Browse Prior Art Database

BELT CLIP/HOLSTER PAGER LOCKING MECHANISM

IP.com Disclosure Number: IPCOM000008190D
Original Publication Date: 1997-Jun-01
Included in the Prior Art Database: 2002-May-24
Document File: 1 page(s) / 50K

Publishing Venue

Motorola

Related People

George Gurik: AUTHOR

Abstract

Many pager holsters currently use interference retention pins and press fits to retain pagers. There are some inherent problems with these approaches. For example, retention pins may be slightly too long due to tolerances and may cause difficulties in removing the pagers initially. Then after time, these retention pins may wear down and create grooves in the mating features, which reduce the retention forces to unacceptable levels, which then causes the customers to lose their pagers. When press fit interferences are designed into the pager/holster assemblies, the tooling tolerances and material property variations may cause inconsistent removal forces. These press fit designs also tend to wear unacceptable scribes into the pagers.

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Technical Developments

BELT CLIP/HOLSTER PAGER LOCKING MECHANISM

by George Gurik

PROBLEM

  Many pager holsters currently use interference retention pins and press fits to retain pagers. There are some inherent problems with these approaches. For example, retention pins may be slightly too long due to tolerances and may cause difficulties in removing the pagers initially. Then after time, these retention pins may wear down and create grooves in the mating features, which reduce the retention forces to unacceptable levels, which then causes the customers to lose their pagers. When press fit interferences are designed into the pager/holster

assemblies, the tooling tolerances and material property variations may cause inconsistent removal forces. These press fit designs also tend to wear unacceptable scribes into the pagers.

SOLUTION

  The belt clip can be used to retain a pager securely in the holster. By extending features from the belt clip through the back of the holster, and into mating features on the back of the pager the spring forces of the belt clip will automatically secure the pager as shown in the cross section view below.

RESULTS/RECOMMENDATIONS naturally rotated and released the locking feature.

When this concept is used, the retaining pin should

~.

  A prototype was created and worked well. The be near the top of the belt clip to avoid clothing retaining pin held the pager securely. When interference and to allow proper function in the pager was pu...