Mazda CX-5 Introduction Manual page 15

of the body, and from the front frame to the A-pillar. In particular, the upper
branch frame, which diverts the load to the A-pillar, is a multi-functional part
that also works to cancel the upward motion of the front frame. To create this
kind of path, parts such as door hinges, which do not normally play a role in
absorbing shock, are important elements in the design. Naturally, the multi-
load path structure is adopted for lateral collisions and rear collisions as well
to function in the same way, thus greatly improving safety performance.
Optimized engineering process
To create a circular structure for the reinforcement, weld bonding was used
for the roof rail section. Previously, this structure was separated from the rear
frame due to the body assembly process. To bond this section directly, we
adopted a method whereby the parts are bonded together in advance using
the weld bonding method and then sent on to the assembly process as a
bonded unit. By adopting this method, we have achieved continuous bond-
ing, at the same time greatly increasing the number of spot weld points,
which contribute to the excellent body rigidity.
Copyright © 2012 Ford Motor Company of Southern Africa.
The multi-load path approach was also
adopted for individual parts. We focused
on directing the crash energy mainly
along the ridge lines of the parts, mold-
ing the front tip of the front frame into a
cross shape. In a conventional square
section, there are four ridge lines, but
when a cross is created there are twelve
ridge lines, and the shock is dispersed
more widely. By doing so, the energy is
then absorbed more efficiently, the
space in the engine room is more effec-
tively used, and there is also greater
freedom in exterior design.
Body
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