CN1046374A

CN1046374A - Self-drilling blind rivet

Info

Publication number: CN1046374A
Application number: CN 90102692
Authority: CN
Inventors: 柯特·诺德斯特龙; 斯文·斯坦伯格
Original assignee: Individual
Current assignee: Individual
Priority date: 1985-08-14
Filing date: 1986-08-07
Publication date: 1990-10-24
Also published as: CN1018944B

Abstract

The present invention relates to a kind of self-drilling blind rivet, this rivet comprises the upset diameter pin that rivet cover and passes this rivet cover at least in part and stretches out from an end of this rivet cover.With a drill bit, this drill bit puts and just is arranged on this upset diameter pin as not being set directly at this rivet in the other end attaching of rivet cover.

Description

Self-drilling blind rivet

The present invention relates to a kind of self-drilling blind rivet, this rivet comprises the upset diameter pin that rivet cover and passes this rivet cover and stretches out from the end that this rivet overlaps to small part.

The self-drilling blind rivet specific design becomes to be applied to and can and can draw on the instrument of rivet in order to boring.This instrument for example is found in Swedish patent application case 8503802-4 number.

Self-drilling blind rivet is known by people already.In this rivet, the upset diameter pin passes the rivet cover, and the upset diameter body then is configured to a drill bit tip on the opposite end that is positioned at the end that this rivet cover drawn.It is quite expensive to produce this self-drilling blind rivet cost, in addition, also exists certain restricted, promptly can not make various types of tubular-shank rivets, for example, can not make airtight tubular-shank rivet, in this airtight tubular-shank rivet its upset diameter pin must by the hermetic seal sleeve such as aluminum rivet cover encirclement.The known self-drilling blind rivet of this class for example has been disclosed in No. the 411787th, Sweden's public publication, West Germany and has openly applied in No. the 3rd, 750518, No. 2457136 and No. 2554577 and the U. S. Patent.

The object of the present invention is to provide a kind of self-drilling blind rivet, its manufacture cost is cheap, and has good boring performance, in addition, also can be made into and has a kind of airtight sleeve.

Above-mentioned purpose of the present invention has been obtained by the technical characteristics of giving it defined in claims of the present invention to realize.

Now describe the present invention in detail with reference to attached form with the non-limiting description example.Wherein:

Fig. 1 is first embodiment's of the rivet of the present invention side view of partly cut-away;

Fig. 2 sees side view in the past for the rivet among Fig. 1 from the left of Fig. 1;

Fig. 3 is by seeing drill bit tip in the past on Fig. 2 top;

Fig. 4 illustrates the tip portion of the upset diameter pin among Fig. 1, and this end is not equipped with drill bit;

Fig. 5 is the B-B sectional view of Fig. 5 medial end portions;

Fig. 6 is second embodiment's the partial cross sectional side elevation view of the airtight tubular-shank rivet of a kind of remodeling of the present invention;

Fig. 7 sees side view in the past for the tubular-shank rivet among Fig. 6 by the left of Fig. 6;

Fig. 8 be among Fig. 7 along the view of arrow A-A, the neck ring part of rivet is shown;

Fig. 9 illustrates the C-C part of the end of the rivet cover among Fig. 6, and drill bit is removed.

Therefore, tubular-shank rivet of the present invention is shown in Fig. 1-5, and this rivet comprises rivet cover 1, and this rivet cover is configured to a neck ring part 2.One upset diameter pin 3 passes the center hole of this rivet cover, and this pin is configured to rotate the wing 4 outside being positioned at the collar branch, in order to rotate this upset diameter pin 3.Be configured to an amplification main body 5 from the other end of the rivet cover 1 upset diameter pin that stretches out with external diameter of the sleeve part that is approximately equal to rivet cover 1, the main body 5 of this amplification constitutes one with the remaining part of this upset diameter pin, the side is configured to a vulnerable area 6 under the main body of this amplification but being right after, behind the rivet of riveting tightly, this main body is separated from this upset diameter pin in this weak point office.Groove 7 of in the main body 5 of amplifying, making in order to admit a topping machanism 8.This topping machanism 8 tools, one a working angles sword 9 and a recess that is provided with thereunder, this can be by being clear that in Fig. 2 and 3.This main body 5 preferably also forms and has one and extend in the groove 7 and engage the holding element 11 of the recess 10 of topping machanism 8.So that on main body, fix this topping machanism.Can be clear that from Figure 4 and 5, but also shown in the dotted line among Fig. 1, the bottom of groove 7 can be made into roof shape, the bottom of this topping machanism 8 is then made with the bottom of this groove suitable, so that further fix this topping machanism on main body.The width of this topping machanism 8 is slightly greater than the diameter of main body 5, also is a bit larger tham the sleeve part of this rivet cover 1.

The material of making topping machanism 8 is different from the material of making this rivet cover and upset diameter pin, and can be pressed into suitable shape and the plug-in unit made by for example Drill Steel or by dusty material.

Tubular-shank rivet shown in Fig. 6 to 9 also has a topping machanism 8.Yet in this case, this upset diameter pin 3 does not pass completely through rivet cover 2, and on the contrary, the rivet cover surrounds the main body of the amplification of this upset diameter pin herein, and the diameter of this upset diameter pin is less than the diameter of this rivet cover.Therefore, this rivet is a kind of airtight rivet, and this topping machanism then is connected to the tip portion of rivet cover 1.The embodiment of this topping machanism is substantially the same with the topping machanism of Fig. 1 to 5 illustrated embodiment, yet, the bottom of this topping machanism then has some profile inequality, this can be by being clear that among Fig. 6, and groove 7 is formed on the end of rivet cover 1 herein, also forms in the another kind of mode that matches with topping machanism.Because this upset diameter pin 3 does not rotate so that the boring performance to be provided in this case, therefore, on the neck ring part of the tube that this rivet overlaps, form cross bath 12, as being clear that from Fig. 8, this cross bath 12 can cooperate suitable throw.

The material that is to make this topping machanism in the general character of the tubular-shank rivet shown in each figure is a material of making rivet cover and upset diameter pin with being different from.This topping machanism can be the drill bit of making as Drill Steel, also can be made by dusty material, and this dusty material for example can be silicon carbide.Therefore, this silicon carbide can be pressed independently drill bit and be connected topping machanism on rivet or the upset diameter pin of one of imaging, or is coated on the end of the end of rivet or upset diameter pin.Because this dusty material is directly to be coated in rivet to put, not only need the rivet cover is formed a cutting edge, and under certain case, also may directly dusty material be coated on the end surface of substantially flat of a rivet.As for how disposing that this cutting dusty material depends on then that this rivet is ready to use on the sort of material and fixed.Make topping machanism to realize cutting effect owing to adopted the another kind of material that is different from the material of making rivet cover and upset diameter pin, thereby might be when obtaining excellent boring performance, can adopt light metal to make rivet cover and upset diameter pin, but if then cannot adopt light metal when directly obtaining cutting effect with the material metal of making this rivet cover and upset diameter pin, therefore, and even the light metal of the available for example aluminium of rivet cover upset diameter pin make.

If this topping machanism so that independently the form of drill bit provides, preferably is connected on rivet or the upset diameter pin by welding, soldering or adhesives.

This drill bit 8 is preferably made the blade that creeps in the groove that the end that if can be inserted in rivet or upset diameter pin forms, as shown in FIG..

The rotation wing on the upset diameter pin is shown in the drawings, also is illustrated in the cross bath on the neck ring part of rivet cover, this rotation wing or cross bath are in order to realize the rotation of the needed rivet of boring.In these cases, instrument to be used must provide with corresponding geared assembly so that rotate this rivet and/or this upset diameter pin by the rotation wing or cross bath.Yet these provide also available multiple other of device of rotation is that conspicuous distinct methods is implemented for the person of ordinary skill of the art.

Claims

1, self-drilling tubular-shank rivet comprises a rivet cover and the upset diameter pin that an end that passes this rivet cover at least in part and overlap from this rivet stretches out, it is characterized by in the other end of this rivet attaching with a drill bit, this drill bit puts on the end that just is arranged at this upset diameter pin pin as directly not being arranged at this rivet.

2,, it is characterized by this drill bit and make with Drill Steel as the drilling blind rivet in the claim 1.

3,, it is characterized by this drill bit and form with the dusty material compacting as the self-drilling blind rivet in the claim 1.

4,, it is characterized by the recess that this drill bit inserts the end that is arranged in rivet cover or upset diameter pin as the self-drilling blind rivet in the claim 1.

5, as the self-drilling blind rivet in the claim 1, it is characterized by the end of the other end of rivet cover round the upset diameter pin, topping machanism then is arranged on the end of rivet cover.

6, as the self-drilling blind rivet in the claim 1, it is characterized by this drill bit is to be attached on this rivet cover or the upset diameter pin by welding.

7, as the self-drilling blind rivet in the claim 1, it is characterized by drill bit is by being bonded in tackiness agent on this rivet cover or the upset diameter pin.

8, as the self-drilling blind rivet in the claim 1, it is characterized by this drill bit is to be attached on this rivet cover or the upset diameter pin by soldering.