently deformed and has relatively-large locking force after being subjected to press riveting. The utility model can greatly improve the reliability of the connection of the nut and the screw. After the nut and the screw are connected to be in place, the thin wall of the nut is clamped to be flat by using a tool, so that the thin wall of the nut is deformed permanently and is tightly attached to the press riveting plane of the screw and the nut cannot be unscrewed from the screw; and the nut can be unscrewed only by damaging the thin wall part of the nut, so that the reliability of the connection can be greatly improved.

Description

A kind of self-clinching stud nut assembly

Technical field

The utility model relates to a kind of self-clinching stud nut assembly, belongs to metal connecting piece.

Background technique

Existing locking, rotation inhibiting locking nut normally closes up to reach locking at screw mouth, the function of rotation inhibiting, this general self-locking nut, mainly be elasticity, increase frictional force with screw, and play locking functions at the part of nut by nut itself, though have the function of certain locking or rotation, if still can screw down but apply bigger strength, to the extra high position of reliability requirement, still can not meet the demands at some from screw.

The model utility content

The purpose of this utility model is, a kind of self-clinching stud nut assembly is provided.During use, nut is disposable to press on screw, makes nut produce permanent deformation, non-dismountable, improves the reliability that nut connects.

The technical solution of the utility model: a kind of self-clinching stud nut assembly comprises screw and nut; The side end face of the thread head of screw is provided with the plane that presses; Nut one end is provided with the thin-walled that presses.

In the aforesaid self-clinching stud nut assembly, the side end face of the thread head of described screw is provided with 1～3 plane that presses.

Compared with prior art, the utility model has the advantages that does not need direct closing in, heat treatment ageing strengthening locking property, and nut is a permanent deformation, the back coupling mechanism force that presses is relatively large.Can improve the reliability of screw, nut connection greatly.Nut be connected with screw put in place after, by instrument that the thin-walled place folder of nut is flat, make the thin-walled place of nut produce permanent deformation, be close on the plane that presses of screw, nut just can't spin down from screw again, if nut is screwed down, have only thin-walled place destruction just can screw down with nut, improved the reliability that connects greatly.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the axial sectional view of Fig. 1;

Fig. 3 is the perspective view of the utility model screw;

Fig. 4 is the plane structure schematic representation of the utility model screw;

Fig. 5 is the perspective view of the utility model nut;

Fig. 6 is the plane structure schematic representation of the utility model nut.

Being labeled as in the accompanying drawing: 1-screw, 2-nut, 3-plane, the 4-thin-walled that presses that presses.

Embodiment

The utility model is described in further detail below in conjunction with drawings and Examples, but not as to any restriction of the present utility model.

Embodiment.The utility model as depicted in figs. 1 and 2.A kind of self-clinching stud nut assembly comprises screw 1 and nut 2; The side end face of the thread head of screw 1 is provided with the plane 3 that presses (seeing Fig. 3 and Fig. 4); Nut 2 one ends are provided with the thin-walled 4 that presses (seeing Fig. 5 and Fig. 6).The side end face of the thread head of described screw 1 is provided with 1～3 plane 3 that presses.

Working principle of the present utility model

The utility model is to process the plane 3 that presses in the screw thread side of screw 1, on nut 2, process the thin-walled 4 that presses, behind nut 2 fix in position, in order to prevent that nut 2 from coming loose, with instrument that thin-walled 4 folders that press of nut 2 are flat, make thin-walled 4 places that press of nut 2 produce permanent deformation, be close on the plane 3 that presses of screw 1, nut 2 just can't spin down from screw 1 again, if nut 2 is screwed down, have only the thin-walled 4 places destruction that presses just can screw down, improved the reliability that connects greatly nut 2.The plane 3 that presses can have one, also two or three can be arranged, and had better not establish four planes that press, because after flattening relatively on one side, turn 90 degrees when flattening again, and the face meeting resilience of originally flattening can not well be locked on the contrary.

Self-clinching stud nut assembly of the present utility model only need flatten the thin-walled 4 that presses on the nut 2, and nut just has locking, rotation inhibiting, locking function.Nut is without closing in, heat treatment ageing strengthening nut check performance.The nut hole wall is thinner relatively, and need carry out annealing in process.Prevent to flatten back nut wall cracking.The flattening back nut is a permanent deformation, can not the secondary dismounting use.

Claims

1. a self-clinching stud nut assembly comprises screw (1) and nut (2); It is characterized in that: the side end face of the thread head of screw (1) is provided with the plane that presses (3); Nut (2) one ends are provided with the thin-walled that presses (4).

2. self-clinching stud nut assembly according to claim 1 is characterized in that: the side end face of the thread head of described screw (1) is provided with 1～3 plane that presses (3).