Browse Prior Art Database

Bistable Belt Tension Follower

IP.com Disclosure Number: IPCOM000044755D
Original Publication Date: 1984-Jul-01
Included in the Prior Art Database: 2005-Feb-06
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Rachui, RA: AUTHOR

Abstract

For belt tension adjustment a bistable belt tension follower is provided that is urged by spring force against the belt between two pulleys. If the tension force of the belt becomes greater than the spring force of the follower, the follower tips over in its second stable position, thus indicating the intended belt tension.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 100% of the total text.

Page 1 of 1

Bistable Belt Tension Follower

For belt tension adjustment a bistable belt tension follower is provided that is urged by spring force against the belt between two pulleys. If the tension force of the belt becomes greater than the spring force of the follower, the follower tips over in its second stable position, thus indicating the intended belt tension.

Fig. 1 shows an over-center spring lever mechanism which freely pivots on an axle 1. A spring 2 is attached to the lever and anchored. When pulley 3 is moved in the direction of arrow 4 to tension belt 5, it applies an equal force to a cam 6 which is attached to the lever mechanism and which rides on belt 5. When belt tension is adjusted to the desired value, the forces of spring 2 and the belt tension become equal and, hence, an equilibrium state of the bistable tension follower is reached. Then only a small force is sufficient to let the follower collapse and snap over into its second stable state.

Fig. 2 shows cam 6 as an integral part of a shield 7 that covers belt 5. Webs 8 of shield 7 are dimensioned in relation to their flexibility such that they meet the tension requirements of belt 5. If pulley 3 is moved far enough in the direction of arrow 4, cam 6 snaps in direction 9 into its second stable state.

Disclosed anonymously

1