Decoupling element of deformable material in a power transmission system
AssigneeHutchinson
InventorsHenri Kamdem, Willy Bourdeau
Life of this patent
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Abstract
The invention seeks to improve the transfer function of drive devices such as pulleys and other coupling means, and it proposes creating zones of shear in the inserted deformable material forming a decoupling element. In an embodiment, the decoupling element is made in the form of a ring (2) presenting at least one meshing face (21e, 21i) complementary to a corresponding meshing face (31, 41) formed on the facing support (3, 4), the meshing projections (2e, 2i, 3e, 4i) engaging in one another to take up power transmission torque by working in shear by being blocked against each other during rotation. The invention is applicable to all drive devices including a filtering, damping, or absorbing element, e.g. for use in the automotive industry.
Claims15
A decoupling element and two support power transmission combination comprising:
- a decoupling element made of deformable material;
- and
- two supports;
- wherein the decoupling element is interposed between faces (31, 41;
- 312, 413) of the two supports (3, 4;
- 3′, 4′;
- 300, 400) of a drive device having a central axis (X′X) of rotation, one of the supports adapted to be driven, the decoupling element adapted to transmit power from the one support to the other support, the other support adapted for further power transmission,
- the decoupling element further comprising a ring (2, 200) comprising a central core (1) and at least two opposite faces (21e, 21i;
- 212, 213), and being characterized in that these faces (21i, 21e;
- 212, 213) have abrupt projections meshed together with complementary abrupt projections of opposing faces (31, 41;
- 312, 313) of the supports (3, 4;
- 3′, 4′;
- 300, 400), meshing of the ring (2, 200) creating zones (K1) at the roots of the projections (2e, 2i;
- 2′e, 2′i;
- 3e, 4i;
- 3′e, 4′i;
- 20e, 20i;
- 202, 203;
- 302, 403) in the central core, where the central core (1) substantially works in shear for transmission of said power from one support to the other, these zones being regularly distributed over the faces (21e, 21i;
- 212, 213) of the ring (2, 200), the abrupt projections of the faces (21i, 21e;
- 212, 213) present whether or not the abrupt projections mesh together with the complementary abrupt projections of the opposing faces (31, 41;
- 312, 313) of the supports.
Dependencies are inferred from the claim text.