Instrument cluster gauge assembly

Details Instrument cluster gauge assembly Instrument cluster gauge assembly

G - Physics

01

D

G01D 13/22 (2006.01) G01D 13/00 (2006.01) G01D 13/02 (2006.01) G01D 13/04 (2006.01)

Patent

CA 2156661

- 12 - An instrument cluster gauge includes a pointer assembly and a gauge movement. The gauge movement has a staff with a constant diameter. The pointer assembly includes a bushing intended to be placed over the staff when the pointer assembly is mounted on the gauge movement. The bushing has a bore having a lead-in portion providing radial clearance with the staff; a main contact portion with a slight interference with the staff; and a clearance portion providing radial clearance with the staff. The geometry just described facilitates the mounting of the pointer assembly on the gauge movement to a predetermined depth rather than to a predetermined force. Further, the assembly force is defined by design and is therefore more consistent than where a pointer assembly is mounted on a gauge movement staff to a target force. Also, the lead-in eases assembly of the pointer assembly onto the staff, facilitating flexible manufacturing. The bushing further has a face with a stippled surface. The stipple on the face of the bushing facilitates the use of machine vision in the mounting of the pointer assembly on the staff.

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