Blind rivet and fastening arrangement with a blind rivet
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F16B-013/04
F16B-019/10
출원번호
US-0702721
(2011-05-17)
등록번호
US-9334893
(2016-05-10)
우선권정보
DE-10 2010 017 296 (2010-06-08)
국제출원번호
PCT/EP2011/057927
(2011-05-17)
§371/§102 date
20130218
(20130218)
국제공개번호
WO2011/154224
(2011-12-15)
발명자
/ 주소
Schneider, Stephan
Jonuscheit, Bernd
출원인 / 주소
NEWFREY LLC
대리인 / 주소
Harness, Dickey & Pierce, P.L.C.
인용정보
피인용 횟수 :
0인용 특허 :
109
초록▼
A blind rivet for joining components made of plastic has a hollow rivet body with an elongated shank and a flange and, located in the bore of the rivet body, a mandrel with a mandrel shank, a drawing end, and a mandrel head. The shank of the rivet body has a first section adjoining the flange and a
A blind rivet for joining components made of plastic has a hollow rivet body with an elongated shank and a flange and, located in the bore of the rivet body, a mandrel with a mandrel shank, a drawing end, and a mandrel head. The shank of the rivet body has a first section adjoining the flange and a second section adjacent thereto. The second section is designed to form a flange that lies flat against the component located on the inaccessible side. The strength of the first section is increased with respect to the strength of the second section in such a manner that the outside diameter of the first section does not increase or increases only slightly during setting of the blind rivet.
대표청구항▼
1. A blind rivet assembly, the blind rivet assembly comprising a hollow rivet body including an elongated shank that extends coaxially to a longitudinal center axis of the blind rivet and has a bore, a flange extending radially at one end of the shank, and, at the opposite end of the shank, a foot e
1. A blind rivet assembly, the blind rivet assembly comprising a hollow rivet body including an elongated shank that extends coaxially to a longitudinal center axis of the blind rivet and has a bore, a flange extending radially at one end of the shank, and, at the opposite end of the shank, a foot end and located in the bore of the rivet body, a mandrel that has a mandrel shank, a drawing end projecting out of the flange of the rivet body that can be separated from the mandrel shank, and a mandrel head that stands in operative connection with a foot end of the rivet body in order to transmit a force to the rivet body during setting of the blind rivet, the shank of the rivet body has a first section adjoining the flange and, adjacent thereto and extending to the foot end, a second section, wherein the first section defines an original cylindrical shape, but with a plurality of spaced apart, longitudinally extending flat deformations of the original cylindrical shape separated by undeformed longitudinal portions substantially retaining corresponding portions of the original cylindrical shape, and wherein the strength of the first section of the shank is increased with respect to the strength of the second section by the spaced apart flat deformations as a result of plastic deformation via cold forming the flat deformations so that the outside diameter of the first section does not increase or increases only slightly during rivet setting, and wherein the flat deformations of the hardened section are depressions, wherein the second section of the shank has a barrel-like shape that curves outward, a mandrel head includes an annular and angled recessed contact surface engaging a blind end of the rivet body when set, and the mandrel head remaining secured to the rivet body after being set. 2. The blind rivet assembly according to claim 1, wherein the first section is plastically deformed to increase its strength. 3. The blind rivet assembly according to claim 1, wherein the first section has at least three of the deformations consisting of: radial indentations, compressions, or crimps, which extend over a majority of its length. 4. The blind rivet assembly according to claim 1, wherein the foot end of the shank has an increased strength as compared to the second section. 5. The blind rivet assembly according to claim 1, wherein the mandrel shank has, in the region of the foot end, at least one projection, and the foot end is brought by plastic deformation into a shape that engages around the projection. 6. The blind rivet assembly according to claim 1, wherein the mandrel shank and the drawing end are joined by a constricted parting section, which is located in the bore of the rivet body, and causes the remaining broken end of the set mandrel to be internally offset from the exposed flange of the rivet body. 7. The blind rivet assembly according to claim 1, wherein the rivet head has a contact surface for supporting the foot end that is inclined at an acute angle with respect to the longitudinal axis of the mandrel. 8. The blind rivet assembly according to claim 1, wherein the rivet body is aluminum, the mandrel is steel and the rivet body after rivet setting joining at least two plastic components that are plastic automotive parts. 9. The blind rivet assembly according to claim 1, further comprising first and second components, at least one being plastic that are joined after rivet setting, wherein the second component is located inaccessibly behind the first component, the two components have bores that are aligned with one another through which the blind rivet passes, wherein the flange of the blind rivet rests against the first component, the first section of the rivet's shank extends through the first component, and the second section of the shank forms the blind-side flange that lies substantially flat against the back of the second component, and wherein the outside diameter of the set first section is essentially equal to or smaller than the original inside diameter of the bore in the accessible, first component. 10. The blind rivet assembly according to claim 1, further comprising at least two components joined after rivet setting and at least one of the components being plastic, wherein the length of the first section of the shank is essentially equal to a sum of the thicknesses of the joined components in the region of the bores that the blind rivet passes through, or is smaller than the sum. 11. The blind rivet assembly according to claim 1, further comprising at least two components joined by the rivet after rivet setting, wherein the at least two components are both plastic. 12. A blind rivet assembly comprising: (a) a plastic first part;(b) at least a second part, each of the parts having a bore defined by a straight internal wall coaxially aligned with a centerline, completely from an accessible outer surface of the parts to a blind outer surface of the parts;(c) a rivet body comprising a pre-formed tool-side flange, a hardened section adjacent the tool-side flange, and a barrel shaped section between the hardened section and a blind end of the rivet body, the hardened section including at least two longitudinally elongated cold-worked deformations; the barrel shaped section laterally bulging beyond a largest internal diameter of the bores to longitudinally compress the parts between it and the tool-side flange when in a set condition; andthe hardened section defining an original cylindrical shape, but with a plurality of spaced apart, longitudinally extending flat deformations of the original cylindrical shape separated by undeformed longitudinal portions substantially retaining corresponding portions of the original cylindrical shape, and wherein the strength of the first section of the shank is increased with respect to the strength of the second section by the spaced apart flat deformations as a result of plastic deformation via cold forming the flat deformations so that the outside diameter of the first section does not increase or increases only slightly during rivet setting; andwherein the flat deformations of the hardened section are depressions. 13. The blind rivet assembly according to claim 12, further comprising a mandrel comprising a longitudinally elongated stem and a laterally enlarged head, the stem including at least one annular formation which is internally located within the rivet body both before and after rivet setting. 14. The blind rivet assembly according to claim 13, wherein the at least one annular formation includes an annular constricted neck which breaks during setting and at least two annular ribs which hold the remaining set mandrel to the rivet body. 15. The blind rivet assembly according to claim 12, wherein each of the deformations of the hardened section have a substantially rectangular peripheral shape with the elongated side edges being substantially parallel to the centerline and to all of the internal walls defining the bores in the parts. 16. The blind rivet assembly according to claim 12, wherein the deformations of the hardened section are spaced apart from each other and constitute at least a majority of the longitudinal distance within the bores of the parts. 17. The blind rivet assembly according to claim 12, wherein the deformations of the hardened section constitute less than all of the longitudinal distance within the bores of the parts. 18. The blind rivet assembly according to claim 12, wherein a backside of the tool-side flange is angled away from the adjacent part closest to the centerline and a laterally enlarged foot is adjacent the blind end of the rivet body, at least prior to rivet setting. 19. The blind rivet assembly according to claim 12, wherein all of the parts are plastic automotive components. 20. The blind rivet assembly according to claim 12, wherein the first part is an automotive door part. 21. A blind rivet assembly comprising: (a) a rivet body comprising a pre-formed tool-side flange, a hardened section adjacent the tool-side flange, and a barrel shaped section between the hardened section and a blind end of the rivet body, the hardened section including at least two longitudinally elongated cold-worked deformations; and(b) a mandrel comprising a longitudinally elongated stem and a laterally enlarged head, the stem including at least one annular formation which is internally located within the rivet body both before and after rivet setting; wherein the first section defines an original cylindrical shape, but with a plurality of spaced apart, longitudinally extending flat deformations of the original cylindrical shape separated by undeformed longitudinal portions substantially retaining corresponding portions of the original cylindrical shape; andwherein the strength of the first section of the shank is increased with respect to the strength of the second section by the spaced apart flat deformations as a result of plastic deformation via cold forming the flat deformations so that the outside diameter of the first section does not increase or increases only slightly during rivet setting; andwherein the flat deformations of the hardened section are depressions. 22. The blind rivet assembly according to claim 21, wherein the at least one annular formation includes an annular constricted neck which breaks during setting and at least two annular ribs which hold the remaining set mandrel to the rivet body. 23. The blind rivet assembly according to claim 21, further comprising parts having bores through which the rivet body extends, wherein each of the deformations of the hardened section have a substantially rectangular peripheral shape with the elongated side edges being substantially parallel to the centerline and to internal walls defining the bores in the parts. 24. The blind rivet assembly according to claim 21, further comprising parts having bores through which the rivet body extends, wherein the deformations of the hardened section are spaced apart from each other and constitute at least a majority of an entire longitudinal distance of the bores of the parts. 25. The blind rivet assembly according to claim 21, further comprising parts having bores through which the rivet body extends, wherein the deformations of the hardened section constitute less than an entire longitudinal distance of the bores of the parts. 26. The blind rivet assembly according to claim 21, further comprising parts having bores through which the rivet body extends, wherein a backside of the tool-side flange is angled away from an adjacent one of the parts closest to the centerline and a laterally enlarged foot is adjacent the blind end of the rivet body, at least prior to rivet setting. 27. The blind rivet assembly according to claim 21, further comprising parts having bores through which the rivet body extends, wherein all of the parts are plastic automotive components. 28. The blind rivet assembly according to claim 21, further comprising parts having bores through which the rivet body extends, wherein at least one of the parts is an automotive door part. 29. A blind rivet assembly comprising: (a) a plastic first part;(b) at least a second plastic part, each of the parts having a bore defined by a straight internal wall coaxially aligned with a centerline, from an accessible outer surface of the parts to a blind outer surface of the parts;(c) a rivet body comprising: tool-side flange;a hardened section adjacent the tool-side flange;a barrel shaped section between the hardened section and a blind end of the rivet body;the hardened section defining an original cylindrical shape, but with at least two longitudinally elongated cold-worked flat deformations of the original cylindrical shape, the flat deformations being separated by undeformed longitudinal portions substantially retaining corresponding portions of the original cylindrical shape, the hardened section has a strength that is increased with respect to a strength of the second section by the spaced apart flat deformations as a result of plastic deformation via cold forming the flat deformations to resist lateral expansion so that an outside diameter of the first section does not increase or increases only slightly during rivet setting, each of the flat deformations of the hardened section having a substantially rectangular peripheral shape with the elongated side edges being substantially parallel to the centerline, and the deformations of the hardened section being spaced apart from each other, wherein the flat deformations of the hardened section are depressions;the barrel shaped section laterally bulging beyond a largest internal diameter of the bores to longitudinally compress the parts between it and the tool-side flange when in a set condition;(d) a mandrel comprising: a longitudinally elongated stem including at least one annular formation which is internally located within the rivet body both before and after rivet setting;a laterally enlarged head;the at least one annular formation including an annular constricted neck which breaks during setting; andat least two annular ribs which hold the remaining set mandrel to the rivet body. 30. The blind rivet assembly according to claim 29, wherein the deformations of the hardened section constitute less than all of the longitudinal distance within the bores of the parts. 31. The blind rivet assembly according to claim 29, wherein the first part is an automotive door part.
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