COMPOSANTE D'UN MATERIAU PLAT, MULTICOUCHES, NOTAMMENT POUR LA CONSTRUCTION DE VEHICULES AUTOMOBILES

COMPONENT OF A MULTILAYER, FLAT MATERIAL CONSTRUCTION, IN PARTICULAR FOR MOTOR VEHICLES

Abrégé anglais

ABSTRACT
The invention relates to a component of a multilayer
flat material construction, in particular for motor
vehicles, whereby a number of preforms (1, 2) of flat
material, of which at least one of the preforms (1)
which forms an outside face of the component is of
sheet metal, are perfectly jointed to one another by at
least one type of joint element (3, 4) which has been
produced in an extrusion or pressure-joint process.
The invention is characterized in that for at least one
of the types of joint-element (3) these each consist of
two superposed, opposite edges of a square breach (31)
formed by an H-shaped cutting punch which passes
through all preforms (1, 2) on flanged edges (32, 33)
provided on an external surface of the component, which
are formed by the material sections of all preforms (1,
2) resulting from the H-shaped cutting punch.

Revendications

The embodiments of the invention in which
an exclusive property or privilege is claimed are
defined as follows:
1. Component of a multilayer flat material construc-
tion, in particular for motor vehicles, whereby a num-
ber of preforms of flat material, of which at least one
of the preforms which forms an outside face of the
component is of sheet metal, are perfectly joined to
one another by at least one type of joint element which
has been produced in an extrusion or pressure-joint
process,
c h a r a c t e r i z e d i n t h a t
for at least one of the types of joint-element (3)
these each consists of two superposed, opposite edges of
a square breach (31) formed by an H-shaped cutting
punch which passes through both preforms (1, 2) on
flanged edges (32, 33) provided on an external surface
of the component, which are formed by the material
sections of all preforms (1, 2) resulting from the H-
shaped cutting punch.
2. Component of a two-layer flat metal construction
according to claim 1
c h a r a c t e r i z e d i n t h a t
the joint elements of this type are combined with pres-
sure joint-elements of a different type, whereby the
joint-elements (4) each consists of a short strip (41)
of superposed areas of preforms (1, 2) which are ex-
truded through the surfaces of the preforms and an-
chored at the rear by a common wide compression set
(42).

3. Component according to one of claims 1 or 2,
c h a r a c t e r i z e d i n t h a t
at least one of these types of joint-elements (3, 4) is
combined with a different type of penetration joint-
element, whereby in each case
a) all planar superposed preforms (5, 6, 7) have local-
ly coincidental penetrations in the shape of round
holes (51, 61, 71) in the area of the penetration
joint-element (8),
b) the hole (51) in a sheet metal external preform (5)
is smaller than the holes (61, 71) in other preforms
(6, 7) and whereby
c) the edges around the smaller hole (51) are pressed
out of the plane of the external preform (5) through
the holes (61, 71) in the other preforms (6, 7) and
form a collar (52) which protrudes from the hole
(71) of the other external preform (7) and which is
externally flanged.
4. Component according to one of claims 1 or 3,
c h a r a c t e r i z e d i n t h a t
at least one of the preforms (6, 7) connected to a pre-
form (3) of sheet metal consists of a different
material which cannot be cold-formed.
5. Component according to one of claims 1, 3 or 4,
c h a r a c t e r i z e d i n t h a t
one of the preforms (8, 7) connected to a pre-
form (5) of sheet metal consists of a thermally-insu-
lating material.

6. Component according to one of claims 1, 3 or 4.
c h a r a c t e r i z e d i n t h a t
one of the preforms (6, 7) connected to a pre-
form (6) of sheet metal consists of a puncture-proof
material.
7. Component according to one of claims 1, 3 or 4,
c h a r a c t e r i z e d i n t h a t
one of the preforms (5, 7) connected to a pre-
form (5) of sheet metal consists of a vibration-absorb-
ing material.
8. Component according to one of claims 1 through 7,
c h a r a c t e r i z e d i n t h a t
at least two preforms of the component are additionally
perfectly joined through gluing together.

Description

2009893
~IT~E
~o~ponon~ of ~ multilay~r, ~ materi~l con~r~tion,
1n part1cular for m~or veh101~o.
D~SOR~PTI~N
~he invent10n relate~ to a co~r,ponGnt of a m~l~tlaYnr
~lat mat~r1~1 Gons~ructiot~ par~1~çular ~or ~otor
vohl~l~s, wh~reby a num~r of Pr~fq~ms o~ flat ma~ori-
~l, of wh1ch at l~a~t on~ of the pref~or~3 wh1ch forms
a~ o~ld~ f~ce o~ the component ~ ~f sheet ~e~al, ~e
p~r~o~ly jo1n~d ~o ono anoth~r by ~ 'least on~ ~yp~ of
o~nt element wh1ch h~ n: p~du~od in an extr~ls~on
or pr~ss~r~Jo1nt pr~ s.~ ferent technl~o~ are
lroady kn~wn f4~ "~o~ct" ,~otn~ng pr~rms cf a f~at
m~teria1, c~.g o~ ~tat :6~:et~1 w1thou~ tne a~dition
1 :b~nd ~ n~ n~
n~ o~ ~h~ a techh~q-~os l~ pr~sur~o~n~n~, J,S d~s-
crtbed 1n 'Ghe ltmlted pub~le~ n o1' t;h~ ~rad~ ,~ournal
tahl und ~ls~n",: ~pr~l 19a6, No. 8. ~he 6upe~p~sed
ehee~: m~t~l parts ~r~ h~r~by in~e~ml-ttently punotur~d
at t~ ~oints ~y ~ ~oo~ cons;s~l~g ~f a d1e and cut-
t~n3-~xpan~1ng die-plat~ ~1n such 2 w~y tha~ ln ~a~h
3S~ g~m2~ hg~.r~ rom ~ she~t
o~a1~n i~ lon~ s pr~ss~d out.o~ its level ~n~
: c;ompr~ss~d f~at immed1ately be10w th~s. Th~ ~heet m~
stri,~ ~hlch ha~e ~b~n th~ared o~ a~ 5~il'l cc:nnected
o~the~ ~hQo~ me~at ~ their end~. Th~ compr~ss;~-~ 6et-
t;ng ~o:f~:the~ex:~ru:d~d tr!~terlal b~low the me~l Gh~s is~
d~ 1 Yo~ P~r~ r tl~ tr~ h o~ t~le joi nt
elemen~
Only~tw~-S~)P~PO:S~ a~ p~rt~ (~h~t~ can be c~-

200989;~
- 2 ~
nec~e~ by m~ans ~f t:hl~ ~xt~rusion or preSsur~ o1ntlng
t,~chn Iq~e at any one t~me.
,
In th~ meantime, a p~n~ra~ton-Join1ng teohn1que 7S
kno~n ~rom the ~ M (~erman U~-lity Modsl ~ ~ 3~ .7
w1th whl~h mor~s than two superpos~ ~lat p~rts, o~
wh~h the 1~t~rnal layers can also h~ o~ ~ mater~al
~her khan sh~ m~al, ~.an b3 Jo1n~d ~osesh~r~
With this t~chnique, all s~perp~sed~ interconne~te~
pre~orn~ kh~ c~rnpon~n~ ~sptay 1OCA11Y co;nci~n~al
dr111 ho~qs a~ the poin~s o~ connec~o~, th3 dr~l1
holes o~ 3.n external pre~orrn ar~ ~m~ r t'nan tha ~ri 11
5 o~ ~h~ r~n~in1n~ pre~orms. On the prefornl~ with
the ~m~ r ~Ir ~ l l holes th~ ~dges aro~nd ~ha dr7 11
holes are pre~ssed o~ th~ 1eve1 ol~ this~ Pre~orrr
~hrou~l~ ths dr; 77 holes of ths oth~r preforms ~Y
dlan~ r ld~nt~G~l wlth ~ho d~an~eters of the corr~-
~ondlng drill: h41es ~h ~h~ other prQ~ m~ 80 that
'ch~y f~rln c~11ar-1 Iko n~ck~ whi~h protrude vertica11y
h~ the B~rf ~cg o~ thos~ pré~Orrn~ . The ~xternal ~d~
o~ th~s~ t1~r-11ka neoks ~ra ~h~n oxterna~1Y ~lan~d
o tha'c 'chey ~v~rlap ~r :th~ ~d~ the dr~ 11 holes
n th~ c)ther pr~form~ and are pr~sse~ mly ~galns~
: ~no ~n~h~r,
: thl$ p~ t~t1an-~oining ~echni~a ha~, comparod ~o ~ho
~ oinlng t~c~n~ d~r1bed ~reYto~y, the ~dv~ntage
3~ hat mor~ than ~o layer~ C~n ~ io~n~d to er/e anoth~r
wtth ~h1S metho~ aw~vert thts a~v~nta~ ls ~ountel-
b~ rlcecl by th~ disadvantage that more op~r~tions are
requl r~d h~r~, n~m~ly 1st the productlon oP tha p~n~-
. tr~tions ~nd Zr~d th~ ~xtru51~n ~ tho ~4 ar~ aro~Jn~
th~ s.n ~ r. 1~o1 ~s ~ the ~x'cernal components t~rough
th~ cc~rr~pond i n5 1 ar~er ho1 B~ o~ ~ho oth~r comp~n~ntq
and ~7angSn~ o4 the protrud;ng etg~.
uch Jc~ntn~ techn~ue~ have bsc~ma mor0 lmp~rtant 1n
~7~ ~ ~
' ' ' :. ' ' ' . ' . ' . ' ' ' . . ' . ' ' . ' '. ' '

200?~9~
~ 3 ~
rec~h~ y.~ars ~au- e o~ th~ one hand th~y do not s~
~c~ the Jo1ned compon~nt~ t~ th~rmell 10ads. l'h1~
a~ ds m~r~a1 sSr~sses ~nd ha~ no ~ /a in~luen~e
on tha corr~sion prop~rt~ Furth~rmore, th~y a~o
h~v~ tha ~re~ 4~1vanta~e, f~r axarnp~ c~ r~ to alec-
tr1c~1 re3~stan~e spot weldtn~, that a numb~r o~ ~on-
nections ~ joint~) c~n be pra~e~ ln ona t~l stroka -
or t~o op~rati.on~.
rh~ 1 n~ent, i on i ~ b~sed on th6~ c~ ~ cles i gn i ~g the
connecttn~ ~lemenk~, wh1ch have ~n m~nu~ Jr~cl by
w~y of jo~nlng techniques, 1n o~nlpon~n~G~ o~ th~ typ~
dol~n~d ~ the ~e~nnln~ ln ~uah a way that wh; 1~ th~
a~v~tages of ~h~s t~chnique ar~ ed, the d~*~d-
v~nta~e~ ~ the d1f~erent ,~nt ~lem~nts ~ecorne tnef-
r~c~ 8 a~ far ~o po~s1b1e. If necessary, moro th~n ~wo
s~Jp~rposed pr~f4rm~ of a ~la~ material sh~u1d al~o
~bl ~ t~ ç~nnect~d ~ ~ne Ane~h~r 1 n c~n~ too1 ~trok~,
wher4by at 1~a~t one pr4~0rrn can ~e c~P a flat mater1al
o ~h~ r than shzet Ine~t~ ~,
,
oh,~c~ $l3t 1S 8~1v~d ac~ordtng to tha 1nven~or~ in
~h~t tl~e~ jo~ ont,s d1~pl~y ~h~ ch~racterl~1ng
clau~e o~ claim 1,
Impr~V~m~rlt~ and a1t~rnative salutions ar~ evident from
c1a1ms 2 througt~ ~,
,. . .
Th~ Y~ on ~ill b~ descri~ed ~n detail ~n ths fo~-
lowi n~ w;~h re1'erein~ ho draw1ng wh1ch repr6~2nt8
the ih~eht1on ~y w~y o~ ~Ainplc~.
:: F1~. 1 shews a ~ iS-59Ct~ll thro~ h ~ ~c~l~n o~ ~
cO~p~n~n~. Tl is çons~ts o~ two pre~orn~ o~ 6hee~
:: rneka~, wh~h ~r~ perf~ctly jo~ned ~o o~e ~nother
hr~h diffsr~n'G t~fpes G1' ~oint elements, n~me1y a
pc~ p~nG~træ~ti~n~ n~ hl~mf~ln~ 3 ~ng ~ ~Y~ g~ ~n
,::,
I` ~ .

_ 4 ~
ts~l~ more w~ known pres3ura-ioir-t element ~.
. .
~he p~n~tral:;on-J~;nt ~l~ments 3 ~aoh c~nstst of t~
~u,c~rposed, opp~s1t~ ed~e~ o~ Pl sq~Jare ~reach, 31,
form~ by an H-shap~d cuttin~ p~n~h wh~ch ,oasses
thro~l~h bot h preform~ , w~ th f l ange~ od~-3s ~, 3
pr~sed on~ ~n external eur~ace o~ the con ponen~,
which ~re ~orn~ed by ~n~tn~ the mat~r~al socttons whi~h
hav~ be~n pa~lY ~p~r A~ed with the H-~hap~ incision
of the pr~form3
Th~ pr~ss-~r~ c.~nt a~amantS 4 ~a~h eons16t o~ ~ ~h~r~
str~p 41 ~ sl,iPQ~po~ed arsas o~ b~h p~ rmi~ 1, 2
~ht ch ar3 extr~ th~o~ h the sur~acqQ of tha prs~crms
a~d are anchor0d ~ ~h~ ~ear ~h~ou~h a wid~ ~ompr~sston
t ~ 2 ~ ~
F~, 2 shaw~ tl~ sam~ &~}Ct~Otl ~f ~he compohon~ pr~m
above .
The~e two ~:Yp0~ o~ ~1n~-~1emen~ h~v~ khs ~r~a~ advan-
'c~g~ ~chaS ~h~y c~n both b~ p~duced ln onty on~ tool
s~roh~, ~he~ r com~1n~ion 1 n on~ ~ntp~nent h~ ~hO
a,~vant,age ~h~t thelr p4~1t~ve work1n~ ~h~ract~rist;cs
complement ~ noth~r and tha n~g~tiv~ work~ns charae-
tor1s~c~ are w~k~ d: the pqnstrat1On jotnt~ nts 3
h~ve ~he ~dvantage ~chat th~y ha~o ~ v~ry h~h ~n~t4
s~f~n~h vertical ~ th0 connect~ol- p~ne and comp~n-
e the w~kn~es ln thi s res~oc~ o~ tha pressurejo~nt-ele~ont~ 4.
On th~ ~her hand 1 th~ di sadv~n~a~es o~ th~ p~n~tration
~,~
n~ nts 3, n~mely tha~ th~y r~ca tha ~Xu~al
&l;r~ng~h o~ 'che c~nponer~t ~n ~h~lr vlo~nlty, c~n be cut
ck to 2~ m~n1mum ~hroug~l a oom~lnat10n w~h pressure
nt-el~men'cs 4, It ~s le~t up t~s tha con~p~n~r~t en-
gine~r~ t,o d~ wh6re tn~ p~netratlon ~o1n~-elem~n~
'"~ ~ . ' . ' ' . ' ' " ; . ' . . ' ' ~ ' ' . . ' . ' . ' . ' ' "

2()~3989^3
a.,cord in~ ~o c1~im 1 ar~ t~ mpl~y~ on tha compo-
nl~nt, ~n~ where the known pres~ure joint-~lem~ s 4 can
be u~od.
F l~. 3 ~ho~ ~ oros~-~e~t~ion through ~ sec~ion Of a
component cons~st1ng of tihree fl~ materlal pro~orrn~,
F~s. 4 ahows th~ ~e~t,ton ~) o~ ~19. 3 frc~m ~b~y~,
In th~s ~ Gd~ent the th~ee p~f~rm~ ~l 6, 7 ~re p~r-
~t1y ~oin~d to ~e ~not~?er by ~ typo o1' p~n~t.r~t,ion
~o1r,t~1elllent ~3 whlch ~ ~n itscl~ known, )1~re. a11 ~h~
pr~Porms 6, ~, 7 e~ch hav~ locally ~o~ncl~ntal pen~-
~rat ~ ~n~ l n ~ho shap~ of ro~nd hol es S 1, 6 11 7 1 1 n the
~rea v~ ~h~ pene~ra~ jotnt-~le~nent ~. The hol~s ~1
~t' ~n ext~n~l pref~rm ~ sheet nle~Al ~r~ ~mal 1er than
tha corrasp4ndtn~ h~1e~ ~1, 71 ln ~h~ two ~th~r pr~-
f~rm~ ~,. 7. Iha edg~ ~reas ~round th~ sfflall~r h~le 51
o~ th~ ~x~ern~l prsf~r~n 5 a~ pr~ss~d o~t ot ~he ~tane
ot the pre~orm ~ thrau~h tha holes ~1 and 71 of th~
o~her two pr~ rn~ ~, 7 s~ that t:hey fot^~ a ao'l `1 Q.r B2
Yh1ch pr~tr~* ~hro~J~11 the ho~es 71 o~ tho ~her ex-
ter~al pro~rm 7 J.n~ wh70h t~ ~xt.ern~tly f'lang~. Tha
t~r~ pref4rms $, ~, 1 ar~ ~h~J~ pro~s~d f 1 r rlll y togsth~r
and ar~ ~perfoct~y ~ ne~,
Althoush ~hiJ tyP4 oP ~lnt~ ment 8 has the d1sadvan-
tag~: that tt car~ m~nu~ctur~ w~h onty on~ tool
strok~, as was tl~ ase wtth ~h~ ~h~r two 'cypes o~
Jo1nt ~tement 3, ~ as d~5crib~d abovs, th~ pr~orm
conn~ct10n~ m~d~ ;n th~s mar~nar ar~ very st~bl~, nGt
onlY w1th r~spec~ ~o a ~ertica7 t~ns~le lo~d or~ ~h~
onnect~on p~ne, but ~1so w~th re~p~ot to ~r~tY.
The~a pen~tr~tl~n jo;nl:-ralem~nts 8 accordin~ to ~1A~m a
F~g. ~ a.nd 4~ al~o ha~e the ad~ar~a~ d~
i, .. ~; .. ;.,, . .. . .. - -. .. ` , , i . ,~ .. . .. , ~ . . . . ..

20~9893
p~ne~ra~on J~lnt-el~mer~ts 3 a~Cord~tlg t~ cla~im 1 ~f1g~
~ n~ that, mor~ ~h~n two prQ~arms can be ~oi n~d
together, of ~h~ch only on~ pr~forrn must be ~ flctlle
sh~t n~q~ least ~ne o~ the other pr~orm~ ca~
o~ a d-~ferent mater;al ~hlch cannot bo co1d-formed and
~hlch h~s vibration-a~s~l b~ng. ~chermal1y ~nsulatlng p,nd
pun¢ture~pr~ proper~les.
`'' ~ :

Dessin représentatif