Dual rotational and linear position sensor

摘要

A dual positional hall effect sensor 10 having an outer housing 12, an actuator 14, a linear movement sensor 20, and a rotational movement sensor device 22. The housing 12 includes a lower chamber 24 and an upper chamber 26, with a barrier wall 28 separating therebetween. The actuator 14 is made up of a coupling 32 for coupling to a movable device (not shown) that is to have its position sensed, a rod 34 that extends from the lower to the upper chamber, a collar 36 for retaining the actuator 14 within the lower chamber, and a key 38. The linear motion sensor 20 is unattachably positioned to set on collar 36, and includes a magnetically conducting pole piece 42 and a left and right magnets 44. The magnets 44 and pole piece 42 are positioned around the rod 34 in a "U" shaped configuration. The lower chamber 24 also includes a positionally fixed hall effect sensor 46 and a spring 48 positioned between the barrier wall 28 and the collar 36. The rotational movement sensor 22, located in the upper chamber 26, includes a sensor housing structure 52 that has a groove or slide 54 for insertion and sliding of the key 38. The sensor 22 further includes a magnetically conducting pole piece 56 and a top and bottom magnet 58. A hall sensor 60 is positioned between the two parts of the magnet 58 and fixed in position relative to any rotational movement of the rotational sensor 22.