US 11,806,951 B2
Method for producing a structural subassembly and structural subassembly
Bernhard Staudt, Munich (DE); Tobias Preuss, Munich (DE); Torsten Flemming, Roehrmoos (DE); and Florian Spirkl, Bodenkirchen (DE)
Assigned to Bayerische Motoren Werke Aktiengesellschaft, Munich (DE)
Filed by Bayerische Motoren Werke Aktiengesellschaft, Munich (DE)
Filed on May 23, 2017, as Appl. No. 15/602,615.
Application 15/602,615 is a continuation of application No. PCT/EP2015/075244, filed on Oct. 30, 2015.
Claims priority of application No. 10 2014 224 040.9 (DE), filed on Nov. 25, 2014.
Prior Publication US 2017/0252987 A1, Sep. 7, 2017
Int. Cl. B29C 70/48 (2006.01); B29L 31/30 (2006.01); B29L 12/00 (2006.01); B29K 105/08 (2006.01)
CPC B29C 70/48 (2013.01) [B29K 2105/0809 (2013.01); B29L 2012/00 (2013.01); B29L 2031/30 (2013.01); B29L 2031/3055 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A method for producing a structural subassembly for a motor vehicle having at least one first profile component of fiber-reinforced plastic and at least one connecting component for producing a node connection of the first profile component with a further profile component, the method comprising the acts of:
a) providing a mold having at least one mold half, which has a cavity which corresponds essentially to the first profile component to be produced with at least one connecting component molded on in one piece;
b) placing a multi-piece textile reinforcing material in the mold;
c) introducing a flowable plastic material under vacuum into the mold wherein the multi-piece textile reinforcing material is saturated by the flowable plastic material;
d) hardening and/or cooling the plastic material, wherein
the multi-piece textile reinforcing material has a first textile semi-finished product for the profile component as well as at least a second textile semi-finished product for the connecting component both of which touch and overlap in the mold,
the first textile semi-finished product and the second textile semi-finished product are fiber preforms,
the at least one connecting component of the node connection has one shell part into which one or more further profile components are insertable,
inserting at least one further profile component into the one shell part to thereby complete the connection, and
the at least one connecting component of the node connection is produced in one piece with the profile component in a single production process that takes place in the mold; and
e) placing two shell parts together to form a cavity, which comes together to enclose therewithin the further profile component of the motor vehicle.