JP5148074B2 - Member and part assembly that can be attached to sheet metal part by riveting, and method for manufacturing the part assembly - Google Patents

Description

  The present invention relates to a member that can be attached to a sheet metal portion by riveting, and more particularly, a member in the form of a centering bolt having a shaft portion and a head portion, the head portion facing the sheet metal portion. And at least a generally ring-shaped ring recess, which is coupled radially inward to the cylindrical section of the head, the cylindrical section of the head being a shaft and a shaft in the region of the head. Combined with the surrounding tubular rivet part, the cylindrical section of the head is arranged in a ring-shaped contact surface arranged radially outward of the ring recess and at least radially outwardly via a generally conical wall Combines with ring-shaped contact surface. Furthermore, the present invention relates to a component assembly including a sheet metal portion to which the above member is attached, and further to a method for attaching the member to the sheet metal.

  The components, component assemblies and methods mentioned at the outset are known from FIGS. 8 and 9 of EP-A-0539793. In the method disclosed herein, the sheet metal portion is designed to have a conical ridge in the attachment region, the bolt shaft is provided with a thread, and the ring-shaped rivet section is a conical ridge. Inserted from the side protruding from the center, the upper area of the conical ridge is pressed flat during the riveting process, and the rivet bead is under the sheet metal part, i.e. the sheet metal part. , Located in the ring recess on the side remote from the head of the bolt member, the ring recess still present even after partially pressing the flat part of the conical ridge.

  In the illustrated embodiment, there are a plurality of protrusions (noses) that are evenly distributed in the circumferential direction to resist rotation and provide safety, in the region where the head ring recess moves into the ring-shaped rivet, It has a triangular shape when viewed from the side, and this protrusion provides safety by resisting rotation that expands in a radial zone that spans only a portion of the width of the ring recess.

  However, this type of bolt member has not been actually used. One reason is that, on the one hand, the shape of the sheet metal part is prevented from being reshaped, rather than the protrusions resisting rotation, and on the other hand, the reinforced ring-shaped rivet part prevents the beading part. Is found to be difficult to bead. Moreover, this type of design can lead to undesirable deformation of the sheet metal. In this type of member, a rivet bead is formed, and the rivet bead is pressed by an adjusting round die that re-forms the sheet metal portion, so that the rivet bead presses the sheet metal. Therefore, the formed rivet bead has to press the sheet metal part against the protruding part that resists and fixes the rotation, and presses the protruding part that resists and fixes the rotation into the sheet metal part. For this reason, it is difficult to put it to practical use, the sheet metal is lifted by the protruding portion that resists rotation and is fixed, and the formation of the rivet bead fails. Can be pressed.

  A series of applications are known in the art in which a member attached to a sheet metal part by riveting functions as a centering member. In this case, the member has a part of the axial zone, which attaches the member to be riveted to the sheet metal part and into the holes of other parts that are precisely placed against the sheet metal part. Fits relatively tightly. In this case, the centering member simply has a centering function, and other parts are screwed to the sheet metal part that receives the action of another member, or the centering member attaches other parts to the sheet metal part. Threads can be provided at the same time that function to attach to. Therefore, the member has not only a centering function but also a mounting function.

  Such centering members, i.e. centering and fixing members, are parts of the profile Fairbin Tunks Tech G.M. Which is disclosed, for example, in German Patent No. 344476.9. In the case of the SBF bolt member, the head end away from the shaft portion is designed to be rivet-connected to the sheet metal portion.

  Such a centering member having an arbitrary fixing function has been shown to be practical, but for mounting the member on the sheet metal part of the head region, a relatively large sheet metal part and head Reshaping is necessary. Therefore, in the case of a member having a shaft diameter of 12 mm or more, a relatively large reshaping force is required to obtain a necessary rivet connection to the sheet metal portion. In many cases, the sheet metal portion is very thin and the shaft diameter of the centering member is large.

  Similar problems arise with other fixing members that can be used for centering purposes.

  Other members that can be used as centering members are disclosed in WO 02/077468. This member is a functional member having a ring-shaped contact surface and a tubular rivet section spaced from the head on the contact surface side of the head, concentrically with respect to the tubular rivet section and within the end thereof A radially tubular guide section is disposed, a ring gap is provided between the guide section and the rivet section, and the guide section projects beyond the free end of the rivet section.

  The free end of the wall of the tubular rivet section is rounded on both the radially outer and radially inner corners when viewed from an axial cross-section, e.g., semi-circular or at the tip of an arrow It has a similar shape and helps to form rivet beads. The guide section is formed as a penetrating section, and has a ring-shaped cutting edge at an end portion away from the contact surface, whereby the member can be inserted into the sheet metal portion in a self-penetrating manner. This member is formed as a nut member enabling a self-penetrating function. However, this member is not provided with a ring recess on the ring-shaped contact surface, and the protruding portion (nose) that resists and fixes the rotation has the shape of a raised portion extending in the radial direction, or a rib shape. It is formed on the ring-shaped contact surface.

  The object of the present invention is to provide a member of the kind mentioned at the outset which can have only a centering function or a centering and mounting function, which is necessary for mounting on the sheet metal part. The force is maintained within the allowable limit even if the shaft diameter is 12 mm or more, and there is no risk of undesired deformation of the sheet metal part, and one member can be used for sheet metal parts of various thicknesses. Good rotation resistance can be obtained.

  In order to achieve this object, the component according to the invention comprises at least one partial recess, particularly preferably a plurality of evenly distributed partial recesses, in the conical wall of the ring recess and / or in an optional ring recess. It is provided in the ring-shaped base surface.

  In particular, by providing a profile that provides a locking force against rotation in the form of a plurality of evenly distributed recesses in the conical wall of the partial recess or ring recess and / or in the tubular base surface of the ring recess If the metal sheet is thick, its profile that provides a locking force against rotation is disturbed while the member is attached to the sheet metal part, which is a problem to be overcome with regard to forming the sheet metal part or reshaping the rivet section Such a situation can be prevented. Furthermore, such recesses that provide anti-rotation do not cause undesirable deformation of the sheet metal part, which is particularly important in the case of centering members. In addition, the recess that provides such rotation prevention ensures proper rotation prevention, and the rivet bead is located in the lower part of the sheet metal part, that is, on the side away from the head of the member of the sheet metal part. Therefore, a flat mounting surface is provided at the lower part of the sheet metal part. As a result, the guide section of the member providing the centering can be provided directly on the lower surface of the sheet metal, that is, on the free end surface of the rivet bead on the shaft portion of the member. Ideal centering, i.e. placement is ensured.

  Furthermore, the members according to the invention can use sheet metal of different thicknesses in one embodiment over a relatively wide range. For example, a sheet metal thickness of 0.6 to 3.5 mm can be used without using a rivet bead that protrudes from the lower surface of the sheet metal part, which causes difficulties during the installation of additional parts. It can be covered with only two different members so as to be located in the ring recess on the lower side of the part. For example, in a first embodiment having a short rivet section, a sheet metal having a thickness of 0.6 to 1.5 mm can be covered, and a second embodiment having a long rivet section is for example Can be used for sheet metal having a thickness of 1.5 to 3.5 mm. In particular, a member having a somewhat short rivet section is effective when used for a sheet metal having a thickness of 1.25 to 3.0 mm, which is a range frequently found in a centering bolt. The present invention is not limited to members having an axial diameter of approximately 12 mm, but rather may be selected from a wider range, for example, but not limited to, 4 mm to 38 mm. Let me mention that there is.

  The member of the invention also has the advantage that a so-called clamping hole rivet tightening process according to the disclosure of EP 0539793 B1 can be carried out to obtain the desired tightening between the sheet metal part and the member. Can do. That is, during the riveting process, it can be used to flatten (partially) the conical ridges to reduce the centering opening diameter of the sheet metal part. Therefore, the rim portion of the opening enters the contact portion of the member with the sheet metal in the region above the rivet section or in the rivet section region, while the rivet section is flipped radially outward by the riveting process, and optionally Expands radially.

  However, it is not necessary to use a clamping hole riveting process, and during beading across the rivet section, the adjustment round die sufficiently crushes the sheet metal between itself and the member, so that the sheet metal material is partially recessed by tightening ( In addition to flowing into the plurality of recesses), it is pushed radially inward, so that the shape of the conical raised portion can be matched to the shape of the ring recess on the lower surface of the head of the member as desired.

  Even when the fixing member has only a centering function, the method of attaching the member to the sheet metal part can be reliably executed in such a process requiring reliability, so that the rotation preventing part in the form of one or more recesses is provided. Is preferably provided. That is, after attaching the member to the sheet metal part with an appropriate support of the sheet metal part, the member is twisted to remove it from the sheet metal part or to loosen the member in the sheet metal part, and torque is given to the member. be able to. The level of torque generated is an indicator of how tightly the member is attached to the sheet metal and can be used to ensure quality or to confirm quality.

  In the case of a member having a fixing function, in order to provide an attachment function, that is, while a nut is attached to a shaft portion of a member that becomes a bolt member, or while a screw is screwed into a hollow shaft portion of a member formed as a nut member, rotation prevention In any case, an anti-rotation fixing part is necessary to obtain the effect. When the member is formed as a nut member, a thread can be provided on the head, the hollow shaft, and / or the attachment on the side away from the shaft of the head. In the latter case, the mounting section preferably has an outer diameter that is smaller than the head of the member, thereby providing a ring-shaped contact pressure surface, so that the fixed section is deformed by the generated force. Without using it, it is possible to reliably press the member into the sheet metal portion and perform the riveting process. In realizing the member as a nut member, the member could be self-penetrating.

  Preferred embodiments of the member according to the invention can be found in claims 1-11.

  In the component assembly of the present invention, the sheet metal portion has a ring-like raised shape in the region where the sheet metal portion is received in the ring recess, and the material of the sheet metal portion is disposed in the (respective) partial recess. And the sheet metal part has a ring recess in which a rivet section inverted to a rivet bead is arranged on a side away from the ring recess, and the rivet bead on the side away from the head is a rivet bead. It does not protrude at least substantially beyond the sheet metal portion side in the surrounding area, and preferably slightly recedes with respect to the sheet metal portion.

  Preferred component assembly embodiments can be found in claims 13 and 14.

  Finally, a method for attaching a member to a sheet metal part to form a component assembly according to the invention preferably aligns the member substantially with the shape of the ring recess, or preferably from a conical wall part. Inserting into a pre-drilled sheet metal part in the hole area to form a ridge having an inclined conical shape, and a central hole in which the sheet metal around the rivet section receives the shaft part and the ring-like ridge part Alternatively, a die button means having and having a central bore is formed in the (respectively) partial recess, and during the formation of the rivet bead, a rivet section is formed in the ring recess formed on the lower surface of the sheet metal part. Placed or pressurized.

  In this embodiment, a ring-like ridge with an adjusting round die is formed at least with the ring end at its free end, and the ring end is joined to a circular surface arranged radially outward so that the rivet section is connected to the rivet bead. And reshaped. In this case, the ring end has a smaller diameter in the ring tip region at the free end of the rivet section than the tubular rivet section, so that during the riveting process, the ring end deflects the rivet bead radially outward. Can do.

  The invention is explained in more detail below with reference to the drawings.

  Referring to FIGS. 1A to 1C and FIGS. 2A to 2B, a member 12 attached to the sheet metal portion 10 by riveting is shown. The member 12 has the form of a centering member having a shaft portion 14 and a head portion 16. The head has at least a generally ring-shaped recess 20 on its side 18 remote from the sheet metal part 10, which is coupled radially inward with the cylindrical section 21 of the head 16, and In the region of the head 16, i.e. just below the head 16, it is connected to a shaft 14 and a tubular rivet section 22 surrounding the shaft 14. The ring recess 20 is located in a ring-shaped contact surface 24 provided radially outward of the ring recess or in a radial outside of the contact surface formed of the tubular ring segment 24 ′, and radiates at least through a substantially conical wall 23. Coupling with the contact surface 24 or 24 'on the outside in the direction. The conical wall 23 has a taper angle of approximately 33 degrees with respect to the horizontal plane, and this angle can be selected within the range of 20 degrees to 45 degrees, but is not limited thereto.

In this embodiment, in the radial conical wall, the ring recess 20 has a curved ring-shaped base surface 26, at least half of which is common with the radially outer surface 28 of the cylindrical section 21. In this example, the base surface 26, which has a curve in the radial cross section, comprises a flat section 28 that is substantially perpendicular to the central longitudinal axis 30 of the member 12. However, by omitting the flat surface or expanding the radial width of the flat surface 28, the cone section 23 and / or the cylindrical section 21 above the rivet section 22 (not shown) can be directly or relatively It is also possible to couple via a small diameter. The base surface can also be formed separately. That is, a conical wall having a relatively steep slope can be formed in the cylindrical section 21 above the rivet section 22. (It should be understood that "upper" is relative to the position of the member 12 shown, not as a geometric definition.)
At least one partial recess 32 and preferably a plurality of evenly distributed partial recesses 32 are provided in the conical wall of the ring recess 20 and / or optionally in the base surface 26 of the ring recess 20. .

  The one or more partial recesses 32 are elongated and have a curved shape, and in this embodiment, the deformation from the side wall of each partial recess becomes a ring recess 20 through a sharp end. . However, these deformation parts may have a curve.

  Each of the one or more partial recesses 32 is arranged essentially radially, and in this embodiment is made to extend to the ring-shaped contact surface, whereby the ring-shaped contact surface 24 is made into a circular ring segment 24 '. Is subdivided into This can be particularly confirmed by reference numerals 24 ', 32', 24 on the left side of FIG. 1B. For this reason, the “ring-shaped contact surface” should be understood to include a contact surface composed of circular ring segments and to be blocked by a partial recess. However, the partial recess may be shortened so as not to reach the contact surface 24 so that the contact surface is not subdivided.

  In this embodiment, the partial recess subdivides the base surface 26 of the ring recess 23 in exactly the same way as subdividing the ring-shaped contact surface 24. When the base surface 26 is referred to as a ring shape, the base surface 26 is understood to include a base surface that is blocked by one partial recess or a plurality of partial recesses.

  In this example, six equally distributed partial recesses are provided. However, a different number of recesses may be provided, and 1 to 12 partial recesses may be provided, and a larger number of cases may be formed by forming a smaller or thinner and shallower one.

  As can be seen from the figure, particularly FIG. 1B, the free end 34 of the wall of the tubular rivet is rounded both radially outward and radially inward when viewed from a radial section (as shown on the right side of FIG. 1B). And the tip of the ring at the lower end of the rivet section is accurately generated at the position indicated by reference numeral 34.

  In the embodiment of FIGS. 1A-1C and FIGS. 2A, 2B, the shaft 14 is not hollow or is formed as a centering portion. Instead of forming the member as a centering member, it can also be formed as a centering and mounting member according to each of FIGS. 3A-3C and FIGS. 4A and 4B.

  In the description of the embodiment of FIGS. 3A-3C and FIGS. 4A and 4B, the components having the same shape and / or the same function in the embodiments of FIGS. 1A-1C, 2A and 2B are the same. It should be understood that the same description is made for corresponding parts or functions unless indicated otherwise by the reference numerals. Conversely, the descriptions of FIGS. 3A-3C, 4A, and 4B may be applied to the embodiments of FIGS. 1A-1C, 2A, and 2B unless otherwise noted. For the sake of simplicity, the description will not be repeated. In the embodiment of FIGS. 3A-3C and 4A-4B, the shank 14 is provided with a thread 14 '.

  The thread 14 'is coupled to a male thread thread relief 14 "adjacent to the free end region of the tubular rivet section and a cylindrical section 40 having a diameter equal to or greater than the outer diameter of the male thread. The cylindrical section 40 that forms the actual centering section essentially appears when the member 12 is attached to the sheet metal part 10 as shown in FIG. 4B. In the embodiment of FIGS. 1A-1C, 2A and 2B, the inverted rivet section, ie, the entire shaft 14 under the rivet bead 42 or a portion of the shaft 14 just below the rivet bead 42 Can constitute the centering section 40 and in some cases the remainder can be stepped, i.e. have a smaller diameter for pre-centering.

  1A to 1C and FIGS. 3A to 3C, the member can be variously changed. For example, the head can have a functional section on the opposite side of the shank, such as an external thread, an internal thread, another shank with a clip mount, or in the form of a guide. Further alternative shafts 14 may be made longer and act as guides for pins or shafts or provided with internal threads.

  A method of attaching the member 12 of FIGS. 1A to 1C to the sheet metal portion will be described below with reference to FIGS. 2A and 2B. It should be noted that the same description applies with the same reference numerals when attaching the member 12 of FIGS. 3A to 3C to the sheet metal part 10 of FIGS. 4A and 4B. Accordingly, the description of the method according to FIGS. 2A and 2B will not be repeated with respect to FIGS. 4A and 4B.

  As apparent from FIG. 2A (FIG. 4A), in the sheet metal part 10 in which the hole 12 is formed in advance, the member 12 is formed up to the raised part 52 substantially matched with the shape of the ring recess 23. Has been inserted. In this example, the raised portion 52 of the sheet metal portion is flattened at the top 53 and the hole 50 is substantially penetrated so that the side wall 53 of the hole is parallel to the longitudinal axis 30. It extends. However, a given flat is not essential, and the conical ridge 52 can be formed without having a flattened top 53. The punching of the hole 50 can also be combined simultaneously with the punching to form the hole 50, so that the hole 50 extends conically and is deflected upward in FIG. 2A. As a further alternative, the ridge may have a conical shape with a steeper slope than the conical wall 24 of the ring recess 23.

  The member is attached to the sheet metal part by a known method using a press, that is, a C-shaped frame and an adjusting round die means. In this attachment, for example, pressure is applied to the head of the member while supporting the sheet metal portion with the adjustment round die. By means of an adjusting round die (not shown), the member has a central section or central bore that receives the shaft and ring-shaped ridges, the ring-shaped ridges surrounding the section or bore and a sheet around the rivet section 22 The metal part material is formed in one or more partial recesses 32. The rivet section 22 is disposed in a ring recess 54 formed on the lower surface of the sheet metal portion 10 during the formation of the rivet bead 42.

  For the purposes of the present invention, it is preferred to form the ring-shaped ridge with an adjusting round die so as to have a ring end at its free end, the ring end being inserted in a rounded surface arranged radially outwardly. Is done. The diameter of the ring end is selected from a diameter that is somewhat smaller than the tip of the ring at the free end of the rivet section 22, so that the rivet section 22 faces radially outward during the riveting process with the ring end and the rounded surface. And are formed on the rivet beads 42. In this case, the sheet metal part material is crushed by the force generated between the head 16 of the member and the adjustment round die, and the formed rivet beads and the adjustment round die region radially outward of the rivet beads form the sheet metal part material. Flows into the partial recess (es) 32 where it forms a raised portion in the sheet metal portion that resists rotation to form an interlocking connection between the member and the sheet metal portion 10. Give a fixed effect. By forming the bead of the rivet section, the sheet metal material is clamped in a radial groove 56 formed between the ring recess 20 and the rivet bead 42, so that the member is fixed in the sheet metal portion by the material in the axial direction. . Further, the sheet metal material is pressed tightly against the shaft 14 of the member in the information area of the rivet bead 42 by a crushing force (and a consequent expansion of the rivet section). Thereby, a high frictional force is generated in the hole, and the member is firmly arranged, so that the resistance to rotation is increased. Also, the sheet metal material is placed in a compressed state so that there is no risk of fatigue cracks occurring during dynamic operation. This effect can be further increased when the sheet metal conical ridge is partially flattened, i.e. when using a clamping or riveting process according to EP-A-0539793. it can.

  According to the method of the present invention, a component assembly including a sheet metal portion 10 and a member 12 attached thereto is produced. The sheet metal portion 10 has a ring-shaped raised portion 52 ′ in the region of the ring recess 20. Received to form a fit within the recess 20, the sheet metal portion material is disposed within each of the one or more recesses 32. Further, a ring recess 60 is present on the side surface 58 of the sheet metal portion 10 away from the ring recess 22, and the ring recess 60 has a rivet section that is inverted to form a bead on the rivet bead 42. The side portion of the rivet bead 42 away from the head portion 16 does not protrude at least substantially beyond the side surface 58 of the sheet metal portion in the peripheral region of the rivet bead and slightly recedes, for example, 0.02 mm from the side surface. Preferably it is.

  The use of the component assembly of FIG. 4B with additional components 70 is shown in FIG. The part has a hole 72.

  The inner diameter of the hole 72 is at least substantially the same as the outer diameter of the shank 14 in the rivet bead 42, i.e. in the central section 40, and the part is centered in this region of the shank.

  The component 70 can be secured to the sheet metal portion 10 by a fixing member 74 attached to the shaft portion 14 of the member, for example, with an optional intermediate washer 76 and a nut 74 on the shaft portion having a male thread 14 '. It is held by screwing it on the screw thread 14 '. As an alternative to this, the shaft part can be formed as a tubular part (not shown) having an internal thread, and the component 70 can be screwed into the internal thread and fixed with a screw.

  For completeness, it should be noted that the members of the present invention do not necessarily have a centering function and may simply have a locking function, and therefore need not be centering members or centering bolts. .

  In all embodiments, for example, all of the material may be a member material such as a 35B2 alloy such that it has ISO Class 8 strength values. The fixing member formed in such a manner is also suitable for a commercially available steel material, aluminum, or an alloy thereof for drawing a high-quality sheet metal portion. In addition, the aluminum alloy has particularly high strength, and for example, AlMg5 can be used for the member. Further, a member of high strength magnesium alloy such as AM50 is also possible.

The perspective view seen from the lower side of the head which shows the member which has only the centering function by this invention. FIG. 1B is a partial cross-sectional view of FIG. 1A in the longitudinal direction showing a member having only a centering function according to the present invention. The top view which looked at the head of the member of FIG. 1A and FIG. 1B which looked at the member which has only the centering function by this invention from the downward side. FIG. 2 shows the member in a state prior to insertion through a central opening with a conical ridge showing the attachment of the member according to the invention of FIGS. 1A to 1C to a sheet metal part. 1A is a partial cross-sectional view showing attachment of a member according to the present invention of FIGS. 1A to 1C to a sheet metal part. FIG. The figure which shows the change embodiment of the form of the centering member which corresponds to FIG. 1A, but has a fixing function. The figure which shows the change embodiment of the form of the centering member which corresponds to FIG. 1B, but has a fixing function. The figure which shows the change embodiment of the form of the centering member which corresponds to FIG. 1C but has a fixing function. FIG. 3 is a view corresponding to FIG. 2A, but showing attachment of the bolt member according to the present invention of FIGS. 3A to 3C to the sheet metal portion. FIG. 3 is a view corresponding to FIG. 2B, but showing attachment of the bolt member according to the present invention of FIGS. 3A to 3C to the sheet metal part. The figure which shows the state which screws and attaches components to the component assembly shown in FIG. 4B.

Claims (20)

In the member (12) that can be attached to the sheet metal part (10) by riveting , the member comprises a shaft part (14) , a tubular rivet section (22) and a head part (16) surrounding the shaft part. Yes, and
The head has at least a generally ring-shaped ring recess (20) on its side (18) facing the sheet metal part, the ring recess (20) being radially inwardly the cylindrical section of the head (16). (21)
A cylindrical section (21) is coupled to the shank (14) and the tubular rivet section (22), the tubular rivet section (22) surrounds the shank (14) in the region of the head (16),
The cylindrical section (21) is provided in a ring-shaped contact surface (24 , 2 4 ') arranged on the radially outer side thereof, and at least the ring-shaped contact surface via a generally conical wall (23). Which is combined with
A plurality of partial recess (32) is provided on at least one of the ring-conical wall (23) in及beauty ring-shaped base surface of the re Ngurisesu recess (26) in,
Regions of radial inner shaft portion (14) of the rivet section of the tubular (22), characterized that you form a centering section adjacent (40) to the cylindrical section (21), the riveting A member (12) attachable to the sheet metal part (10). 2. A member according to claim 1, characterized in that the plurality of partial recesses (32) are evenly distributed around the ring recess . The ring recess (20), the radiation in the direction inward, before Symbol cylindrical section annular base surface to bind to radially outer surface (21) of said conical wall (23) (2 6, 28) have a, the base surface, characterized in that one substantially perpendicular, or the cross section is curved with respect to the longitudinal axis of at least the member, according to claim 1 or 2 Members. Each of the front Stories section partial recess (32), from its side wall, that binds to the surface of the ring recess slope with steep or round (20), and having a shape with a rounded elongated corner The member according to any one of claims 1 to 3. Each of the front Stories section partial recess (32) (32), characterized in that disposed on the radial plane A member according to any one of claims 1 to 4. The rivet section of the tubular (22), wherein the Turkey are spaced apart from one spaced by a gap of a radial direction from the shaft portion (14) in the radial direction or the centering section (40), wherein Item 6. The member according to any one of Items 1 to 5. A member according to claim 6, characterized in that the tubular rivet section (22) is in contact with the centering section (40) radially inward of the tubular rivet section (22). The free end of the wall of the rivet section (22) of said tubular (34), when viewed in the axial section, characterized in that it has a rounded in both the radially inward and radially outward, wherein Item 8. The member according to any one of Items 1 to 7 . 9. Member according to claim 8, characterized in that the free end (34) has a semi-circular shape or a shape resembling an arrowhead. Characterized in that it is formed as one of the centering portion of the shaft portion (14) is a solid centering section or tubular, member according to any one of claims 1 to 9. And having the shaft portion (14) screw mountain (14 '), member according to any one of claims 1 to 10. The thread (14 ') has a thread relief adjacent to the region of the free end of the tubular rivet section, the thread relief being the same as the outer diameter of the thread (14') 12. Member according to claim 11 , characterized in that it is joined with a cylindrical section (40) having a diameter of or larger than that. The head (16), at the side of the shaft portion (14) opposite and having a function section member according to any one of claims 1 to 12. 14. A member according to claim 13, wherein the functional section comprises one of a male thread, a female thread, or another shaft having a clip mount, a guide and a centering part. A component assembly having a sheet metal part (10) and a member according to any of claims 1 to 14,
The sheet metal portion (10) has a ring-shaped ridge forming portion ( 52 ) received in the recess (20) in the region of the ring recess (20),
The material of the sheet metal part is disposed in each of the one or more partial recesses (32), and the sheet metal part has a rivet bead on the side surface (58) remote from the ring recess (20). The rivet section (22) inverted to (42) has a ring recess (60) disposed therein, wherein the side of the rivet bead away from the head (16) is the periphery of the rivet bead in the area, it said that they are not protrude beyond the side surface (58) of the sheet metal part section member assembly. Before SL has a member (12) said holes provided for the shank (14) of (72), and, in part (70) in contact with the sheet metal part (10),
The inner diameter of the hole (72) is at least substantially the same as the outer diameter of the shank in the region of the centering section (40), i.e. the rivet bead (42), and the part is that region of the shank. 16. A component assembly according to claim 15, wherein the component assembly is centered by the assembly. Said component (70) is, depending on the fixed member to which the attached to the shaft portion (14) of said member (74), characterized in that it is retained in the sheet metal part (10), component of claim 16 Assembly. The fixing member (74) attached to the shaft portion (14) is formed as a tubular member having a nut and a female screw screwed to the screw at the shaft portion formed to have a thread (14 ') of a male screw. The component assembly according to claim 17, wherein the component assembly can be one of nuts screwed to a female screw in the shaft portion. A method for attaching the member according to any one of claims 1 to 14 to a sheet metal part (10) to produce the component assembly according to any of claims 15 to 18 .
Said member is provided with a pre-bore, in the region of the holes of its, the ring recess (20) shaped and or the conical be preformed so as to form at least ridges substantially aligned (52) of Inserting into a sheet metal part (10) having a conical shape steeper than the wall (23);
The sheet metal material around the rivet section (22) is adjusted by an adjustment round die having a centering recess or centering bore for receiving the shaft portion, and a ring-shaped ridge surrounding the centering recess or centering bore. The rivet section (22) is formed in the lower surface of the sheet metal part and into the ring recess (20) during the formation of the one or more partial recesses and the formation of the rivet beads (42). A method characterized by arranging or pressing. The ring-shaped ridge of the adjustment round die has at least a substantially rounded end, and is free to couple with a surface formed to have a roundness provided radially outward of the rounded end. 20. Method according to claim 19 , characterized in that the rivet section (22) is formed into the rivet bead (42) by being formed at the end.

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