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Interlocking Springs for Gear Shaft Preload

IP.com Disclosure Number: IPCOM000052481D
Original Publication Date: 1981-Jun-01
Included in the Prior Art Database: 2005-Feb-11
Document File: 2 page(s) / 54K

Publishing Venue

IBM

Related People

Gontarek, RF: AUTHOR [+2]

Abstract

The present structure involves a pair of interlocking springs which provide a preload tooth mesh between a pair of gears wherein tooth depth variations would not create any problem.

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Interlocking Springs for Gear Shaft Preload

The present structure involves a pair of interlocking springs which provide a preload tooth mesh between a pair of gears wherein tooth depth variations would not create any problem.

The middle sections 10 and 11 of gear pairs 13 and 12, respectively, engage shafts 14 and 15 on which mesh gears 16 and 17 are mounted. Spring portions 10 and 11 provide bearing surfaces within which gear shafts 14 and 15 are respectively received, as shown in Fig. 1. The ends of each of springs 12 and 13 have mating helical shapes so as to engage one another, as shown in the detail of the ends of springs 12 and 13 in Fig. 2.

When the two helical ends of the pair of springs are respectively interlocked with each other (which may be accomplished by laterally sliding the springs into engagement with each other), the interlock springs act on the shaft to preload the gears 16 and 17 into engagement with each other, as shown. The flex force of each spring can be controlled so as to control the force of the preload. By the floating axes of the gear shafts working in conjunction with these interlocking springs, full tooth engagement of the gear may be assured irrespective of non uniformities in the teeth as well as variations in the tooth depths.

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