METHOD OF ATTACHING A PIN-LIKE ELEMENT, A COMPONENT ASSEMBLY AND A CENTERING PIN
A method of attaching a pin-like element ( 10 ) for example a centering pin or a bolt element in a component ( 20 ), for example in the form of a plate or of a wall section of a housing, wherein the pin-like element ( 10 ) has a head part ( 12 ) with a larger transverse dimension and an end face ( 14 ) as well as a shaft part ( 16 ) with a smaller transverse dimension and wherein the head part merges via an at least generally radially extending contact surface ( 30 ) into the shaft part ( 16 ), is characterized in that an element ( 10 ) is selected having an axial length of the head part which is significantly smaller than the thickness of the component ( 20 ) at the point of attachment of the pin-like element, in that a stepped bore ( 22 ) is produced in the component having a first region ( 24 ) of larger diameter which receives the head part ( 12 ) of the element and a second region ( 26 ) which receives the shaft part ( 16 ) and has a diameter which is of the same size as or fractionally smaller than the diameter of this shaft part, wherein the first region ( 24 ) of the stepped bore has a depth, which is somewhat greater than a longitudinal dimension of the head part ( 12 ) from the end face ( 14 ) to the contact surface ( 30 ) and in that at least one notch ( 36 ) is introduced by material deformation in the edge region of the component around the opening of the region ( 24 ) of the stepped bore ( 22 ) of larger diameter which leads to a displacement of material of the component over the end face of the element at least one point ( 38 ) and in this way secures the element ( 10 ) in the component ( 20 ) in the axial direction.
1 . An article comprising a pin element ( 10 ) in a component ( 20 ) in the form of one of a plate and a wall section of a housing, wherein the pin element ( 10 ) comprises a head part ( 12 ) with a first transverse dimension and an end face ( 14 ) as well as a shaft part ( 16 ) with a smaller than said first transverse dimension and said head part merges via an at least generally radially extending contact surface ( 30 ) into the shaft part ( 16 ),
said component having a thickness at a point of attachment of said pin element and said pin element ( 10 ) having an axial length of the head part which is significantly smaller than said thickness of the component ( 20 ) at the point of attachment of the pin element,
said component comprising a stepped bore ( 22 ) extending from a first side of said component to a second side thereof and having a first region ( 24 ) adjacent said first side which receives the head part ( 12 ) of the element and a second region ( 26 ) adjacent said second side which receives the shaft part ( 16 ), said second region having a diameter which is of the same size as or fractionally smaller than said second traverse dimension of said shaft part and said first region ( 24 ) having a diameter larger than said second region ( 26 ) and merging into said second region via a step surface ( 28 ) for said head part, said head part of said pin element having a shoulder ( 32 ) at said end face ( 14 ) and said the first region ( 24 ) of the stepped bore further having a depth from said first side to said step surface ( 28 ) which is somewhat greater than a longitudinal dimension of the head part ( 12 ) from said shoulder ( 32 ) to said contact surface ( 30 ) and
an edge region around an opening of the first region ( 24 ) of the stepped bore ( 22 ) at said first side, there being at least one notch ( 36 ) in said edge region of the component having a displacement of material of the component over said shoulder of the pin element at least one point ( 38 ) thereby securing the pin element ( 10 ) in the component ( 20 ) in the axial direction wherein said depth of said first region of said stepped bore ( 22 ) is so designed that said end face ( 14 ) of the element ( 10 ) does not project beyond said first side ( 17 ) and said depth of said second region is selected to be substantially less than an axial length of said shaft part so that said shaft part projects from said second side of said component.
2 . The article in accordance with claim 1 ,
in which said shoulder ( 32 ) of said head part ( 12 ) is a rounded shoulder and a conical shoulder ( 32 ) in the region of the end face ( 14 ) against which the displaced material ( 38 ) is brought into contact.
3 . The article in accordance with claim 1 ,
in which said notch ( 36 ) is a ring groove around the end face ( 14 ) of the head part ( 12 ) in which displaced material of the component adjacent said ring groove overlaps said end face ( 14 ) of said head part ( 12 ) at said shoulder ( 32 ).
4 . The article in accordance with claim 1 ,
in which said component ( 20 ) comprises a plurality of notches ( 36 ) in the component ( 20 ) around the longitudinal axis ( 40 ) of the pin element ( 10 ).
5 . The article in accordance with claim 1 ,
wherein at least one of the head part and the shaft part with edges or grooves extending in the axial direction has a form-fitted connection to the component.
6 . The article in accordance with claim 1 ,
wherein the head part of the element is deformed locally in order to form a security against rotation.
7 . The article in accordance with claim 1 , the article further comprising said pin element ( 10 ) pressed into the component.
8 . The article in accordance with claim 4 in which said plurality of notches is uniformly distributed around said longitudinal axis.
9 . The article in accordance with claim 7 in which said component is supported at said second side of said component from which said shaft part ( 16 ) of said pin element projects on a die button which receives said shaft part projecting out of said component at said second side.
10 . The article of claim 1 in which said pin element is a centering pin.
11 . The article of claim 1 in which said pin element is a bolt element.