CN2132864Y

CN2132864Y - Self-riveting nut

Info

Publication number: CN2132864Y
Application number: CN 92215737
Authority: CN
Inventors: 周魁刚
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-06-20
Filing date: 1992-06-20
Publication date: 1993-05-12
Anticipated expiration: 2002-06-20

Abstract

The utility model provides a novel self-riveting nut for fastening, and the self-riveting nut is especially suitable to fasten and rivet a sheet and a thin wall structural part. The utility model is characterized in that the self-riveting nut comprises a projecting head and a hollow rod portion which and the head are connected into integration, and the inner side of the hollow rod portion is provided with screw threads. When riveting, a hole is drilled on the thin wall structural part, and the hollow rod portion of the self-riveting nut is inserted into the circular hole drilled on the thin wall structural part. A set of plain screws and nuts whose screw threads are matched with the self-riveting nut is re-selected, the plain nuts are screwed after screws sheathed with the nuts being sheathed and screwed in the self-riveting nut, and the hollow rod portion is ridged and deformed in the process of screwing to rivet the thin wall structural part. The utility model has the advantages of one-way implantation riveting and convenient and safe work.

Description

Self-riveting nut

The utility model relates to a kind of fastening piece, be meant especially in industries such as machinery, building, decoration, low pressure vessel thin plate and thin-walled member be fastenedly connected usefulness from Insert Nut.

At present thin plate and thin-walled member be fastenedly connected general employing riveted joint or welding method, belong to non-disconnectable joining method.In the structure that is connected must be again the next general employing screw-nut of the situation connecting means that can install and remove.When the member shape more special, when the point of attachment nut screw is difficult for entering (as sealing or semiclosed member), then can be on member tapping to reach the connection purpose.But it is thinner relatively as the member wall thickness, do not reach behind the tapping when guaranteeing the necessary number of threads of join strength, use screw fastening again after can only adopting the local thickening of welding method or directly nut being welded on the position of required connection, but make member produce bigger internal stress and cause distortion easily like this, influenced precision, quality and appearance neat and artistic of whole parts, technology is also complicated simultaneously, and cost is higher.

The purpose of this utility model provides a kind of be applicable to thin plate and the fastening connection of thin-walled member, and can the required point of attachment of unidirectional implantation and the unidirectional fastening novel fastener-from Insert Nut of carrying out.

The structure characteristic from Insert Nut that the utility model proposes is, it comprises the head of a protrusion and the bar portion of the hollow that fuses with head, and the inboard tail end of hollow stem portion has screw thread.The member that connects for making can bear bigger moment of torsion, can offer one or several pin holes from the head of Insert Nut.

This advantage from Insert Nut is to be applicable to being fastenedly connected of thin plate thin-walled material, and energy required fastening position of unidirectional implantation and the unidirectional terminal operation that carries out, and operation is convenient, handling safety.

Accompanying drawing 1 is the utility model-from the structural representation of Insert Nut, Fig. 2 for the band pin hole from Insert Nut head figure, Fig. 3 be from the fastening riveted joint process of Insert Nut schematic representation, Fig. 4 is the phase diagram of thin-walled member after Insert Nut is riveted.Among the figure:

1. from Insert Nut head 2. hollow stem portions

3. pin hole 4. supporting screws

5. supporting nut 6. thin-walled members

7. the deformation place 8. leakage proof seal rings after riveting

The utility model is described in further detail below in conjunction with accompanying drawing.Describedly can make the series specification product from Insert Nut, be M5～M24 as the series specification of thickness tooth straight thread, and the series specification of straight tube pitch thread is 1/8 "～1 ".Above-mentioned series specification be applicable to that from Insert Nut grip is 1～10 millimeter a sheet material, and various thin-walled sealing, semiclosed member and section bar.

During riveted joint, bore the circular hole of one or several corresponding sizes at the required riveted joint position of thin-walled member 6.In the Insert Nut specification series, select for use required specification from Insert Nut, will implant in the circular hole that gets out on the member 6 from Insert Nut.Get and from an adaptive cover screw 4 and the nut 5 of Insert Nut, as shown in Figure 3 screw 4 is packed into and screws in behind Insert Nut, with spanner spin nut 5, nut 5 screws in the process and is out of shape from Insert Nut hollow stem portion protuberance, and formation deformation place 7 is riveted thin-walled member.The length of deformation place is generally 3～15 millimeters, and the wall thickness of the hollow stem portion of distortion is generally 0.3～3 millimeter (disregarding except the helical thread portion).When the riveted joint low pressure vessel, can serve as a contrast, in case riveted joint place seepage into seal ring 8.Need bear bigger moment of torsion during as member 6 riveted joint, then can select for use head 1 band pin hole 3 from Insert Nut.

Claims

1, a kind of thin plate that relates generally to industries such as being applied to machinery, building, decoration, low pressure vessel and thin-walled member be fastenedly connected usefulness from Insert Nut, it is characterized in that describedly comprising the head 1 of protrusion and the bar portion 2 of the hollow that fuses with head 1 from Insert Nut, the inboard tail end of hollow stem portion 2 is provided with screw thread.

2, as claimed in claim 1 from Insert Nut, it is characterized in that having pin hole 3 on the described head 1.

3, as claimed in claim 1 or 2 from Insert Nut, it is characterized in that the wall thickness that described hollow stem portion 2 removes behind the helical thread portion is 0.3～3 millimeter, the length of the deformation place 7 of hollow stem portion 2 is 3～15 millimeters scopes.