DE102006007706A1 - Gun rivet, has rivet body with collar, which has plain lower surface and access area for tool on front side opposite to lower surface and rivet tip is provided to drill hole in component - Google Patents

Abstract

The gun rivet has a rivet body (1) with a collar (3), which has a plain lower surface (4) and an access area for a tool on the front side (5) opposite to the lower surface (4). A rivet tip (6) is provided to drill a hole in the component, at which the gun rivet is to be attached. A central access area for deformation leads to a traction access on the central access by a tool to a deformation of the front area of the rivet head. Independent claims are also included for the following: (1) a method for setting gun rivet, which involves providing a gun rivet with rivet tips (2) a device for setting gun rivet, has mounting plate for holding gun rivet.

Description

The The invention relates to a rivet designed as a rivet, a device and a method for setting it.

blind rivets have been known for a long time. They serve to help two elements a riveting operation to connect with each other, with access to the back is not required. For this reason, blind rivets are suitable especially where access to the back of the two to each other too connecting elements not possible is. In the usual Blind rivets it is necessary to use the components to be connected holes to provide, through which the rivet body is inserted through. From the front is then at one Rivet pin pulled the rivet on the back to form a rivet head deformed.

It is already known, the tip of the thorn, on the front of the rivet stands out as a self drilling bit, so that with a corresponding device of the drilling process in one Operation can be carried out with the riveting process.

since For some time, it has also been known to use a blind rivet as a rivet form so that he can use a firing device in the elements to be joined without Pre-drilling a hole is shot. In these known weft rivets must, as with the other blind rivets on a passing through the rivet body Thorn to be pulled after setting to the actual riveting operation to effect. This relatively long thorn on which a tool for Pulling attacks, is then thrown away or falls uncontrolled in the area of the place where the riveting was carried out.

In addition, Hammerschlagniete are known in which a mandrel with a tip is inserted into a bore in a rivet body, which protrudes from the front side of the collar with its blunt end. Such rivets are driven in with a hammer blow. The hammer hits the protruding end of the spike. This hammer blow is not able to effect an exact division of the forces into a pure propulsive force and only then an expansion force ( US 3691924 ).

Of the Invention is based on the object, the possibility of blind riveting to improve so that after the riveting carried out no waste, which would have to be disposed of separately.

to solution this task strikes the invention, a Schussniet with the features mentioned in claim 1 in front. Further developments of the invention are the subject of the dependent claims.

Of the Weft rivet proposed by the invention is constructed in a similar way to a known one Schussniet with the difference that he has no thorn, on which a tool can pull. Instead, there are in the rivet body, for example at the end remote from the collar of the rivet sleeve training, the one makes such deformation possible. This training can by Sollknickstellen, slots in the longitudinal direction or the like can be achieved. The tool used to set the weft rivet is used, then attacks directly on this part of the rivet body.

For example can in the invention, the central attack point be formed at the end of a hole in the rivet body. To the Deformation on the collar of the rivet body opposite side, for example to limit two to be joined sheets is It makes sense, the hole in the rivet body in the form of a hole so deep that it is roughly in the area between the rivet and the rivet tip ends.

In Further development in the invention can be provided that the point of attack is formed at a constriction of a hole in the rivet body. Such Narrowing can be an enlarged attack surface for the pulling tool form.

Especially can be provided that the central point of attack to tensile strength Connection is formed with a tie bolt. This can be, for example so happened that the point of attack one transverse to the longitudinal axis running surface forms, to which a draw bolt can be welded, either by a resistance welding or also by a cold welding.

The Rivet tip, which serves to connect the hole in the one another In particular, a one-piece part can be produced of the rivet body be.

It but is also possible and is within the scope of the invention that the rivet tip a separate with the rivet body connected component is. As the rivet tip when making the rivet head against the Nietkör by Depending on the type of attachment of the draw bolt in certain circumstances to the connection of the rivet tip with the rivet body no increased requirements to be asked.

If the rivet tip is a separate component, it may have, for example, on its back side facing the rivet body an annular surface for engagement with the rivet body, within which on the Nietspitze a central projection is formed, which engages in the hole of the rivet body and fixed there, for example, frictionally or frictionally.

It can be provided in particular that the rivet tip of a other material or a differently pretreated material is as the rivet body.

ever on the type of attachment of the tie bolt on the Schussniet it can be beneficial if the sleeve section of the rivet body a deviating from the circular outer contour of its cross section having. Also possible it is when the in itself flat underside of the collar of the rivet body teeth or other sharp-edged protrusions that on this Make a twist of the rivet body across from prevent the sheets that he connects.

The Invention proposes also a method for setting blind rivets ago. In this Method is a provided with a riveting tip Schussniet in an element until a bottom of his collar on the Top of the element abruptly inserted, for example, shot. Simultaneously or subsequently is in a recess of the rivet body, which has the shape of a bore, a draw bolt inserted, until he gets the rivet body touched especially in the end of the depression. There is the draw bolt connected to the rivet body. Subsequently the draw bolt is pulled out of the recess, which causes it the front part of the rivet body deformed, increasing its diameter. The front area protrudes on the opposite side Side of the element, which is deformed to form a rivet head. As soon as the deformation is reached or the rivet head is formed, becomes the draw bolt from the rivet body solved. The tension bolt may be the next Setting process with the next Schussniet be used again.

Of the Drawbolt is part of a tool used for setting weft rivets can be used.

The Connection between the tie bolt and the Schussniet example by a cold welding getting produced. For this purpose, the tension bolt during the Contact with an attack point of the rivet body set in rotation become, what about the weld can lead.

A further connection possibility is that a resistance welding or a capacitor discharge welding between the rivet body and the tension bolt performed becomes. For this purpose, a power source can be arranged in a setting tool become. It makes sense in this case, that the tie bolt against the Schussniet in the area of its lateral surface is isolated and only his face is accessible.

A another possibility for the preparation of the connection is that the tension bolt has a self-drilling tip in the region of its front end and screw into the inner end of the hole in the rivet body. To this Purpose, the tension bolt can be set in a rotational movement, the after pulling out in the opposite direction is oriented to unscrew the self-drilling tip from the rivet body.

meaningful It is when the pulling movement of the tie bolt against the Collar of the rivet body supported. This is to ensure that the pulling force is not on the connection between the rivet body and the sheet acts. This can be achieved, for example in that the tensile force in a tool between a support element and the tension bolt is generated.

The Invention proposes also a device for setting weft rivets, which a holder for holding a Schussniets and at least one has in its front region tubular feed body, of a Drive can be advanced suddenly. This sudden Feed is used to initially include the Schussniet in the two sheets. The Device contains Continue with a tension bolt, from a drive to contact with a counter surface can be advanced in a recess of Schussniets. This Feed does not need to be abrupt. Furthermore, a connection device provided to the draw bolt with its front face with to connect the end of the recess in the rivet body. The drive for the Draw bolt is designed so that it the draw bolt after production the connection with great Force can pull, wherein the force is supported on the feed body, the at the front of the collar.

The Device contains Continue with a device to pull the draw bolt out after the rivet body to solve. This can be done, for example, by appropriate design of the size of the front face done the pull bolt. If this face is small enough, Although the connection may be sufficient, the deformation of the Schussniets to effect, but not sufficient, to further tighten to resist. Then tears simply disconnect.

Another way to disconnect the connection may be that the tension bolt is twisted. This can cause a shearing off Lead connection.

When Connecting means may be cold welding, resistance welding, or also a screwing provided by means of a self-drilling tip be.

Further Features, Details and Benefits The invention results from the claims and abstract, their wording by reference to the content of the description is made, the following description of a preferred embodiment the invention and with reference to the drawing. Hereby show:

1 a longitudinal section through a Schussniet according to the invention;

2 the schematic representation at the beginning of the setting process;

3 the state after setting the rivet body before the formation of the rivet head;

4 the insertion of the tension bolt;

5 the state after forming the rivet head by a pulling operation;

6 a side view of the result of the setting process;

7 one of the 4 corresponding representation in a modified embodiment;

8th schematically a device for performing the setting process with a Schussniet according to the invention.

9 an axial section through a Schussniet with an external thread on the collar;

10 an axial section through a Schussniet with an internal thread in the inner bore.

1 shows a longitudinal section through a Schussniet according to the invention. The Schussniet contains a rivet body 1 in its middle area as a rivet sleeve 2 is trained. At one end is on the rivet body 1 a collar 3 trained, who at his bottom 4 has a flat boundary surface. The bottom is the side that points towards the rivet point 6 is directed. On the level bottom 4 opposite top 5 , which is also flat or approximately planar, an attack surface for a setting tool is formed.

On the collar 3 opposite end is the rivet point 6 formed in which the cross section of the rivet body is continuous up to a real tip 6a reduced. In the rivet body 1 is a depression 7 formed as having the shape of a bore, that is, a cylindrical cross-sectional shape. The depression 7 ends in a soil 8th by a circumferential notch 9 from the wall 10 the depression 7 is disconnected.

The setting process of this Schussniets runs off so that the Schussniet is placed in a holder of a tool. The assignment between a part of the setting tool 11 and the rivet body 1 is in 2 he presented. The weft rivet is positioned so that the tip 6a the rivet point 6 on the surface 12 two superimposed sheets 13 . 14 to come to rest. These two sheets 13 . 14 should be connected by the Schussniet. On the rivet sleeve 2 opposite top of the collar 3 becomes part of the setting tool 11 placed. It is a feed body 15 , which is tubular in this area, so in the middle of a coaxial bore 16 contains. This feed body 15 is driven against the head of the rivet body with the help of a sudden drive 1 struck and this by this blow with his tip 6a and 6 through the two sheets 13 . 14 driven through. The result is the bottom 4 of the collar 3 on the top 12 the two sheets 13 . 14 at. This deforms the lower plate 14 something in the border area. The result of this first setting process, which drives only the rivet body through the sheets, is in 3 shown. An attachment sleeve surrounding the feed body, see 4 , comes to rest on the surface of the sheet. Excess energy is thus derived from the feed body in the attachment sleeve, so that the collar 3 The weft rivet needs to take up little energy if it is set flush.

Now, in a further step, a tension bolt 17 through the hole 16 of the feed body 15 moved through, which has a slightly smaller outer diameter than the bore 16 having. The tension bolt is moved forward until it hits the ground 8th the depression 7 of the rivet body 1 comes to the plant. There is a connection 18 for example, by a resistance welding. For this purpose, the draw bolt 17 isolated along its lateral surface, only its front surface is free. One pole of the voltage source is, for example via the feed body 15 , to the metallic rivet body 1 placed, and the other pole of the voltage source to the tension bolt 17 ,

Once the draw bolt 17 the ground 8th the depression 7 touched, created by the weld the connection 18 ,

Subsequently, the tie bolt against the feed body 15 attracted, as indicated by the arrow 19 in 5 is shown. By this pulling process, the rivet tip 6 against the two sheets 13 . 14 pulled, with the rivet sleeve 2 in the area between the back 20 the two sheets and the floor 8th deformed, as would be the case with a conventional blind rivet. As a result, a rivet head is on the back of the two sheets 21 formed as below in 5 is shown.

Now the tension bolt has to go 19 from the ground 8th the depression 7 be solved. This can be done, for example, that another tensile force is applied, sufficient, the connection 18 to destroy. Of course, this force must be less than the force that rivet head 21 would destroy. Another way to disconnect 18 is that the tension bolt 17 is now twisted. This creates a gravitational force that is the connection 18 solved. In this case, it makes sense that the rivet body 1 in the area of the rivet sleeve 2 has a non-round cross-section, or that the bottom 4 of the collar 3 Having projections, teeth or the like to prevent co-rotation of the rivet body.

As a result, a riveting of the two sheets 13 . 14 emerged, on one side 12 the two sheets of collar 3 and on the opposite side 20 the rivet head 21 is available. From the top of the collar 3 Seen from there is a central hole available.

In the embodiment described so far, the rivet body 1 a one-piece component, wherein the rivet tip 6 a continuation of the rivet sleeve 2 is. 7 now shows another way how the rivet body can be constructed. Here is the rivet sleeve 22 a real sleeve having a continuous inner opening. On the collar 3 opposite end of the rivet sleeve 22 is in this one rivet point 25 used, which is made as a separate component. The rivet point 25 has one of its top 6a remote annular flat boundary surface 26 on, which is the annular end of the rivet sleeve 22 equivalent. In the middle is an approach 27 formed, whose outer diameter is slightly larger than the inner diameter of the rivet 22 , In this way, the rivet tip 25 in the rivet sleeve 22 be fitted. This is a determination achieved. The connection between the tension bolt 17 and the approach 27 the rivet point 25 happens in the same way as in the embodiment of 1 to 6 , The approach 27 can also extend further into the rivet sleeve, possibly up to the attack surface 5 of the weft rivet. It makes sense here that the approach in the rivet sleeve does not touch the wall or only with little force, as it is to be pulled against the rivet sleeve.

8th shows a device for setting a Schussniets according to the method described here. The device includes a housing 30 , which is similar in construction and looks like a conventional setting tool for bolts. In the housing is displaceable in the longitudinal direction of the feed body 15 already stored in 4 was produced and mentioned. The feed body 15 contains a drive 31 which is constructed so that the feed body 15 opposite the housing 30 can be moved forward in a sudden movement to drive the Schussniet through the two sheets. This drive 31 For example, it may be exploded, for which purpose a gas cartridge 32 in the case 30 can be arranged. Coaxial in the feed body 15 is in a storage, not shown, of the draw bolt 17 also arranged displaceable in the longitudinal direction. The tension bolt 17 need not be propelled in a sudden forward motion, as he is the point of attack at the bottom of the recess 7 just have to touch. But he must have a drive, the tension bolt 17 retracts with great force, since this force must be sufficient to deform the deformation of the area of the rivet body which has passed through the two sheets. This drive can be achieved for example by a screwing.

Laterally in the front of the case 30 is a magazine 31 arranged in which a plurality of weft rivets are housed, by a spring in a holder immediately before the working end of the feed body 15 to be moved.

9 shows an axial section through another embodiment, wherein the collar on its the flat bottom 4 opposite side of an approach 51 that has the collar 3 makes a whole lot bigger. At this section 51 is an external thread 52 educated. The attack surface for the setting tool therefore has a greater distance from the flat bottom 4 , The outer contour of the collar section 50 without external thread, for example, be hexagonal, so that you can attack here with a wrench. The outer diameter of the thread 52 provided section 51 is larger than the outside diameter of the directly to the bottom 4 subsequent section 50 of the collar 3 ,

To prevent the Mitdrehens can at this bottom 4 Projections, ribs or the like may be arranged, which dig when setting the Schussniets in the material.

10 shows an embodiment in which the collar 3 Overall, also significantly thicker than in the embodiments of the 1 to 7 , Here is another directly to the bottom 4 subsequent section 50 formed, where in turn a key surface can be formed. The adjoining section 51 is outside smooth surface formed, so without thread. This is the outer area of the inner bore 7 , that is, to the attack surface 5 subsequent area, with an internal thread 53 Mistake. Here, after setting the Schussniets an element can be screwed, as well as the external thread 52 the embodiment according to 9 ,

The Schussniet according to the invention, in particular in the embodiment according to 9 and 10 , not only serve to connect two parts, such as sheets, with each other. Especially in the embodiment according to 9 and 10 For example, it is possible to use the weft rivet only to fix itself, and then to fasten another element to the weft rivet with the aid of the facilities provided. For this purpose, both the external thread 52 as well as the internal thread 53 serve. Other possibilities are conceivable, for example, through the threaded neck transverse bores, bayonet connections or the like.

If a weft not only can serve to connect two sheets, but also to fix only oneself, so it is not required that the widening of the front area up the back of an element to which the Schussniet be attached should. It is also possible and is within the scope of the invention that the expansion within the hole or hole can be made in the element itself, if the element to which it is attached has a correspondingly large thickness having. A deformation to the outside can therefore also within a hole, also a blind hole, done.

Claims (25)

Weft rivet, with 1.1 a rivet body ( 1 1.2, a collar formed thereon ( 3 ), the 1.3 an at least approximately flat bottom ( 4 ) and 1.4 on the bottom ( 4 ) opposite front side ( 5 ) an attack surface for a tool ( 11 ), 1.5 a rivet tip ( 5 . 25 ) for producing a hole in the component to which the weft rivet is to be attached, and at 1.6 a central point of attack for a deformation process, which is designed and arranged 1.7 such that an access by a tool at this point of attack ( 8th ) to a deformation of the front portion of the rivet body ( 1 ) below the underside of the collar, in particular at a distance from this bottom leads. A weft rivet according to claim 1, wherein the central attack surface ( 8th ) at the end of a hole ( 7 ) in the rivet body ( 1 ) is formed. Weft rivet according to claim 1 instead of 2, in which the central attack surface ( 7 ) at a narrowing of a hole ( 7 ) in the rivet body ( 1 ) is formed. Weft rivet according to one of the preceding claims, in which the central engagement surface for the tensile attachment of a tie rod ( 17 ) is trained. Weft rivet according to one of the preceding claims, in which the rivet tip ( 6 ) integral part of the rivet body ( 1 ). Weft rivet according to one of claims 1 to 4, wherein the rivet tip ( 25 ) a separate with the rivet body ( 1 ) is connected component. A weft rivet according to claim 6, wherein the rivet tip ( 25 ) consists of a different material than the rivet body ( 1 ). Weft rivet according to one of the preceding claims, in which the rivet tip ( 5 ) consists of a differently pretreated material than the rivet body ( 1 ). Weft rivet according to one of claims 6 to 8, wherein the rivet tip ( 25 ) on her collar ( 3 ) of the Schussniets facing back a flat annular surface for engagement with a rivet ( 22 ) of the rivet body ( 1 ) and optionally a central in the continuous recess of the rivet ( 22 ) of the rivet body ( 1 ) intervening approach ( 27 ) having. Weft rivet according to one of the preceding claims, with a non-circular cross-section of the rivet body ( 1 ) and / or protrusions on the flat underside ( 4 ) of the collar ( 3 ). Weft rivet according to one of the preceding claims, in which the collar ( 3 ) one with a thread, in particular an external thread ( 52 ) ( 51 ), which the attack surface ( 5 ) having. A weft rivet according to one of the preceding claims, in which the inner bore ( 8th ) has an internal thread. Weft rivet according to one of the preceding claims, in which the front region of the rivet body ( 1 ) is formed for expansion within a hole. Method for setting weft rivets, at the 14.1 one with a rivet point ( 6 . 25 ) into an element until a lower surface ( 4 ) of his collar ( 3 ) at the top ( 12 ) of the element is suddenly inserted, 14.2 into a depression ( 7 ) of the weft rivet a draw bolt ( 17 ) to the plant, in particular on the ground ( 8th ) of the weft rivet, 14.3 the draw bolt ( 17 ) with the Schussniet, in particular the soil ( 8th ) of the depression ( 7 ), 14.4 at the draw bolt ( 17 ) pulled to the deformation of the rivet and 14.5 the tension bolt ( 17 ) is separated from the weft rivet after widening the front portion of the rivet body. A method according to claim 14, wherein the compound a cold welding process is carried out. A method according to claim 14, wherein the compound a resistance welding carried out becomes. A method according to claim 14, wherein the compound a capacitor discharge welding is performed. Method according to one of claims 14 to 17, in which the Traction under support a counter-element is applied to the weft rivet. A method according to claim 14 or 17, wherein the Connection of the pull bolt with the weft rivet of the draw bolt in the Bottom of the recess screwed in and after pulling out again is screwed out. Apparatus for setting weft rivets, comprising 20.1 a holder for holding a weft rivet, 20.2 a feed body (at least in its front region) 15 ), 20.3 a drive ( 31 ) for the sudden advance of the feed body ( 15 ) 20.4 one coaxial with the feed body ( 15 ) arranged tie bolts ( 17 ), 20.5 a drive for the advance and retraction of the draw bolt ( 17 ), 20.6 a device for connecting the draw bolt ( 17 ) with the bottom of a depression ( 7 ) in the weft rivet, 20.7 a device for releasing the connection between the tension bolts ( 17 ) and the Schussniet. Apparatus according to claim 20, with a rotating device for rotating the draw bolt ( 17 ). Apparatus according to claim 20 or 21, comprising Cold welding device. Device according to Claim 20 or 21, with a device for carrying out a resistance welding between the tension bolt ( 17 ) and the Schussniet. Device according to Claim 20 or 21, with a device for carrying out a capacitor discharge welding between the draw bolt ( 17 ) and the Schussniet. Device according to one of claims 21 to 24, in which the Rotary device acts as a shear.