Vehicle body structure producing method and flowable resin damming arrangement therefor
US5102188A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 26, 1989 |
| Grant date | Apr 7, 1992 |
| Priority date | — |
| Expiry date | Dec 26, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D65/00
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A method of producing a vehicle body structure having a pipe-shaped structural part reinforced with a hard and high density foamed polyurethane resin. The method is carried out as follows: First, a plurality of pressed panels are prepared, the pressed panels being to be joined to form the pipe-shaped structural part. A band-shaped foamable rubber which has not yet foamed is attached onto the inner surface of each of a plurality of panels at a predetermined position. The panels are joined to form the pipe-shaped structural part. The foamable rubber is foamed under heating in a painting step to form a foamed rubber at the predetermined position. Then, a foamed member of a soft foamed polyurethane resin is inserted into an opening formed within the pipe-shaped structural part and defined by the foamed rubber in order to constitute a dam section for blocking the pipe-shaped structural part at the predetermined position. Thereafter, the material of a hard and high density foamed polyurethane resin is poured into a space defined by the dam section within the pipe-shaped structural part and hardened within the pipe-shaped structural part.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.