Anti-backlash device in a gear
AssigneeBobst SA
InventorPhilippe Clement
Life of this patent
Estimating the term…
Abstract
A driving element is divided into two coaxial toothed members elastically attached to one another. A first of the toothed members is fixed to a shaft. The second of the toothed members is freely mounted on this shaft. The second toothed member has a planar face, opposite and facing away from the first toothed member. That face has seats arranged around the shaft to receive first respective ends of deflection rods. The rods extend, with the shaft, outside of the toothed member. A flange has an axial passage for receiving an end of the shaft. The flange has seats for receiving second respective ends of the deflection rods. A device for clamping the flange on the end of the shaft and in an angular position around the shaft fitted to apply a deflection stress to the rods.
Claims8
Anti-backlash device in a gear comprising:
- a toothed driving gear element comprising two coaxial and toothed members;
- an elastic attachment between the toothed members and adapted to create a torque between the toothed members;
- a drive shaft to which a first of the toothed members is fixedly attached;
- a second of the toothed members is freely mounted on the shaft, the second toothed member having a face, opposite and facing away from the first toothed member, the face having first seats arranged around the shaft;
- deflectable deflection rods having respective first and second ends;
- the first ends each being received in one of the first seats, the deflection rods extend, along with the shaft, axially outside of the second toothed member away from the first member;
- a flange spaced away from the face of the second toothed members, the flange including an axial passage for receiving the shaft, second seats in the flange arranged around the axial passage, the deflection rod second respective ends being received in the second seats;
- a clamping device for clamping the flange on the shaft in an angular position around the shaft fitted to apply to the rods an elastic deflection stress adjustable according to a desired torque between the toothed members.
Dependencies are inferred from the claim text.