Abstract:
The present invention comprises: a driving shaft extended in a specific direction and rotated on the specific directional axis; and a bearing composed of a fiber reinforced composite material and surrounding the outer surface of the driving shaft so as to form a gap separated from the surface of the driving shaft at room temperature. The bearing comprises protrusion parts. The present invention does not need an additional lubricating material by utilizing the fiber reinforced composite material and can increase rotation efficiency using the protrusion parts. The composite material forming the bearing is assembled to the driving shaft and forms the gap for rotation using the difference between the volume variations of metals because it has a low volume variation rate depending on temperatures. Also, the manufacturing process is simple.
Abstract:
A position sensor according to an embodiment of the present invention includes: a base substrate; a resistor connected to electrodes on the base substrate to form a resistance between the electrodes; a protective layer provided to cover the resistor and having through holes spaced apart from each other along the resistor to partially expose the resistor at a predetermined interval; contact members disposed in each of the through holes and electrically connected to the resistor; and a conductive brush movable together with the detection target and coming in contact with the contact members so that an electrical signal to calculate the location of the detection target is generated, wherein the conductive brush continuously makes contact with the contact members.