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Plunger Guiding and Tension Adjusting Mechanism

IP.com Disclosure Number: IPCOM000086701D
Original Publication Date: 1976-Oct-01
Included in the Prior Art Database: 2005-Mar-03
Document File: 2 page(s) / 33K

Publishing Venue

IBM

Related People

Sendelweck, ML: AUTHOR

Abstract

Flat spring 1 is very stiff in the x, y directions but has a low spring rate in the z direction. This serves as a constrained motion guide for the solenoid plunger 5. It allows the plunger to move freely without friction in the z direction, but does not allow it to pull sideways in the x or y direction or to rub on the solenoid top 7. There are strong magnetic forces which try to pull the plunger sideways. Flat spring 2 employs on a knife edge 3, screw 4 and on spring 1 near the plunger. A small protrusion aligns springs 1 and 2. Tightening screw 4 will put a load on the plunger assembly in the z direction, bringing the plunger to rest on stop 6.

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Plunger Guiding and Tension Adjusting Mechanism

Flat spring 1 is very stiff in the x, y directions but has a low spring rate in the z direction. This serves as a constrained motion guide for the solenoid plunger 5. It allows the plunger to move freely without friction in the z direction, but does not allow it to pull sideways in the x or y direction or to rub on the solenoid top 7. There are strong magnetic forces which try to pull the plunger sideways. Flat spring 2 employs on a knife edge 3, screw 4 and on spring 1 near the plunger. A small protrusion aligns springs 1 and 2. Tightening screw 4 will put a load on the plunger assembly in the z direction, bringing the plunger to rest on stop 6.

The advantages of the mechanism are: (1) Adjustable tension compensates for different spring rates of utilizing devices. (2) The spring can be adjusted dynamically to change the operating characteristics of utilizing devices. (3) Plunger guiding is friction free, constrained and free of backlash.

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