| US 7,527,575 B2 | ||
| Lockable differential | ||
| Ditmar Salg, Röhrnbach (Germany); and Stefan Reicheneder, Passau (Germany) | ||
| Assigned to ZF Friedrichshafen AG, Friedrichshafen (Germany) | ||
| Filed on Jul. 31, 2006, as Appl. No. 11/496,566. | ||
| Claims priority of application No. 10 2005 037 559 (DE), filed on Aug. 10, 2005. | ||
| Prior Publication US 2007/0037655 A1, Feb. 15, 2007 | ||
| Int. Cl. F16H 48/20 (2006.01) | ||
| U.S. Cl. 475—231 [475/240] | 10 Claims |
| 1. A lockable differential in which
a driven differential cage (5),
a bevel gear (2), and
a sliding sleeve (4)
are all co-axially disposed along a common axis of rotation (7) and a plug shaft is non-torsionally connected with the bevel gear (2) and the sliding sleeve (4), a first lockable part (6) is non-rotatably connected with the differential cage (5) and forms a first part (10) of a positive-fit clutch (12), the sliding sleeve (4) forms a second lockable part (11) of the positive-fit clutch (12), the positive-fit clutch (12) being engaged and disengaged by displacement of the sliding sleeve (4) along the common axis of rotation (7), the sliding sleeve (4) being biased toward an engagement direction by pressurization of a piston (15) which is located co-axially relative to the sliding sleeve (4), and the piston (15) applying a displacement force to the sliding sleeve (4) via a bearing (14);
the piston (15) has a contact surface (16) and the sliding sleeve (4) has a contact surface (13), and the bearing (14) is located between the contact surface (16) of the piston (15) and the contact surface (13) of the sliding sleeve (4); and
a spring (19) forces the bearing (14) to engage with the contact surface (16) of the piston (15).
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