A positioning device includes a housing and a shaft that is able to be swiveled about a centrical position relative to the housing, at whose one end an element that is to be positioned is attachable. Furthermore, the positioning device has a swivel drive and a position measuring device. A cable, for the electrical connection of swivelable parts in the positioning device to a stationary unit, has a spiral-shaped course leading radially outwardly, starting from the shaft that is located in the centrical position.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a cross-sectional view through a positioning device according to an example embodiment of the present invention.
FIG. 2 is a bottom view of the positioning device with a housing cover open.
Claims
1. A positioning device, comprising:
a housing;a shaft swivelable about a centrical position relative to the housing, a first end of the shaft attachable to a component to be positioned;a swivel drive including a stator and a rotor, the rotor movable relative to the stator; anda position measurement device including two parts movable relative to each other;wherein the rotor of the swivel drive and a first part of the position measurement device are connected to the shaft in a rotatably fixed manner, the positioning device including a cable adapted to electrically connect at least one of (a) the shaft, (b) the rotor and (c) the first part to a stationary unit, the cable having a spiral-shaped course leading radially outwardly starting from the shaft located in the centrical position.
2. The positioning device according to claim 1, wherein the course of the cable is arranged such that the cable is at an angle of one of (a) at least 180° and (b) at least 24° about the shaft.
3. The positioning device according to claim 1, wherein the course of the cable satisfies the relationship:
4. The positioning device according to claim 1, wherein the shaft is swivelable about a swivel angle of one of (a) at least ±25° and (b) at least ±45° around the centrical position.
5. The positioning device according to claim 1, further comprising an electrical coupling arranged at a lateral face of the housing.
6. The positioning device according to claim 1, wherein a second end of the shaft opposite to the first end penetrates the housing.
7. The positioning device according to claim 1, wherein the cable is arranged within the housing, surfaces of the housing in contact with the cable being at least one of (a) lined and (b) coated with a material that is low in friction and abrasion.
8. The positioning device according to claim 7, wherein the material includes at least one of (a) a plastic material and (b) PTFE.
9. The positioning device according to claim 1, wherein at least one surface area of the cable in contact with the housing includes a material that is low in friction and abrasion.
10. The positioning device according to claim 9, wherein the material includes at least one of (a) a plastic material and (b) PTFE.
Patent Application
20070137373
