Protection assembly with an operating knob for an electrical potentiometer

摘要

A protection assembly with an operating knob (1) for an electrical potentiometer comprises a substantially tubular housing (2) defining a longitudinal axis (L), an electrical adjustment device (3) held within the housing (2) and having an adjustment shaft (4) rotating about the longitudinal axis (L) and an internal variable resistor interacting with a longitudinal end (5) of the shaft (4), an operating knob (6) attached to the other end (7) of the shaft (4), limit stop means (8) for restricting the rotation of the shaft (4) within a predetermined maximum angle of rotation (a). The knob (6) comprises an annular anchoring member (9), which is designed to be removably coupled to the housing (2) and an operating member (10) coupled to the shaft (4) and rotating relative to the anchoring member (9). The anchoring member (9) and the operating member (10) have mutually facing cylindrical surfaces (11, 12), with said limit stop means (8) interposed therebetween to limit the infiltration of external impurities.

主权项

1. A protection assembly with an operating knob for an electrical potentiometer, comprising:
a substantially tubular housing (2) defining a longitudinal axis (L); said housing (2) being designed to contain therein an electrical adjustment device (3) having an adjustment shaft (4) rotating about said longitudinal axis (L) and an internal variable resistor interacting with a longitudinal end (5) of said shaft (4); an operating knob (6) attached to the other end (7) of said shaft (4); limit stop means (8) for restricting the rotation of said shaft (4) within a predetermined maximum rotation angle (α); characterized in that said knob (6) comprises an annular anchoring member (9), which is designed to be removably coupled to said housing (2) and an operating member (10) coupled to said shaft (4) and rotating relative to said anchoring member (9), said anchoring member (9) and said operating member (10) having mutually facing cylindrical surfaces (11, 12), with said limit stop means (8) interposed therebetween to limit the infiltration of external impurities.