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Actuation of a differential lock

  • US 4,775,026 A
  • Filed: 04/24/1986
  • Issued: 10/04/1988
  • Est. Priority Date: 08/29/1984
  • Status: Expired due to Fees
First Claim
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1. An actuator device for a differential lock which is controlled by a signal originating outside the differential lock, said device having a signal generator (7) actuated upon at an immediately sensed value of a steering angle excursion (L) due to an excursion of a displaceable steering element (5, 20) with respect to an axle housing (2) wherein the improvement comprises the signal generator (7) being mounted embedded in a construction element (2, 3) rigidly connected to the axle housing (2) so as to provide protection against impact, dirt and damage, said signal generator being mounted adjacent a longitudinally displaceable piece of shaft joint part (25) in a fork bushing (26) on a side of a locking differential (10), said locking differential (10) being an electrically actuatable coupling (11) in an electrical switching circuit of the signal generator (7) whereby connection cables (31) are brought to said signal generator through the axle housing (2), said signal generator being a rotating potentiometer (23) arranged below a steering pivot (6) with a potentiometer shaft (24) facing said steering pivot (6) which is non-rotatably connected to the axle housing (2) by means of a holding flange (34), below the outer bearing race (33) at a pivot bearing (32), and that in the steering pivot (6) there is provided a step bore (35) equipped with a thread (36) at its greatest diameter and rigidly connected with the wheel hub fork (20) but swingably movable with respect to the axle housing (2), wherein a hollow screw (37) grasps an adjusting pin (39) slotted on both ends and positively coupled to the potentiometer shaft (24) by means of an expansion spring (38) and holds a radial play of said adjusting pin locked by means of a sealing ring (40) positioned before it with respect to the axle.

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