Gkn Viscodrive Gmbh

Viscodrive Japan Kabushiki Kaisha

Viscodrive Japan Pk

Viscodrive Japan Kk

Makoto Hagiwara

Manfred Hofer

The invention relates to a viscous coupling 1 having a housing 2 consisting of a tubular housing casing 3, and end walls 4, 5 extending radially relative to the longitudinal axis 9. Furthermore the viscous coupling 1 comprises a hub 11 which is manufactured from a tube in a non-chip producing forming operation and which, by means of bearing faces 13 and 14, is relatively rotatably supported in the end walls 4, 5 of the housing 2. The inner toothing 10 of the housing 2 non-rotatably accommodates outer plates 35. Inner plates 36 are non-rotatably associated with the hub 11 so as to alternate with the outer plates 35. The inner plates 36 are received in the outer toothing 15 of the hub 11. The hub 11 also comprises inner toothing 30 to provide a non-rotating connection with corresponding outer toothing 29 of a shaft 28. The sets of toothing 15, 30 of the hub 11 are produced from a cylindrical tube by a non-chip generating forming operation so that in each case a tooth of the outer toothing 15 forms a gap between the teeth of the inner toothing 30. In this way it is possible to produce a space-saving assembly allowing the radial overlap X of the outer plates 35 and inner plates 36 to be enlarged so that while the space required for assembly remains the same, the torque transmitting capacity is increased.

Viscous coupling having a toothed hub used as a carrier for the inner

The invention relates to a viscous coupling 1 having a housing 2 consisting of a tubular housing casing 3, and end walls 4, 5 extending radially relative to the longitudinal axis 9. Furthermore, the viscous coupling 1 comprises a hub 11 which is manufactured from a tube in a non-chip producing forming operation and which, by means of bearing faces 13 and 14, is relatively rotatably supported in the end walls 4, 5 of the housing 2. The inner toothing 10 of the housing 2 non-rotatably accommodates outer plates 35. Inner plates 36 are non-rotatably associated with the hub 11 so as to alternate with the outer plates 35. The inner plates 36 are received in the outer toothing 15 of the hub 11. The hub 11 also comprises inner toothing 30 to provide a non-rotating connection with corresponding outer toothing 29 of a shaft 28. The sets of toothing 15, 30 of the hub 11 are produced from a cylindrical tube by a non-chip generating forming operation so that in each case a tooth of the outer toothing 15 forms a gap between the teeth of the inner toothing 30. In this way it is possible to produce a space-saving assembly allowing the radial overlap X of the outer plates 35 and inner plates 36 to be enlarged so that while the space required for assembly remains the same, the torque transmitting capacity is increased.

Viscous coupling having a toothed hub used as carrier for the inner

A viscous coupling has first planar plates which are held and spaced in a housing of the viscous coupling. Second slotted plates, each received and movably held between two first plates, are also positioned in the housing. The second plates (24) include slots (36) which start from the outer circumferential face (32) of the plate (24) and extend over a limited part of the radial extension of the annular plate (24). The slots (36) are each defined by edges (38, 39) which protrude from a planar face of the plate (24). Via the edges, the second plates come into contact with the adjoining first plates which are fixed so as to be spaced. The sector (40) formed between the circumferential face (32), two adjoining slots (36) and an imaginary circle (41) at the slot end (37) of the slots (36) is provided with an aperture (42) to discharge viscous fluid contained therein.

Growing community of inventors

Bonn, Germany

Makoto Hagiwara