DE8432487U1 - Self-sealing blind rivet - Google Patents

Description

AVDEL LIMITED, Mundells, Welwyn Garden City, Hertfordshire, UK

Self-sealing blind rivet.

IO

The invention relates to self-sealing blind rivets and, in particular,

though not exclusively, blind rivets of this type with high Strength of the tear bar type.

Self-sealing blind rivets are generally known and in the 15th

essentially a tubular rivet body with a substantially cylindrical elongated shaft and one radially enlarged preformed rivet head at one end of the shank, with a bore extending axially through the head and shank and a elongated stem extends through the bore of the body. The stem has a stem end that extends from the head end of the body protrudes, a plug portion which is arranged in the bore of the body and a radially enlarged end head in the region of the other rear end of the shaft.

25th

To set the rivet, the protruding end of the handle is gripped and

; pulled while the head of the body is supported, se that the

End head is pulled towards the head of the body, causing the

The rear end of the shaft is expanded to form a blind head will.

30th

\ After setting the rivet, the plug section of the shaft is through

* held the body and clogged the hole so that the jj shear strength of the set rivet is significantly increased. It

it is common, if not absolutely necessary, that the stem

* 35

\ end of the remaining plug portion is removed after

j the rivet has been set and this is usually done by

Provision is made that the stem end from the stopper

cut is canceled when the stem reaches a predetermined tension is suspended after the rivet has reached the fully set condition. Such rivets are called "tear-off handles" · -

Rivets known.

On some types of self-sealing blind rivets, the end head is tapered towards the rear end of the body, allowing the end head to penetrate into the rear end of the body and can widen this so that the blind head is formed, but with blind rivets of the type in which the The present invention relates that the end head can rest against the rear end of the body and when the head of the body is pulled forward leads to a shortening of the shaft, so that it is curved outwards and forms a blind head.

In many situations in which self-sealing blind rivets are used, it is of particular importance that the plug portion not disengage from the bore of the body of the rivet being set. ¹ can, not only because this reduces the shear strength of the rivet, but also because the lost stopper itself can be a dangerous piece. In order to avoid this danger, it is desirable that the plug section is locked with the end head in the bore of the body of the set rivet, and various proposals for this have already become known, some of which are comparatively complicated. According to the invention, a self-sealing blind rivet is now proposed, the construction of which is not complicated and which, when the rivet is set, ensures that the plug section is effectively locked in the body.

According to the invention, a self-sealing blind rivet is proposed for this purpose, which has an elongated shank and a tubular rivet body, the body having an elongated one Shank, a radial enlargement that forms a rivet head, at one end of the shank, a rear end at the other end of the shank and has a bore that extends axially through the rivet head and the shank to the rear end, the stem through the drilling

tion of the body and has a stem end protruding from the head end of the body, and a plug with the stem end is connected, which has a substantially cylindrical first part in the region of the stem end, a second part through the first part is held at a distance from the stem end and a radially enlarged end head on the remote from the stem end End of the stem, the end head having a lower surface facing towards the stem end in order to bear against the rear end of the stem, furthermore the diameter of the plug in the second part suddenly in one of the first part pointing direction is reduced in diameter at a point which is at a distance from the lower surface of the end head, thereby to form a stop that points in the direction of the end head, and to create an annular groove between the stop and the lower surface, wherein the shank of the body also has a main section in the area of the rivet head and a t'nd section in one through the Main section has formed distance from the rivet head, in which, according to the invention, the end section of the shaft has an outer diameter which is progressively reduced in the direction of the rear end over a length section in the axial direction, the is greater than the width of the annular groove and in which the end section has a radially inwardly extending part in the region of the rear end of the shaft, the part extending into the annular groove.

The reduction in diameter of the stopper, which forms the stop, can be so sudden that if an increasing force is exerted on the plug in the set rivet, it reduces the inclination Figure 8 shows pushing the plug axially outward through the rear end of the body, the material of the body which is in the ring groove extends, resists pushing out the plug until the material of the body breaks.

It is preferred that the outer diameter of the end portion of the shaft progressively through a substantially continuous one smooth conicity reduced.

Cn ^::: -11.xi ,.

The outer diameter of the end portion of the shaft can alternatively decrease progressively through a plurality of stepwise reductions.
5

In a further development according to the invention, the inside diameter is of the end portion of the shaft progressively reduced in the direction of the rear end of the shaft.

The diameter of the second part of the plug can be progressive be reduced in the direction of the end head.

In detail it is possible that the progressive reduction of the Diameter of the second part of the plug through the annular groove and an initial reduction in the diameter between the annular groove and the main part of the plug is formed.

The initial reduction can be a gradual reduction.

Alternatively, the initial reduction can be by means of a single sudden Reduction are formed.

Alternatively, it is also possible to produce the initial reduction via a conicity.
25th

The part of the shaft which extends into the annular groove can the stem between the stop surface and the lower surface of the end head include.

The stop surface that presented in the sudden reduction may extend radially substantially at right angles to the longitudinal axis of the stem.

The bore of the body can preferably have a latch area in the vicinity of the rivet head, in this area the diameter of the bore compared to the diameter of the bore between the bolt area and the end portion is reduced and the first Part of the plug can be a variety of spaced around the perimeter

arranged ^ have protruding teeth, which when pulling the Plug along the bore in the direction of the rivet head in the longitudinal direction forming extending grooves in the body around the periphery of the locking portion of the bore.

The protruding teeth can preferably be formed in a zone of the first part of the plug, this toothed zone lies in the area of the stem end and the first part of the plug can have a further zone at a distance from the stem end, wherein the distance corresponds to the toothed zone and. wherein the further zone has a diameter which is substantially equal to that Is the maximum diameter of the toothed zone.

The rear end of the shaft preferably has a diameter which is no larger than the diameter of the lower surface of the end head.

The end head can have an undercut lower surface. 20th

The rivet can be a tear-off handle with a predetermined breaking point connects the end of the handle to the stopper.

In the following the invention is exemplified with reference to in the drawings illustrated embodiments explained in more detail. It shows:

Figure 1 is a partially sectioned side view showing a

Handle and a rivet body for a self-sealing blind rivet according to the present invention in one incomplete Shows state of construction;

FIG. 2 shows a partially sectioned view of a blind rivet

of the invention and a workpiece consisting of three Components with openings which are to be connected to one another by means of the rivet, with a part of the Setting tool for the rivet is illustrated;

FIG. 3 shows a sectional view along the line III-III of FIG. 2;

, Figure 4 is a partially sectioned view similar to Figure 2, which

'5, however, shows an early stage in setting the rivet;

Figure 5 is a view similar to Figure 4, which shows a later stage in Shows setting of the rivet;

'IO Figure 6 is a view similar to Figure 5, but which shows the rivet in the

shows fully set state in the workpiece and

Figures 7a, 7b, 7c and 7d _s partial sectional views of alternative forms of the stem.

15th

In Figure 1 of the drawings, a self-sealing blind rivet is shown, which has an elongated shaft 10 and a tubular rivet body 12, which before the setting of the rivet can be joined together to form a coherent component.

20th

The body 12 has an elongated shaft 14 of circular according to the cross-section, which a constant before assembly

th diameter over its length, with a radially enlarged Rivet head 16 is provided at one end of the shank.

A bore 18 extends axially through the rivet head 16 and the Shank t4 to the end of the remote from the rivet head 16 Shank, this end being designated by the reference numeral 20 and hereinafter referred to as the "rear end".

The stem 10 has an elongated stem end 22, a plug 24, which is connected to the stem end by a narrow predetermined breaking point 6 and a radially enlarged end head 28 at the end of the stopper (and consequently also the end of the stem) on which , away from the stem end 20. The stopper has a ring

groove 29 immediately next to the end head 28. The end head 23 has an undercut lower surface 30 which extends generally in the direction of of the stem end 22 points over the groove 29. In the illustrated Embodiment, the end head is undercut, i.

the lower surface 30 is provided with a recess to thereby present a surface which on the circumference of the head is slightly closer to the stem end 22 than the one located radially further inward Part of the lower surface.

Before the rivet is used, the stem 10 and rivet body 12 assembled with the stem end inserted into the bore 18 at the rear end 20 of the housing and passed through the bore is until the lower surface 30 of the end head 28 at the rear end 20 of the body and the stem end 22 then protrudes from the end of the body which has the preformed rivet head 16, wherein an end portion 32 of the shaft 14 in the region of the rear end 20 is crimped to deform the end portion 32 so that an inner Part 34 of the end portion 32 immediately adjacent to the rear end 20 penetrates into the groove 29 so that the body of the stem in the Bore holds, thereby enabling the so assembled The rivet can be handled without the parts being able to separate from each other prior to use.

A blind rivet according to the present invention is shown in FIG shown assembled condition.

The self-sealing blind rivet of this embodiment is of the known type of tear-away rivet. It can therefore be seen from FIG. 2 that the narrow predetermined breaking point which connects the plug 24 to the stem end 22 represents the weakest part of the stem 10, so that when the stem is subjected to tensile stress it tears off at the predetermined breaking point.
30th

The plug 24 has a generally cylindrical first part 36 immediately adjacent to the predetermined breaking point and a second part 38 on, which is held by the first part 36 at a distance from the stem end and the predetermined breaking point. The first part 36 has two adjacent zones, namely a toothed zone 40 immediately next to the predetermined breaking point 26 and a further zone 42, which of the predetermined breaking point is kept at a distance by the toothed zone, the further zone 42 having a smooth cylindrical surface

having. The toothed zone 40 has a plurality of around the perimeter spaced apart teeth 44 which extend in the longitudinal direction of the stem and point radially outward. It is obvious that the diameter of the toothed zone varies between a maximum and a minimum, depending on whether the diameter Measured over or between the teeth. At the maximum, however, i.e. on a circle that includes the radially outermost parts of the teeth, is the diameter of the toothed zone essentially the same as that of the further zone 42, so that viewed as a whole, the first part 36 of the plug is generally to be regarded as cylindrical is.

The diameter is reduced at the second part 38 of the stopper of the plug opposite that of the first part 36 in one direction, which points away from the first part towards the end head 28. In the illustrated embodiment, the diameter reduction is carried out in two stages so that the reduction is progressive. To this end, an initial reduction 46 is immediately next to the first part of the plug and a sudden further reduction 48 provided at a point which is spaced from the end head and from the end of the second part which adjoins the first part of the plug.

A particular purpose for producing the further reduction in the abrupt shape shown is to form an annular stop 50 which points axially towards the end head, and for this reason it is preferred that the further reduction 48 be as sudden as possible is executed. It is assumed that ideally the stop 50 should extend radially at right angles to the axis of the shaft, although a certain deviation from this ideal case can be permitted with regard to the practical difficulties in the manufacture of the handles without causing great disadvantages. The initial reduction 46 is not intended to form a stop, nor does it act as a stop. However, it is intended to contribute to the progressive _{reduction in diameter of the second part of the plug at s} so that the ratio of reduction is less than when it is through

the sudden further reduction 48 would be formed on its own. While dl «: the initial reduction could be designed as a cone, it will perceived as useful, the initial reduction in stages to train.

The annular groove 29 has a cylindrical root and a width

f between the abutment surface 50 and the lower surface 30, which is defined as the wall thickness at the rear end of the shank 14% 10 substantially equal to or greater.

The fact that the diameter of the plug is initially in one place is reduced, which is at a distance from the end head, which is greater than the width of the groove 29, enables a progressive Reduction of the inner diameter and outer diameter of the end portion of the shaft, which also has a axial length is achieved which is significantly greater than the width of the groove.

From Figure 2 it can be seen in particular that after the crimping, which takes place during the assembly of the stem and body, the Shank 14 of the body of the assembled rivet has two distinguishable sections, namely a main section 54 in the area of the rivet head 16 and the above-mentioned end section, which due to the crimping process is reduced to a smaller diameter at the rear end 20 of the shaft so that the inner and outer surfaces of the end section form a visible angle to the inner or Form the outer surface of the main section 54. The taper angle of the crimped, tapered end portion 32 is such, that the progressive reduction in diameter both outside and inside of the end portion essentially of the progressive Reduction in diameter of the second part 38 of the plug 24 corresponds.

The inwardly extending part 34 of the end portion 32 of this Embodiment penetrates so far into the annular groove 29 between the stop surface 50 and the lower surface 30 of the end head that that part of the plug with the small diameter at the bottom

• '··· t ff J · ff ·

the annular groove 29 is tightly encompassed and slightly more tightly shrunk than the rest of the end section was.

The bore of the rivet body 12 has a latch area 56 in the vicinity to the rivet head 16, wherein in this area the diameter of the bore is reduced to a diameter which the corresponds to the smallest diameter of the toothed zone of the plug or is slightly larger. The axial length of the latch area 56 is slightly larger than that of the toothed zone 40 of the plug. The body has a short counterbore 58 at the head end of the bore on, the counterbore having substantially the same diameter as the main part of the bore 18, which extends from the locking area 56 extends to the tapered end region 32.

In the case of the non-gasified rivet, the handle end 22 extends with play through the locking area 56. The first part 36 of the plug is located in the main part of the bore 18 which extends between the latch portion 56 and the end portion 32, and the first part 36 has a maximum diameter such that it fits in game in the main part of the bore and in a press fit seated in the latch area 56. When the stem is pulled to set the rivet and the toothed zone 40 of the plug into the Locking area is retracted, consequently cut the teeth 44 in Ren path in the material of the body in the circumference of the locking zone and form longitudinal grooves and corresponding in the material of the body Projections or teeth, which are in the locking zone with each other in engagement, in which this between the teeth 44 of the plug protrude. The smooth, cylindrical further zone 42 can then penetrate into the locking zone and deform the protruding areas or teeth of the body back into the longitudinal grooves so that the grooves behind the teeth 44 are closed. The mutual Engagement between the toothed zone of the plug and the longitudinal grooves and the corresponding teeth in the locking area 56 of the body is used when the rivet is set, a rotation of the plug with respect to of the body and the closing of the longitudinal grooves behind the teeth shows the tendency to lock the plug in the body and pulling the plug out of the rear end of the body

to prevent pers. ; ';

ti However, the self-sealing rivet according to the invention also has |.

tel, which serve to hold back the || To continue to support stuffing in the body, which follows from the I] following explanation. !

To this end, reference is first made to FIG. 2, the

Blind rivet according to the present invention is used to fasten three components provided with openings, which are joined together with mutually aligned openings and form a workpiece 60 - ^: Fasten. The workpiece 60 has a front side 62 which is accessible by the worker and a rear side or blind side 64 which need not be accessible. The aligned openings extend from the front to the blind side and the assembled rivet is inserted into the aligned openings so that the rivet head 16 abuts the front of the workpiece and the shank 14 extends through the workpiece with the end head of the stem, the tapered end portion and part of the main portion 54 of the shaft protrude beyond the blind side. The stem end 22, which has a plurality of annular pulling grooves 68, is then gripped and pulled by means of a tool which has means (not shown) for gripping the grooved stem end 22 and an annular counter-holder 70 which rests against the rivet head 22 and through which the handle end is guided into engagement with the gripping devices.

The tool is then operated to axially move the handle with respect to the Body to pull in a direction in which the end head 28 of the stem is pulled towards the rivet head 16, while the body is supported by the counter holder, as indicated by the arrows in FIG. At this point it should be mentioned, that the handle consists of a hard material which resists deformation and which tears off at the predetermined breaking point when a predetermined high tensile stress is achieved, the stem in the illustrated embodiment from a very hard one

* · ItI

is made of tough steel and the body is made of a relatively soft malleable Material is made, for example an aluminum alloy or, as in the exemplary embodiment, a steel alloy. 5

Due to the support of the rear end 20 of the shaft by the sub surface 30 of the end head, the actuation of the tool exposes the shaft 14 to a compressive stress and as a result begins the deform the protruding part of the shaft by creating an outwardly directed, circumferential bulge 22 between the blind surface of the workpiece and the end head is formed, at the same time the part of the shaft in the workpiece widens radially and fills the openings, as can best be seen from FIG is. In particular, the bulge 72 is centered in a position that is intermediate the ends of the tapered end portion 32 and is spaced from the rear end 20 of the shaft so that the inwardly extending portion 34 remains in the annular groove 29. As the handle continues to be pulled, the toothed zone of the plug penetrates the locking area 56 in the manner previously described and is advanced in this, the bulge 22 begins to engage with the blind side of the workpiece around the openings arrive and thus forms the blind head. At the same time, the end portion 32 begins to be deformed into a fold. The effect this folding consists in the fact that part of the end section, weleher lies between the fold and the rear end 20, is driven further into the annular groove 29, whereby it becomes a plastic Flow of the material in the groove comes so that this the groove between the stop surface 50 and the lower surface 30 of the end head, as illustrated in FIG. With a progressive Pulling the stem, the folding of the shaft material between the end head and the workpiece becomes more acute, so that the resulting BHndkopf rests over a considerable area on the blind side of the workpiece around the opening and the folded parts of the shaft close so that there are essentially gaps are closed and filled on the circumference of the annular groove, which were enlarged during the initial bulging of the end portion.

Finally, the smooth cylindrical further zone 42 begins in the Penetrate the locking area of the bore and this is due to the increasing resistance to further deformation of the body in the area of the blind head to the fact that the tensile force required to pull the handle further exceeds the tensile stress, which the predetermined breaking point can withstand. As a result, it tears Handle at the predetermined breaking point so that the tool and the handle end Can be removed for disposal and the rivet in the full set state remains in the workpiece, the components of the workpiece tightly clamped between the rivet head and the blind head as shown in FIG.

Due to the progressively reduced outer diameter of the end portion of the shaft of the housing, the compressive force which is transmitted to the rear end of the shaft by the end head when pulling the stem through the tapered end portion in a direction of the rivet head is outwardly at an angle to the longitudinal axis of the shaft inclined. This leads to the generation of forces which support the formation of a pear-shaped, extending around the periphery bulge in the shaft at an axial force _ä soft lower such as the force that would be required to a similar bulging to produce a comparable shaft which no having progressive reduction of the outer diameter in the direction of the rear end.

It is believed that in order to ensure that the complete set rivet provides sufficient resistance to pushing the plug axially out of the body through the rear end has an increasing force exerted on the plug, it is necessary that the sudden reduction in diameter which the The stop forms so suddenly that the surface of the stop is sufficiently inclined with respect to the longitudinal axis of the stopper, so that it can be used to sufficiently deform the material of the housing, which extends into the annular groove, so that the plug can leave the body before the material of the body ruptures. By making the surface of the stop essentially in the right There is hardly any angle to the axis of the plug

a tendency that, when attempting to push the plug out of the rear end of the body, the stop deforms the material of the body which has penetrated into the annular groove in the radial direction outwardly like a tapered wedge. As a result, the inwardly extending portion 34 tends to remain in the annular groove in abutment against the stop. The force exerted on the stopper creates tension in the stem of the body and ', it has been found that the material of the body ruptures and

borrowed allows the plug to leave the body, inde-; he de part of the material; Body, which is in engagement with the annular groove 29, takes with it.

It is obvious that other embodiments according to the

Invention are possible. For example, instead of progressive Reducing the diameter of the second part of the plug provided that two stepped reductions are formed each of which reduces the diameter of the plug to a smaller diameter of a cylindrical part and one clearly defined stop surface essentially at right angles; to the axis of the stem, the progressive diameter

<decrease in a gentler progressive manner as well

achievable, although this is achieved by holding the plug in the body of the set rivet is likely to be less effective. 25th

Consequently, the initial reduction in diameter should be by a conicity take place, which extends to the point of sudden further diameter reduction. The further reduction itself could also take place by means of a conicity, but such a conicity would have to be very steep in order to act as a stop to serve, which would be effective to apply to the inner part of the end portion to thereby push out the plug resist. Alternatively, the stop could be dinter-cut in order to cover the annular groove in a similar manner

Way, like the undercut undersurface of the end head.

Although the end portion 32 of the stem is shown as being frusto-conical and an essentially continuous, tapering

I »I-

• *

de has outer surface, it is equally possible here a number to provide step-by-step reductions in the outer diameter, although this need not necessarily be an advantage. Different alternatives however, are shown in Figures 7a to 7d.

All from the description, claims and drawings Features and advantages of the invention, including constructive ones Details and spatial arrangements can be essential to the invention both individually and in any combination be.

· ♦ · ♦ «.. ) I

20 "

REFERENCE LIST

10 stalk 12th Rivet body 14th shaft 16 Rivet head 18th drilling 20th Rear end 22nd Stem end 24 Plug 26th Predetermined breaking point 28 End head 29 Ring groove 30th Lower surface of the head 32 End section 34 radially inwardly extending part 36 first part of the plug 38 second part of the plug 40 toothed zone 42 further zone 44 teeth 46 initial reduction 48 further reduction 50 attack 54 Main section of the shaft 56 Latch section 58 Counterbore 60 workpiece 62 front 64 Blind side 68 Pull notches 70 Counterholder 72 Bump or blind head.

Claims (16)

MTENMNH ^ Ui BROSE + B4RTNER European Patent Attorneys - Mandatairtfe βη £ φΜφ ^ ropijens - {ugejasse «e wrtreter at the European Patent Office D-8023 Munich-Pullach, WienerStraBe ^ DsfeftwJP 89) 7 §330 71; Jfelex δβΙΣΜ? bijs d; Cables: "Patentibus" Munich IO1RL A BROSEt 1981 Dipl.Hng. DK / KL BROSE DipUng., Dipl.-Wirtsch.Hng. MOMS. RESCH Dipl.-Phys. E o. [.Ti., ··, eäiatt AVDEL LIMITED, Mündel! S, Welwyn Garden City, Hertfordshire, Great Britain iezeehen: p.294 Jf * November 6, 1984 Your ret: Date: DBr-au PROTECTION APPLICATIONS 1. Self-sealing blind rivet with an elongated stem and a tubular rivet body, the rivet body having an elongated one Shank, a radial enlargement that forms a nie + head at one end of the shank, a rear end at the other nc9 des Shank and a bore which extends axially through the rivet head and the shank to the rear end, wherein the stem extends through the bore of the rivet body and has a stem end protruding from the head end of the body, further a plug is connected to the stem end, which has a generally cylindrical first part in the region of the stem end, a second Part at a distance from the stem end, which corresponds to the first part, and a radially enlarged end head having a lower surface of the head facing toward the stem end to abut with the rear end of the shaft, and wherein the diameter of the plug in the second part pointing away from the first part a point at a distance from the lower surface of the end head suddenly 1m diameter decreased 1st, thereby creating a stop to form, which points in the direction of the end head, and to form a ring FernnfUndlldhe Verelrib & rurig4n * only have a binding written confirmation. to form a groove between the stop and the lower surface of the end head, wherein the shank of the rivet body furthermore has a main section in the area of the rivet head and an end section which is held by the main portion at a distance from the rivet head, characterized in that the end portion (32) of the shaft (14) has an outer diameter which progressively in the direction of the rear end (20) over a length in axial direction is reduced in diameter, which is greater than the width of the annular groove (29), and that the end portion * (32) a has a radially inwardly extending part (34) in the region of the rear end (20) of the shaft, which extends into the annular groove (29) extends. 2. Blind rivet according to claim 1, characterized in that the outer diameter of the end section (32) of the shaft (14) is progressively reduced by an essentially continuous conicity. 3. Blind rivet according to claim 1, characterized in that the outer diameter of the end portion (32) of the shaft (14) is progressively reduced through a plurality of step-shaped reductions. 4. Blind rivet according to one of the preceding claims, characterized in that that the inner diameter of the end portion (32) of the shaft (14) progressively towards the rear end (20) of the Shank is reduced, and that the diameter of the plug (24) progressively in the direction of the end head (23) over an axial Length portion is reduced, which is greater than the width of the annular groove (29). 5. Blind rivet according to claim 4, characterized in that the inner diameter of the shaft (14) and the diameter of the plug (24) are reduced in substantially the same proportion. 6. Blind rivet according to claim 5, characterized in that the progressive Reduction of the diameter of the stopper (24) through the annular groove (29) and an initial reduction (34) of the diameter between the annular groove (29) and the first part (36) of the stop fens (24) Gebi ld Ub- 1 Xb ¹ ·: · is. 3 1 7. Blind rivet according to claim 6, characterized in that the an- initial reduction (34) a stepwise reduction in diameter is. 8. Blind rivet according to one of claims 6 or 7, characterized in that that the initial reduction (34) is formed by means of a single stage of diameter reduction. 9. Blind rivet according to claim 6, characterized in that the initial Reduction (34) is formed by a conicity. 10. Blind rivet according to one of the preceding claims, characterized in that that the stop (50), which is formed by the sudden reduction, radially and substantially in the right Extends angle to the longitudinal axis of the stem (10). 11- blind rivet according to one of the preceding claims, characterized in that that the part (34) of the shaft (14) which extends into the annular groove (29), the stem between the stop (50) and the lower surface (30) of the head. 12. Blind rivet according to one of the preceding claims, characterized in that that the bore (18) of the body (12) has a latch section (56) in the region of the rivet head (16), in this Area of the diameter of the bore (18) compared to the diameter of the bore between the bolt area (56) and the end portion (32) is reduced, and that the first part (36) of the plug (24) has a plurality of spaced and circumferential has protruding teeth (44), soft when pulling the plug (24) along the bore (18) in the direction of the rivet head (16) longitudinally Form grooves in the housing (12) around the circumference of the locking area (56) of the bore (18). 13. Blind rivet according to claim 12, characterized in that the above Teeth (44) in a zone (40) of the first part (36) of the Plug (24) are formed, the toothed zone (40) in the area of the stem end (22) lies, and that the first part (36) dss plug (24) has a further zone (42) at a distance from the handle end (22), the distance corresponding to the toothed zone (40), and wherein the further zone (42) has a diameter which in essentially corresponds to the maximum diameter of the toothed zone (40). 14. Blind rivet according to one of the preceding claims, characterized in that that the end head (28) has an undercut UnterfiK-surface (30). 15. Blind rivet according to one of the preceding claims, characterized in that indicates that the rear end (20) of the shaft (14) has a diameter which is larger than that of the lower surface (30) of the end head (28), 16. Blind rivet according to one of the preceding claims, characterized in that that the handle (10) has a predetermined breaking point (26) between the handle end and the plug (24).