Method of assembling vehicle top structure

Abstract

A rigid vehicle top of unitary construction and method of making the same is provided. The rigidity of the roof and headliner portions allows for the complete off-line assembly of lighting systems, switches, clocks, environmental control apparatus and decorations. Additionally, a method of converting an existing passenger vehicle is provided.

We claim: 
     
       1. A method of converting a passenger compartment of a motor vehicle of the type bound by body side walls and a roof structure attached to the top of said side walls, comprising: cutting through the side walls at a position below the roof structure and removing the roof structure and upper portion of the side walls as a unit from the vehicle passenger compartment,   forming a vehicle roof,   forming a relatively rigid self-supporting headliner separate from the vehicle roof, including means for accommodating vehicle lighting fixtures .[.and the like..].   attaching said self-supporting headliner to the top of the cut side walls of the vehicle,   attaching said vehicle roof on top of said headliner and to the top of the cut side walls of the vehicle to form a vehicle body top structure,   whereby assembly workers are allowed great freedom of movement and ease of access in assembling said headliner and said vehicle roof.   
     
     
       2. The method of claim 1, further comprising affixing electrical wiring to the headliner from above after attaching the headliner to the side walls and before attaching the roof to the side walls. 
     
     
       3. The method of claim 1 or 2, further comprising affixing duct work to the headliner from above after attaching the headliner to the side walls and before attaching the roof to the side walls. 
     
     
       4. The method of claim 1, comprising fastening said roof part and said headliner by ceiling fasteners to maintain rigid contact between said roof and headliner. 
     
     
       5. The method of claim 4, comprising attaching decorative panel means to said headliner to conceal said ceiling fasteners. 
     
     
       6. The method of claim 1, comprising forming said roof with attaching flange means, wherein said attaching of the roof includes placing said attaching flange means in contact with at least one of said headliner and said side walls. 
     
     
       7. The method of claim 1, wherein said forming said headliner includes forming of a raceway for electrical or air conditioning duct work in said headliner. 
     
     
       8. The method of claim 1, wherein said forming said headliner includes forming a rear molded storage compartment and a front molded in console in said headliner. 
     
     
       9. The method of claim 1, wherein said forming said headliner includes forming a flattened area in said headliner to provide direct seat lighting. 
     
     
       10. The method of claim 7, wherein said forming said headliner includes forming a rear molded storage compartment and a front molded in console in said headliner. 
     
     
       11. The method of claim 10, wherein said forming said headliner includes forming a flattened area in said headliner to provide direct seat lighting. 
     
     
       12. The method of claim 7, further comprising affixing electrical wiring to the headliner from above after attaching the headliner to the side walls and before attaching the roof to the side walls. .Iadd. 
     
     
       13.  A method of converting a passenger compartment of a motor vehicle of the type bound by body side walls and a roof structure attached to the top of said side walls, comprising: removing the existing roof structure at the top of said side walls from said vehicle passenger compartment;   forming a new vehicle roof part;   forming a relatively rigid self-supporting headliner, including means molded therein for receiving, structurally supporting and positively locating vehicle accessory component fixtures;   attaching said new vehicle roof part and said headliner to one another to form a relatively rigid unitary vehicle body top structure;   then affixing said vehicle accessory component fixtures to said relatively rigid unitary vehicle body top structure;   thereafter attaching said relatively rigid unitary vehicle body top structure as a preassembled unit with said accessory component fixtures therein to the vehicle to replace said existing vehicle roof structure previously removed; and   whereby assembly and conversion of said compartment can be made with minimal on-site modification and installation at the vehicle body itself. .Iaddend.