Browse Prior Art Database

LOCKING SNAP FIT ASSEMBLY

IP.com Disclosure Number: IPCOM000007395D
Original Publication Date: 1995-Mar-01
Included in the Prior Art Database: 2002-Mar-21
Document File: 1 page(s) / 55K

Publishing Venue

Motorola

Related People

Jay K Pottala: AUTHOR [+2]

Abstract

The industry trend is to reduce part count, and the PCB is snapped into the internal under cuts on increase ease of assembly. Both of these concerns the baseplate (Figure 1) causing the cantilever beams drive the need for snap tit designs into every new to deflect outward. Then the baseplate subassembly product. Traditional single hmctionality snap tits are is snapped into the housing by means of the exter- not capable of providing a positive locking scheme nal under cuts, which causes the cantilevers to deflect by themselves. This requires the use of an additional inward. Now the moment applied by the pogo-pins part; which results in unnecessary added cost, man- trying to rotate the cantilever snaps away from the ufacturing process, and inventory. PCB is counter acted by the housing wall; providing a positive locking mechanism. Thus the radio The locking snap fit secures the PCB or other impacting the pogo-pins will not dislodge the PCB. component from becoming dislodged during an Using a dual purpose cantilever snap, and a positive impact, or with use over time. There is a specific locking mechanism provide a much improved sequence of operation. In this particular application assembly.

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0 M MO-LA

Technical Developments Volume 24 March1995

LOCKING SNAP FIT ASSEMBLY

by Jay K Pottala and Don W. Burnette

  The industry trend is to reduce part count, and the PCB is snapped into the internal under cuts on increase ease of assembly. Both of these concerns the baseplate (Figure 1) causing the cantilever beams drive the need for snap tit designs into every new to deflect outward. Then the baseplate subassembly product. Traditional single hmctionality snap tits are is snapped into the housing by means of the exter- not capable of providing a positive locking scheme nal under cuts, which causes the cantilevers to deflect by themselves. This requires the use of an additional inward. Now the moment applied by the pogo-pins part; which results in unnecessary added cost, man- trying to rotate the cantilever snaps away from the ufacturing process, and inventory. PCB is counter acted by the housing wall; providing a positive locking mechanism. Thus the radio The locking snap fit secures the PCB or other impacting the pogo-pins will not dislodge the PCB. component from becoming dislodged during an Using a dual purpose cantilever snap, and a positive impact, or with use over time. There is a specific locking mechanism provide a much improved sequence of operation. In this particular application assembly.

RADIO LOAD

1

ASEPLATE

POGO PINS-

-DUAL PURPOSE

CANTILEVER SNAP

HOUSING WALLJ

flGURE I. SECTION A-A

0 Motorola, Inc. ,995

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