1. Field of the Invention
The invention is related to an external rear view mirror assembly comprising a positive connection that fits mirror components as a support frame mounted to a mirror housing or shell. More particularly, the invention is related to method to assemble a rear view mirror in a few steps.
2. Description of the Related Art
External mirror assemblies are ubiquitous for contemporary motor vehicles and have long been used to aid the driver in operating the vehicle, especially in improving the rearward view of the driver. Selected components of the mirror assemblies must be connected during the assembly process. For example, a tilt actuator assembly used to adjust the mirror to provide a proper field of view is typically mounted to a rigid frame within the mirror assembly housing and is operably connected to a reflective element. The rigid frame is typically mounted within the mirror assembly housing to provide structural support to the housing and connected the mirror assembly to the vehicle. The various connections are typically made with threaded fasteners, such as screws. The fasteners are separate components which an assembler must select in the proper number and properly install in order to properly assemble the mirror.
At times, the correct number of fasteners may not be installed. Also, the fasteners may not be tightened to the proper torque, thereby loosening over time so that the mirror assembly no longer operates satisfactorily. The failure to install the correct number of fasteners or to tighten the fasteners to the proper torque requires a costly replacement of the affected part(s) and can contribute to a reduction in vehicle safety due to operational failure of the mirror assembly.
One aspect, the invention relates to an improved vehicular mirror assembly comprising a mirror bracket adapted to be mounted to a vehicle; a mirror housing mounted to the base and comprising a rearwardly-facing opening; a reflective element mounted within the mirror housing in register with the rearwardly-facing opening; a tilt actuator mounted to at least one of the mirror housing and the bracket, and to the reflective element for tiltably actuating the reflective element.
In prior art as U.S. Pat. No. 7,448,589 a solution is disclosed that comprises: a snap-fit assembly for interconnecting selected components of a vehicular mirror assembly, the components comprising a mirror housing, a mounting frame having at least one of a first mounting aperture. The snap-fit assembly comprises a first mounting stud with a first portion having a first diameter and a second portion having a second diameter smaller than the first diameter. The second portion is adapted for snap fit communication with the first mounting aperture and the first portion is adapted for supporting communication with the mounting frame.
The snap fit solution according prior art connects support frame and mirror housing several connectors to fix the components. For the snap fit means have circular bodies more than a single mean is necessary to fix components rigidly without the possibility to pivot around one snap fit mean.