ROTARY ENCODER
A rotary encoder for detection of rotary motion, optionally for multiple rotations, including a gear-like arrangement having a first component and a second component for a mechanical conversion of a rotary motion into a linear translational motion, which changes an axial relative position between the first component and the second component and includes a distance sensor for determining a distance to a measurement object, the distance being dependent on the relative axial position. The first component and the second component are manufactured as molding parts made of plastic, optionally as injection molding parts, and the gear-like arrangement includes, at the first component, a thread which engages with a second thread at the distance sensor and/or at the second component for a mechanical conversion of a rotary motion into a linear translational motion.
1 - 18 . (canceled)
19 . A rotary encoder, optionally an absolute rotary encoder, for detection of rotary motion, for multiple rotations, comprising:
a gear-like arrangement, having a first component and a second component, for a mechanical conversion of a rotary motion into a linear translational motion, which changes an axial relative position between the first component and the second component;
a distance sensor, in particular a non-contact distance sensor, for determining a distance to a measurement object, the distance being dependent on the relative axial position; wherein:
the first component and the second component are manufactured as molding parts made of plastic, in particular as injection molding parts; and
the gear-like arrangement comprises, at the first component, a first thread which engages with a second thread at the distance sensor and/or at the second component for a mechanical conversion of a rotary motion into a linear translational motion.
20 . The rotary encoder according to claim 19 , wherein the first thread is manufactured integrally with the first component, wherein preferably at least the first component and/or the second component is manufactured as a one-piece molding part made of plastic.
21 . The rotary encoder according to claim 19 , wherein at least part of the second thread, which engages with the first thread, is manufactured integrally with the second component.
22 . The rotary encoder according to claim 19 , wherein at least part of the second thread, which engages with the first thread, is manufactured integrally with a portion of the distance sensor, in particular with a sensor housing of the distance sensor, which encloses a sensor component of the distance sensor, in particular in a fluid-tight manner.
23 . The rotary encoder according to claim 21 , wherein the second thread is configured as an internal thread pointing towards the first component.
24 . The rotary encoder according to claim 22 , wherein the second thread is configured as an external thread pointing towards the first component.
25 . The rotary encoder according to claim 19 , wherein the first thread and/or the second thread comprises a flank angle of at least 40°, in particular of at least 55°.
26 . The rotary encoder according to claim 19 , wherein the first thread and the second thread comprise corresponding thread pitches such that the gear-like arrangement converts a rotary motion executed around a single revolution into a linear translational motion over a path of 0.25 mm to 25 mm, in particular of 0.5 mm to 10 mm.
27 . The rotary encoder according to claim 19 , wherein the distance sensor is configured at least as an inductive sensor or as a capacitive sensor, wherein optionally the distance sensor and the measurement object are arranged axially one behind the other without overlapping.
28 . The rotary encoder according to claim 27 , wherein the measurement object is configured as a plate, which is in particular made of metal and which is in particular axially supported on the first component.
29 . The rotary encoder according to claim 19 , wherein the distance sensor is attached in a rotationally fixed manner, in particular in a positionally fixed manner, to the second component, in particular by means of a sensor attachment of the second component, which interacts with the distance sensor force fitting and/or form fitting for attachment.
30 . The rotary encoder according to a claim 19 , wherein the first component and the second component each comprise an attachment region for attachment to machine parts that are rotatable relative to one another, wherein:
one of the two components can be, by means of its attachment region, attached axially in a positionally fixed manner to a first one of the machine parts; and
the other one of the two components can be, by means of its attachment region, attached axially movably on a second one of the machine parts.
31 . The rotary encoder according to claim 19 , wherein the first component and/or the second component are made of a same fiber-reinforced plastic.
32 . The rotary encoder according to claim 19 , wherein the first component and the second component are guided axially, in particular slidingly, movably relative to one another by a guide.
33 . The rotary encoder according to claim 19 , wherein the first component and the second component are arranged coaxially to the distance sensor and/or can be arranged coaxially to an axis of rotation of machine parts which are rotatably relative to one another for detection of a rotary motion of the machine parts.
34 . The rotary encoder according to claim 19 , wherein the rotary encoder consists of the first component, the second component and the distance sensor.
35 . The rotary encoder according to claim 19 , wherein the first component is formed in one piece and/or the second component is formed in one piece, wherein in particular the first component and/or the second component are formed as injection molding part.
36 . A device for winding and unwinding a cable guiding device, in particular an energy guiding chain, for a protected guidance of lines, cables, hoses, or the like between a first connection position and a second connection position movable relative to the first connection position; comprising:
a reel rotatably mounted on a holder for winding and unwinding the cable guiding device; comprising:
a rotary encoder according to claim 19 arranged on the reel for detection of a rotary motion of the reel when winding and unwinding the cable guiding device.