Pre-loaded two-lobe spring twist-on rearview mounting assembly

1. A rearview device attachment assembly comprising:

a mount including an edge around the periphery of mount that defines first and second recesses, the mount engages a windshield button; and

an attachment clip coupled to the mount at a central portion of the attachment clip, the attachment clip including:

first and second opposing loading members that abut the first and second recesses;

a flex portion extending from each of the first and second opposing loading members; and

a connection portion extending inwardly from each of top of the flex portions, wherein each of the first and second loading members of the attachment clip is pre-loaded during coupling of the attachment clip to the mount, but prior to rotational engagement of the attachment clip with engagement surfaces of the windshield button;

wherein the pre-loading of the first and second loading members of the attachment clip comprises creating an arched configuration with the attachment clip, with the central portion of the attachment clip disposed toward an engagement area of the mount while a portion of each of the first and second loading members are supported in the first and second recesses.

2. The rearview device attachment assembly of claim 1 , wherein an engagement area of the mount includes inner alignment features configured to align the attachment clip on the mount.

3. The rearview device attachment assembly of claim 2 , wherein the inner alignment features extend about a central portion of the attachment clip.

4. The rearview device attachment assembly of claim 1 , wherein the first and second recesses define peripheral alignment features configured to align the attachment clip on the mount.

5. The rearview device attachment assembly of claim 1 , further comprising:

locating features that include protrusions that extend outwardly from the windshield button.

6. The rearview device attachment assembly of claim 5 , wherein the locating features provide sensory feedback that the mount is fully engaged with the windshield button.

7. The rearview device attachment assembly of claim 1 , wherein the windshield button includes a vertical wall defining a stop that limits rotation of the mount relative to the windshield button.

8. The rearview device attachment assembly of claim 7 , further comprising: a ramp that provides smooth rotation during installation of the mount.

9. The rearview device attachment assembly of claim 1 , further comprising:

locating features that provide tactile feedback indicating that the mount has been fully secured to the windshield button.

10. The rearview device attachment assembly of claim 9 , wherein the mount includes locating troughs that engage the locating features of the windshield button.

11. The rearview device attachment assembly of claim 1 , wherein the attachment clip includes upturned flanges that assist in transitioning the connection portions onto the engagement surfaces.

12. The rearview device attachment assembly of claim 1 , wherein a sensor is positioned within an opening of the windshield button.

13. The rearview device attachment assembly of claim 12 , further comprising:

a sensor clip that retains the sensor to the windshield button.

14. The rearview device attachment assembly of claim 1 , further comprising:

internal abutment walls disposed on the mount.