EP2773479A1 - Fastener for welding having a shank and a flange with projections, joining method and joining connection using such fastener - Google Patents
Fastener for welding having a shank and a flange with projections, joining method and joining connection using such fastenerInfo
- Publication number
- EP2773479A1 EP2773479A1 EP12786897.4A EP12786897A EP2773479A1 EP 2773479 A1 EP2773479 A1 EP 2773479A1 EP 12786897 A EP12786897 A EP 12786897A EP 2773479 A1 EP2773479 A1 EP 2773479A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fastener
- flange
- shank
- structural part
- welding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000003466 welding Methods 0.000 title claims abstract description 79
- 238000005304 joining Methods 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 28
- 239000002184 metal Substances 0.000 claims abstract description 13
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 230000000284 resting effect Effects 0.000 claims description 5
- 238000010891 electric arc Methods 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 238000007654 immersion Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 2
- 229920002994 synthetic fiber Polymers 0.000 claims description 2
- 230000007797 corrosion Effects 0.000 description 13
- 238000005260 corrosion Methods 0.000 description 13
- 239000004922 lacquer Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 6
- 238000007598 dipping method Methods 0.000 description 4
- 238000003618 dip coating Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000009969 flowable effect Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
- B23K35/0255—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in welding
- B23K35/0288—Welding studs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/20—Stud welding
- B23K9/207—Features related to studs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B37/00—Nuts or like thread-engaging members
- F16B37/04—Devices for fastening nuts to surfaces, e.g. sheets, plates
- F16B37/06—Devices for fastening nuts to surfaces, e.g. sheets, plates by means of welding or riveting
- F16B37/061—Devices for fastening nuts to surfaces, e.g. sheets, plates by means of welding or riveting by means of welding
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
- F16B5/08—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of welds or the like
Abstract
Fastener for welding, joining method and joining connection In a fastener (1) of metal having a shank (2), which has a welding end (3) and at some distance from the welding end (3) a flange (5), which has a greater diameter than the shank (2), the flange (5) on the side turned toward the welding end (3) is provided with a plurality of projections (10), which are arranged at some distance from the shank (2) and from each other and which with their free ends form contact surfaces for a structural part.
Description
FASTENER FOR WELDING HAVING A SHANK AND A FLANGE WITH PROJECTIONS, JOINING METHOD AND JOINING CONNECTION USING SUCH FASTENER
The invention relates to a fastener of metal having a shank that extends in the direction of an axis and has a welding end, and having a flange, arranged on the shank at some distance from the welding end, which has a greater diameter than the shank. The invention in addition relates to a joining method for the connection of at least one structural part with a supporting part of metal with the use of a fastener of that kind, and a joining connection which comprises a supporting part of metal, at least one structural part with an aperture resting on one side of the supporting part and a fastener of that kind.
Fasteners of the kind indicated are used in, among other industries, automobile construction for the fastening of structural parts of various kinds to the automobile body. The fasteners are welded with the use of conventional stud welding techniques, in particular drawn arc stud welding, to structural parts of the automobile body suitable for welding. By means of mechanical fasteners, such as nuts, screws or clamps, the welded-on fasteners are then connected with the structural parts to be fastened.
US 3,774,009 also discloses a fastener with which, simultaneously with welding on of the fastener, the structural part to be fastened can be connected with the supporting part to which the fastener is welded. Here, the structural part to be fastened has an opening in the region of the weld, through which the fastener is welded to the supporting part by its welding end. The fastener has a flange that is greater than the opening and, after the fastener is welded on, rests firmly on the edge region of the structural part surrounding the opening and thereby holds the structural part interlocking on the supporting part.
Another fastener designed for welding is disclosed in GB 1 ,075,969 A. This fastener has a shank and a flange and is welded by means of an arc stud welding method through an aperture in a plate-like element to be fastened to a
metal supporting part. Here, the plate-like element has a plurality of channels, which lead outward from the weld, so as to permit the escape of gas from the weld.
In automobile construction, the supporting parts to which fasteners of the kind mentioned are welded are, as a rule, already provided with corrosion protection. This corrosion protection is destroyed in the region of the weld when a fastener is welded on. In order to prevent corrosion damage from being caused by this, it is necessary to again provide the region surrounding the weld with suitable corrosion protection. Electro-chemical dip coating methods are generally used for this, where pre-assembled structural components, for example automobile bodies, receive a uniform coating of an anticorrosive lacquer by immersion in a lacquer dipping bath. In the case of fasteners that simultaneously with welding-on of the fastener also connect the structural part to be fastened with the supporting part, the restoration of corrosion protection in the vicinity of the weld is a problem, because the fastener rests by its flange on the edge of the fastened structural part surrounding the fastening opening and therefore interferes with application of the anticorrosive lacquer in the region of the weld.
The object of the invention, therefore, is to design a fastener of the kind indicated above so that after the fastener is welded on the region of the weld can be effectively protected against corrosion in simple fashion.
According to the invention, this object is accomplished by a welding element of metal comprising a shank that extends in the direction of an axis and has a welding end, and a flange, arranged at some distance from the welding end on the shank, which has a greater diameter than the shank and which on the side turned toward the welding end has a plurality of projections which have some distance from the shank and from each other and with their free ends form contact surfaces for a structural part. The contact surfaces preferably lie in a radial plane common to the axis.
In the fastener according to the invention, the flange rests not by an annular surface but only by the individual projections on the structural part held by the fastener. Owing to the distance between the projections, open passages are formed between the flange and the structural part. Through the passages, the space under the flange and within the aperture in the structural part, and hence the weld found therein, are accessible from the outside on a number of paths. As a result, an anticorrosive agent, for example in subsequent dip lacquering of the parts connected together by the fastener, lacquer is able to penetrate between the projections into the aperture lying under the fastener in the structural part and the surfaces of the structural parts and of the fastener found within the aperture, including weld, can be coated with a uniform protective layer. In this way, corrosion protection destroyed by welding on of the fastener in the region of the weld can be effectively restored.
The numerous passages between the projections in addition provide that in dip lacquering, the air present in the aperture under the fastener can easily escape, and no air bubbles remain by which uniform moistening of the structural parts and of the fastener with lacquer could be adversely affected.
In addition, the numerous passages between the projections allow excessive lacquer to flow off upon leaving the dipping bath without too great a quantity of lacquer remaining in the aperture. This ensures economical consumption of lacquer and promotes rapid drying of the parts after leaving the dipping bath.
In welding, gases forming can escape through the passages between the projections and protective gas can easily be carried to the weld. Owing to the distance of the projections from the shank of the fastener, an annular free space is formed between the projections and the shank. The free space prevents deflection of the arc upon welding and can accommodate any possible burr present on the edge of the aperture in the structural part to be fastened, so as to prevent irregular support of the flange on the structural part to be held.
According to an additional proposal of the invention, the flange has on the side turned toward the welding end an annular collar surrounding the shank at some distance, on which the projections are arranged. The collar may be arranged at the outer edge of the flange, and the region of the flange extending between the collar and the shank may be designed elastically deformable like a plate spring, so as to be able to produce an initial stressing force for mutual clamping of the parts connected together upon welding of the fastener with a force directed axially in the direction of the welding end.
According to another proposal of the invention, the flange, on the side turned toward the welding end, may have an annular collar surrounding the shank at some distance, which is divided by slots into a plurality of collar sections, which form the projections. In addition, the flange may be divided into a plurality of flange sections by a plurality of slots. The latter can serve to increase the elasticity of the flange and to enlarge the region of tolerance for obtaining a defined axial initial stress upon fastening of a structural part. The slots dividing the flange may extend up to the shank of the fastener.
According to another aspect of the invention, a joining method for connecting at least one structural part with a supporting part of metal with the use of a fastener according to the invention is proposed, in which the structural part is provided with an aperture that is greater than the cross section of the shank and smaller than the flange of the fastener, the structural part on one side of the supporting part is brought into and held in contact and the fastener, with the welding end of the shank extending through the aperture in the structural part, by means of an electric arc welding method, is welded to the supporting part in such a way that the projections of the flange with the contact surfaces abut a surface of the structural part surrounding the aperture.
The joining method according to the invention is simple and inexpensive to perform and is suitable for automatic assembly processes. It permits the use of welding methods for the connection of structural parts that consist of
materials not capable of being welded together. It is of advantage here that the structural parts for the fastening operation must be accessible from only one side and that the supporting part to be welded with the fastener needs no fastening opening that requires sealing. In the joining method according to the invention, the shank for welding is arranged centrally in the aperture of the structural part that is greater with respect to the shank, so that after welding an uninterrupted free space is present between the edge of the aperture and the shank. The free space serves for the accommodation of the weld bead that is formed and provides for a sufficiently great zone surrounding the weld on the supporting part for the formation of an overlap between the existing and the yet-to-be-applied corrosion protection. In addition, the free space provides for a sufficient distance of the aperture edge from the weld, so as to prevent damage of the structural part by the welding operation and to avoid deflection of the arc in welding. Welding of the fastener preferably takes place by means of electric drawn arc welding.
According to the joining method, it is additionally provided that the fastener under the influence of an axial force is welded to the supporting part in such a way that, after ending of the welding operation and cooling of the weld, the at least one structural part is firmly clamped by an axial clamping force between the projections of the flange and the supporting part. In this way, in addition to interlocking a force- and friction-locking connection is obtained between the structural part and the supporting part, which counteracts any relative movement of the structural part with respect to the supporting part transverse to the axis of the fastener. If the structural part consists of a sufficiently soft and flowable material, the projections on the flange can penetrate into the material and thereby produce additional interlocking, which prevents shifting or twisting of the structural part with respect to the supporting part.
For producing the required corrosion protection, the connection produced between the supporting part and the at least one structural part preferably is coated in a dip coating process with a liquid anticorrosive agent.
An advantageous joining connection produced according to the invention comprises a supporting part of metal, at least one structural part with an aperture, resting on one side of the supporting part, and a fastener according to the invention, which is welded by the welding end of the shank extending through the aperture in the structural part, which is greater than the cross section of the shank and smaller than the flange of the fastener, by means of an electric arc welding method to the supporting part, the projections of the flange resting with the contact surfaces on the surface of the structural part surrounding the aperture. The easy-to-produce joining connection is suitable for the connection of parts that cannot be welded together, for example for the fastening of structural parts of light metal or synthetic material to a supporting part of steel.
According to the invention, the joining connection may be designed so that the at least one structural part is firmly clamped with an axial clamping force between the projections of the flange and the supporting part. For obtaining effective corrosion protection, the joining connection including the weld within the aperture may be coated with an anticorrosive agent.
The invention will be explained in detail below with reference to exemplary embodiments shown in the drawing, wherein
Figure 1 shows a side view of a first embodiment of a fastener,
Figure 2, a cross section of the fastener of Figure 1 , Figure 3, a joining connection with a fastener according to the invention,
Figure 4, a view of the back side of a second embodiment of a fastener,
Figure 5, a view of the fastening side of the fastener of Figure 4 and
Figure 6, a view of an embodiment of a fastener with fastening stud.
The fastener 1 illustrated in Figures 1 and 2 has a shank 2 of substantially cylindrical form, extending along a central axis A. One end of the shank 2 is designed as welding end 3 and is provided with a flat truncated cone-shaped front surface 4 or some other suitable shape, for example a circular surface. On the other end of the shank 2 is formed a circular disk-shaped flange 5, the diameter of which is about twice as great as the diameter of the shank 2. The diameter of the flange 5 may alternatively be greater or smaller; the flange must in every case be greater than the aperture in the structural part to be fastened. The side of the flange 5 turned away from the shank 2 has a flat circular surface at right angles to the central axis A, which can serve for axial support of the fastener 1 in a welding jig. The flange 5 has on its outer edge an annular cylindrical collar 6, which extends axially from the flange 5 in the direction of the welding end 3. The flange 5 and the collar 6 jointly form an outer cylindrical surface 7, at which the fastener 1 can be grasped from outside with welding tongs and which can also serve as the contact surface for the transmission of electrical welding current.
Between the collar 6 and the shank 2 is present an annular free space 8 in the form of an annular groove. Owing to the free space 8, the flange 5 and the collar 6 obtain an advantageously great distance from the welding end 3, thus reducing the risk of arc deflection during the welding process. The welding process thereby becomes more stable and the quality of welds can be improved. The free space 8 may in addition accommodate a burr on the structural part to be fastened produced by punching, so that good support of the fastener on the structural part to be fastened can be obtained.
The free edge of the collar 6 is provided with a plurality of recesses 9 extending radially, which are arranged spaced at regular intervals apart. The
edge sections of the collar 6 lying between the recesses 9 form projections 10 arranged spaced apart, by which the fastener 1 can be supported on a structural part. The front surfaces of the projections 10 lie in a common plane, radial to the central axis A, which has some distance from the foremost truncated-cone surface of the welding end 3, which is greater by the excess length required for welding than the thickness of the structural part to be fastened with the fastener 1 or than the entire thickness of the plurality of structural parts to be fastened.
The excess length of the welding end required for welding depends upon the respective welding process and as a rule amounts to several tenths of a millimeter. Too great an excess length results in insufficient clamping of the structural part to be fastened; too small an excess length results in incomplete welding of the welding end and thus in insufficient fastening of the fastener.
Figure 3 shows a joining connection produced with the aid of a fastener 1 between a supporting part 12 and a structural part 14 resting on the latter. For production of the joining connection, the structural part 14 is provided with an aperture 15. The size of the aperture 15 is governed by the size of the fastener 1 and is to be selected so that the aperture 15 is greater than the diameter of the shank 2 and smaller than the diameter of the flange 5. The diameter of the aperture 15 preferably is selected as great as possible, in particular when the structural part 14 consists of a material that may be damaged by the high temperature in the welding zone. However, the diameter of the aperture 15 should if possible be smaller than the inside diameter of the collar 6, so that good contact of the projections 10 on the structural part 14 is ensured and in positioning of the fastener 1 centering deviations between the fastener 1 and the aperture 15 may be allowed.
For performance of the welding operation, the structural part 14 is placed on the supporting part 13 in the intended position and held in this position. Then the fastener 1 is brought forward by means of a known stud welding jig with the
welding end 3 extending through the aperture 15 to the supporting part 12 and, by production of an arc according to the known drawn arc stud welding method, is welded to the supporting part 12. The stud welding jig is in each instance controlled so that the movement of the fastener 1 upon immersion of the welding end 3 into the melt produced is limited by abutment of the projections 10 on the structural part 14. Subsequent shrinkage upon cooling of fastener 1 , weld joint 17 and supporting part 12 results in reduction of the distance between the flange 5 and the supporting part 12, so that the structural part 14 is clamped between the two. In the case of the joining connection produced in the way described, preexisting corrosion protection, when the supporting part 12 and the fastener 1 have as usual been provided therewith, is damaged in the vicinity of the weld joint by the welding operation. However, the required corrosion protection can be restored in simple fashion, since the space 16 surrounding the welding zone is accessible at many points through the recesses 9 between the projections 10. Thus, for example, in a dip coating process such as cathodic dip lacquering, coating material in the space 16 is able to penetrate under the fastener 1 and provide the entire inner surface of the space 16 with a protective coating. The size and number of the recesses 9 in addition ensure that excess material that has penetrated into the space 16 under the fastener 1 is able to flow out of the space 16 after leaving the dipping bath. In this way, the fastener 1 ensures restoration of corrosion protection in the region of the joining connection covered by the fastener 1 .
Figures 4 and 5 show a fastener 101 that has a cylindrical shank 102 with a welding end 103 and a circular disk-shaped flange 105 at the opposite end of the shank 102. The outer edge of the flange 105 is provided on the side turned toward the welding end 103 with a collar 106, which has a cylindrical outer surface 107. Between the collar 106 and the flange 105 is found an annular free space 108. The flange 105 and the collar 106 are divided into individual segments by a plurality of radial slots 1 1 1 , arranged spaced at
regular intervals apart. The slots 1 1 1 end at the surface of the shank 102. Owing to this division, the segments of the collar 106 form individual projections 1 10, by which the fastener 101 can be supported on a structural part. If a joining connection of the type shown in Figure 3 is produced with the fastener 101 , the space 16 under the flange 105 remains accessible under the flange 105 through the slots 1 1 1 and can be coated with an anticorrosive agent. The slots 1 1 1 in addition increase the elasticity of the flange 105, so that more exactly defined pressing-on of the structural part or parts can be obtained. In Figure 6 is shown a fastener 201 , which differs from the fastener 1 in that on the side of the flange 205 turned away from the welding end 203 in extension of the shank 202 is formed a stud 213, which is provided with an external thread. Additional structural parts may be fastened to the stud 213 after fastening of a structural part by welding of the fastener 201 to a supporting part with the aid of mechanical fastening means, such as nuts, clamps or the like.
Claims
Fastener (1 , 101 , 201 ) of metal having a shank (2, 102, 202), which extends in the direction of an axis and has a welding end (3, 103, 203), and having a flange (5, 105, 205) arranged on the shank at some distance from the welding end (3, 103, 203), which has a greater diameter than the shank (2, 102, 202), characterized in that the flange (5, 105, 205) on the side turned toward the welding end (3, 103, 203) has a plurality of projections (10, 1 10), which are arranged at some distance from the shank (2, 102, 202) and from each other and which with their free ends form contact surfaces for a structural part.
Fastener according to Claim 1 , characterized in that the flange (5, 105) on the side turned toward the welding end has an annular collar (6, 106) surrounding the shank (2, 102) at some distance, on which collar (6, 106) are arranged the projections (10, 1 10).
Fastener according to Claim 1 , characterized in that the flange (105) on the side turned toward the welding end has an annular collar (106) surrounding the shank (102) at some distance, which collar (106) is divided by slots (1 1 1 ) into a plurality of collar sections, which form the projections (1 10).
Fastener according to any of the preceding claims, characterized in that the flange (105) is divided by a plurality of slots (1 1 1 ) into a plurality of flange sections.
Fastener according to any of the preceding claims, characterized in that on the side of the flange (205) turned away from the welding end (203) in extension of the shank (202) a stud (213) is arranged for the fastening of an additional structural part.
6. Joining method for connecting at least one structural part (14) with a supporting part (12) of metal with the use of a fastener (1 ) according to any of the preceding claims, in which the structural part (14) is provided with an aperture (15) that is greater than the cross section of the shank (2) and smaller than the flange (5) of the fastener (1 ), the structural part
(14) is brought into contact with and held on one side of the supporting part (12) and the fastener (1 ), with the welding end (3) of the shank (2) extending through the aperture (15) in the structural part (14), is by means of an electric arc welding process welded to the supporting part (12) in such a way that the projections (10) of the flange (5) with the contact surfaces abut a surface of the structural part (14) surrounding the aperture (15).
7. Joining method according to Claim 6, characterized in that for welding the shank (2) is arranged centered in the aperture (15), so that an uninterrupted free space is present between the edge of the aperture
(15) and the shank (2).
8. Joining method according to either of Claims 6 or 7, characterized in that the fastener (1 ) is welded under the influence of an axial force to the supporting part (12) in such a way that after ending of the welding operation and cooling of the weld the at least one structural part (14) is clamped with an axial clamping force between the projections (10) of the flange (5) and the supporting part (12).
9. Joining method according to any of Claims 6 to 8, characterized in that welding of the fastener (1 ) takes place by means of electric drawn arc welding.
10. Joining method according to any of Claims 6 to 9, characterized in that the aperture (15) is cut by means of a cutting tool in such a way that a
burr can be formed only on the side of the structural part (14) turned away from the supporting part (12).
1 1 . Joining method according to any of Claims 6 to 10, characterized in that the connection produced between the supporting part (12) and the at least one structural part (14) is coated in an immersion coating method with a liquid anticorrosive agent.
12. Joining connection comprising a supporting part (12) of metal, at least one structural part (14) with an aperture (15) resting on one side of the supporting part (12) and a fastener (1 ) according to any of Claims 1 to 5, wherein the fastener (1 ), with the welding end (3) of the shank (2) extending through the aperture (15) in the structural part (14), which aperture (15) is greater than the cross section of the shank (2) and smaller than the flange (5), is welded by means of an electric arc welding method to the supporting part (12) and the projections (10) of the flange (5) rest by contact surfaces on a surface of the structural part
(14) surrounding the aperture (15).
13. Joining connection according to Claim 12, characterized in that the at least one structural part (14) is firmly clamped by an axial clamping force between the projections (10) of the flange (5) and the supporting part (12).
14. Joining connection according to either of Claims 12 or 13, characterized in that it, including the weld within the aperture (15), is coated with an anticorrosive agent.
15. Joining connection according to any of Claims 12 to 14, characterized in that the at least one structural part (14) consists of light metal or synthetic material.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE201110055044 DE102011055044A1 (en) | 2011-11-04 | 2011-11-04 | Fastening element for welding, joining method and joint connection |
| PCT/EP2012/071696 WO2013064618A1 (en) | 2011-11-04 | 2012-11-02 | Fastener for welding having a shank and a flange with projections, joining method and joining connection using such fastener |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP2773479A1 true EP2773479A1 (en) | 2014-09-10 |
Family
ID=47178623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP12786897.4A Withdrawn EP2773479A1 (en) | 2011-11-04 | 2012-11-02 | Fastener for welding having a shank and a flange with projections, joining method and joining connection using such fastener |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2773479A1 (en) |
| CN (1) | CN103917324A (en) |
| DE (1) | DE102011055044A1 (en) |
| WO (1) | WO2013064618A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104249215B (en) | 2013-06-26 | 2019-04-02 | 奥科宁克公司 | Resistance welding fastener, device and method |
| EP2860407B1 (en) * | 2013-10-08 | 2017-01-18 | MAGNA STEYR Fahrzeugtechnik AG & Co KG | Structured component |
| DE102013225048A1 (en) * | 2013-12-05 | 2015-06-11 | Bayerische Motoren Werke Aktiengesellschaft | Bolt element and welding method for connecting this bolt element with a workpiece |
| US10903587B2 (en) | 2014-02-03 | 2021-01-26 | Howmet Aerospace Inc. | Resistance welding fastener, apparatus and methods |
| DE102014214932A1 (en) * | 2014-07-30 | 2016-02-04 | Bayerische Motoren Werke Aktiengesellschaft | Welding studs for stud ignition welding |
| EP3936272A1 (en) | 2014-12-15 | 2022-01-12 | Howmet Aerospace Inc. | Resistance welding fastener |
| JP6260592B2 (en) * | 2015-07-24 | 2018-01-17 | トヨタ自動車株式会社 | Dissimilar material joining structure and manufacturing method of dissimilar material joined body |
| KR102319841B1 (en) | 2015-09-16 | 2021-10-29 | 하우매트 에어로스페이스 인코포레이티드 | Rivet feeding apparatus |
| US10593034B2 (en) | 2016-03-25 | 2020-03-17 | Arconic Inc. | Resistance welding fasteners, apparatus and methods for joining dissimilar materials and assessing joints made thereby |
| EP3433046A2 (en) * | 2016-03-25 | 2019-01-30 | Arconic Inc. | Resistance welding fasteners, joints and methods for joining dissimilar materials |
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| EP3928909A1 (en) * | 2017-01-30 | 2021-12-29 | Newfrey LLC | Welding element and welding method for connecting a welding element with a workpiece |
| EP3466591A1 (en) * | 2017-10-09 | 2019-04-10 | HILTI Aktiengesellschaft | Bolt and fastening arrangement |
| EP3466589A1 (en) * | 2017-10-09 | 2019-04-10 | HILTI Aktiengesellschaft | Fixing method |
| DE102019102234A1 (en) * | 2019-01-29 | 2020-07-30 | Brandenburgische Technische Universität Cottbus-Senftenberg | Method for mechanically connecting a first workpiece to a second, electrically conductive workpiece |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29718724U1 (en) * | 1997-10-09 | 1998-09-17 | Blechformwerke Bernsbach Gmbh | Components connection |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB370948A (en) * | 1930-10-08 | 1932-04-08 | Hall & Kay Ltd | Improvements in or relating to metal sockets, bushes, ferrules, rivets and the like |
| DE1099663B (en) * | 1959-07-07 | 1961-02-16 | Standard Elektrik Lorenz Ag | Arrangement for resistance welding connection of painted and unpainted metal parts by means of a rivet-like welding pin |
| US3245449A (en) * | 1964-04-09 | 1966-04-12 | Nat Lock Co | Speaker mounting screw |
| GB1075969A (en) | 1964-11-27 | 1967-07-19 | Crompton Parkinson Ltd | Improvements relating to electric arc stud welding |
| US3774009A (en) | 1970-07-06 | 1973-11-20 | Empire Stove Co | Fastener for securing sheet material |
| JPS4925351A (en) * | 1972-07-03 | 1974-03-06 | ||
| DE102007036416A1 (en) * | 2007-08-02 | 2009-02-05 | Daimler Ag | Auxiliary joining element made of steel for connecting an aluminum plate with a steel part by resistance welding, comprises a shaft guidable through the aluminum plate and weldable at its free end with the steel-part, and a head |
| JP5291516B2 (en) * | 2009-04-01 | 2013-09-18 | 平井工作株式会社 | Damper fixing jig and manufacturing method thereof |
-
2011
- 2011-11-04 DE DE201110055044 patent/DE102011055044A1/en not_active Withdrawn
-
2012
- 2012-11-02 WO PCT/EP2012/071696 patent/WO2013064618A1/en active Application Filing
- 2012-11-02 CN CN201280054046.0A patent/CN103917324A/en active Pending
- 2012-11-02 EP EP12786897.4A patent/EP2773479A1/en not_active Withdrawn
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29718724U1 (en) * | 1997-10-09 | 1998-09-17 | Blechformwerke Bernsbach Gmbh | Components connection |
Non-Patent Citations (1)
| Title |
|---|
| See also references of WO2013064618A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013064618A1 (en) | 2013-05-10 |
| CN103917324A (en) | 2014-07-09 |
| DE102011055044A1 (en) | 2013-05-08 |
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