Browse Prior Art Database

ONE-HOT MOLDED UNITARY LOCKING BELT CLIP

IP.com Disclosure Number: IPCOM000005791D
Original Publication Date: 1989-Aug-01
Included in the Prior Art Database: 2001-Nov-07
Document File: 2 page(s) / 64K

Publishing Venue

Motorola

Related People

Michael P. Goldenberg: AUTHOR

Abstract

The most widely used method of attaching personal radios to articles of clothing is with a spring-loaded pivoting belt clip.Thedrawbackswith thisapprdach isthattheassemblyrequiresmanyparts whichcreateextra product cost and complexity.

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MOlWROLA Technical Developments Volume 9 August 1989

ONE-HOT MOLDED UNITARY LOCKING BELT CLIP

by Michael P. Goldenberg

   The most widely used method of attaching personal radios to articles of clothing is with a spring-loaded pivoting belt clip.Thedrawbackswith thisapprdach isthattheassemblyrequiresmanyparts whichcreateextra product cost and complexity.

   The purpose of the locking belt clip is to eliminate extra parts by combining them into a one-piece design, reducing product cost. Eliminated parts include: pivot pin, snap-ring, spring, retainer (pivot bosses) to provide clamping force for the clip. An over-center four-bar mechanism was used. This configuration replaces the mechanical spring.

   The clamping force is created as follows. With the clip in the open position (FIG. l), the lever is depressed (rotated down) to the closed position (FIG. 2). During the closing motion, hinge 2 travels beyond the center line through hinges 1 and 3. Since the mechanism was designed small (the clip bottoms out on retainer/base before central position of hinge 2 is reached), the linkage members become deflected or stressed. This stores energy in the system which clamps the belt clip in the closed position and prevents the lever from returning to the open position. To open the belt clip, sufficient force must be applied to the lever to overcome the center position.

0 Motorola, Inc. 1989 46

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MOIOROLA Technical...