E-MAIL: info@connexusa.com Voice: 814-474-4550 Fax: 814-474-4577

CONNEX Inc. 7660 Klier Drive N., Fairview, PA 16415

 

 

 

 

 

 

 

The CONNEX Principle – Spring Pins

As a result of the CONNEX Principle, in applications where our spring pin is used, the performance is increased when compared with other pins. CONNEX Spring Pins are longitudinally slotted with a staggered-toothed seam. The toothed design follows the elasticity modulus of the material.

The teeth are staggered above their corresponding space widths to a specific degree. Upon insertion into the smaller receiving bore and the resulting compression of the material of the tension element, the teeth touch on one side only. The resulting combination of axial thrust with the radial acting spring force causes an increased surface pressure, and therefore, an increased seating capacity in the housing.

The properties resulting from the state of tension are an important consideration in any fastening application.

Any element under stress produces a so-called critical cross section for which, depending on the forces acting, the bending, torsion or transverse stress reach a maximum value. This also applies to spring pins. Since the straight-slotted spring pin is primarily subject to bending, the critical cross section is located opposite the slot. In the case of high alternating stress, fatigue always appears at this position first.

It is, therefore, not possible to increase the contact pressure, and thereby the seating capacity, with a prestress which lies above the elasticity limit of the material. This is increasingly possible, however, through an evenly distributed stress as in the case of the CONNEX staggered-toothed slot with its closed tension field.

The perspective diagram shows that the profile pressure produces a tangential force. In conjunction with the radial acting spring force, this design results in a higher contact pressure between pin and housing. The dangerous bending stress is reduced thanks to the new state of tension.

The Connex® Principle

Spring Pins - Standard and Ground

Spring Pin Properties

Shear Resistance and Material Strength

Heavy Spring Pins (Inch Sizes), Type S

Ground Heavy Spring Pins (Inch Sizes), Type SG

Heavy Spring Pins (Metric Sizes), Type S

Light Spring Pins (Metric Sizes), Type L

Examples of Applications Using Connex® Spring Pins

 

 

 

 

 

 

 

 

 

 

 

 

 

E-MAIL: info@connexusa.com Voice: 814-474-4550 Fax: 814-474-4577

CONNEX Inc. 7660 Klier Drive N., Fairview, PA 16415