초록 ▼

A force fit connecting element (1), particularly a wheel stud, which may be force fit into in a drilled hole (3) through the exertion of an axial force, having a shank (5) and a stop (4) in the shape of a head, a collar or the like, having a diameter larger than shank (5). The shank (5) has on the s

A force fit connecting element (1), particularly a wheel stud, which may be force fit into in a drilled hole (3) through the exertion of an axial force, having a shank (5) and a stop (4) in the shape of a head, a collar or the like, having a diameter larger than shank (5). The shank (5) has on the side facing the stop (4) a force fit section (10), which is oversized with respect to the corresponding drilled hole (3). The shank (5) has on the side facing away from the stop (4) a section (22) with a fastening thread (23). The force fit section (10) has a multiple-threaded, preferably at least triple-threaded, helical profile (11). The helical profile (11), with respect to the cylindrical surface area of the drilled hole (3), has a contact area fraction (33) of at least 30% and is made by cold forming.

대표청구항 ▼

A removable and reusable force fit connector comprising: a corresponding part of a first material having a drilled hole, said drilled hole having an open ended and generally cylindrical surface extending along the circumference of said drilled hole through the corresponding part; a force fit connect

A removable and reusable force fit connector comprising: a corresponding part of a first material having a drilled hole, said drilled hole having an open ended and generally cylindrical surface extending along the circumference of said drilled hole through the corresponding part; a force fit connecting element of a second material of a greater strength than said first material for being axially forced into said drilled hole, said connecting element including an elongated and generally cylindrical shank formed about a longitudinal axis, said shank having a breadth, a first end, and an opposed second end; a stop formed at the first end of said shank, said stop having a breadth greater than the breadth of said shank; a threaded section formed on said shank adjacent said second end thereof, said threaded section having at least one helical thread defined thereon, said at least one helical thread having an outer thread diameter sized smaller than the diameter of said drilled hole; a force fit section formed on said shank intermediate said stop and said threaded section, said force fit section including at least three generally non-deformable threads sized and shaped to align said shank within said drilled hole, each of said at least three threads having a generally helical profile and an oversized outer diameter sized greater than the diameter of said drilled hole, each of said at least three threads being sized and shaped to elastically deform the cylindrical surface of said drilled hole engaged by said at least three threads, as said connecting element is axially forced into said drilled hole; said threads of said force fit section including a conical region tapered inwardly toward said threaded section for centering said connecting element in the hole of said corresponding part; said shank including a transition region between said conical region and said threaded section of smaller breadth than the breadth of said force fit section; each of said at least three threads of said force fit section forming a contact area with at least a portion of the cylindrical surface of said drilled hole, said contact area having a contact area fraction between the portions of said at least three threads engaged with the cylindrical surface of said drilled hole with respect to the total cylindrical surface of the drilled hole of at least thirty per-cent.