CA2220615A1

CA2220615A1 - Braking and damping element for movable cabinet/furniture components

Info

Publication number: CA2220615A1
Application number: CA 2220615
Authority: CA
Inventors: Peter Jochum
Original assignee: Individual
Current assignee: Grass GmbH
Priority date: 1996-11-08
Filing date: 1997-11-07
Publication date: 1998-05-08
Also published as: EP0841451A3; DE19717937A1; EP0841451A2; AT2276U1

Abstract

The invention is a braking and damping element for movable cabinet/furniture components, which consists basically of a cylinder element in which a radial expandable lengthwise-moving piston is placed. The piston is fitted rather snugly in the cylinder bore hole and has a front-sided notch, which is connected to an air-filled hollow space formed by the cylinder and the piston.
The force of pressure from the piston's connected cabinet/furniture component compresses the air found in the hollow space and notch of the piston which results in a radial expansion of the piston.
Braking action results from the stretching or expanding of the piston diameter, which additionally occurs with the above-described damping action resulting from the air compression.

Description

l ~ U 7 ~ ~17 l U: 3 7 ~'AA ~ U 7 ~ 5 ~J (1 h l Ll'A'l'l~ l ~K ~i'l'U(~'l'U 1~1 0 U 7 Br~king alld Dampin~ Element for Movable C~binet I Furnitur~ Components The inven~Lion p~ i,.s to a brak~n~ and damping ~ nt fo~ mov~ble cabinet / ru co~ untC, which is ~ced espe~i~lly i~or doon, lifters~ slide doors~ drawers and a~ythin~
similar.

1~2 mping elements fo~ movable ~binet I ru.~lu~e components ha~re already ~een made known. I:~iselosure ~lic~Glion DE~I 81 30 405 describes ~ dAn~ element for cabinet I rul~iLul~ doors or d;~a~ers for the ~nSiti-~n from the open position to the closed position.
Ihis kllown system uses a nlbbe~ (or o~er elas~c m~t~riAI) buffe~, which is placed between the movable pa~s and ~e fixed ~inet / ru~ onlphn~nt The thic~ness of such a damp~g member Is limited~ for e~ le, the reveal or gap between the door and the cabinet J ~ur"~L~ co~ eLIL mu~t not be too l~ge for ~e doo~ insert. I'he result is that ~c ~ r~ and abso.~llion ~A~n~Qce of the ~l~se~ amrin~ cl~ ..e"l i~
r~ ed ~ecause a ~mrin~ element of ~i~ ~pe does not have a progressi~re shock a~o~lion ac~on and no p~e-br~kin~ the mova~le cab~net/ rulwl,lrd con.~rl~.l s~lls~ikes the fixed c~inet I fi~ ure cu~ )ondlll in a relatively stTon~ manner.

With ~he ~ sure p!Ihli~ n ~E-OS 27 08 ~4~ a damper ~es~ .cp~.i~IIy for jointed hin~es was made lcno~ Such a flex~ble duc~le damper clcll~eI~l is dpqi~n~ so tbat wben the hinge swi~s~ shortly befo~e ~e hinge's end pos~on is rea~hed, the ~n~pe~ element forms so th~t a c~rtain damp~ng effeGt is a~hieved :~ut ~s bef~re, no ~log~essive damp~ng effect is achieved so that the hinge's c;lo5in~; force ~or~s ~j~ct the fle~ble ~lA~rin~
elelnent.

T~e purpo e of the ~re~I~t~A invention is to p~pose a bral~g ~n~ in~ element~
de~cribed in the int~odu~tion~ that is equ~lly suitable for all Tnov~ble cabinet l fi~rniture ç~r,.~ .,t~i and makes a souIId-al)so~i~ and shock~sorl-ing closing ofthe movable çabinet t finni~re co~.~yoI~l.t~ pos~;hle due to a pro~essive ~rinf~ action ~he ~., e~ ~l task is solYed by the iden~i~n~ ''h~ Cs of Patent Claim 1.

l~U~57~ lU~ 'A~' 571U ~U/ 75UU l~lLl'A'l'l~l~,h '7'1'U~;K'l'U l5~1UU~

n~l~rnent~l eh~r~e~li"l;c ofthis in~ention is 1:hat the b~, and d~mrir~ elemer~tb~sic~Jly c~ isl s of a cylinder-~e sleeve in which a slide ~i~ an ~;~ya~.dab1e piston is loc~ted, movable in a ~adial direction.

The piston includes a ~ylinder with a hollo~r space so that ~y pr~ssi-.~, th~ piston in the cyl~nder's hollow spaee and by the for~e acbon ofthe movable cabinet / fumiture cor -~ he air cQ~ od there~n b~m~s COll~pl'~;5e~ T~e piston is d~ci~d so the ~esul~in~ compressed air ~om the piston's inser~on results in a radial eYran~iort or spreading of ~e p-ston, ~at ~n add*ion to ~e ~1.3r"~ effec~ d~0 to ~e CU~J~ s~ed air, causes abraking effèct because ofthe piston's f~iction on ~e cylinder's inner ~N~II.

ef~,l~ly the p~ston should have a~ e~sion sleeve made of flexible tll~t~ , whichuul~ds the piston totally or par~ally so ~at ~e desired braking a~t~on c~n be upped by an inc.~s~d coefficlent of l~ictiorL

Cvlnpa~ed to the prior technology, tbe p~esent invention achieves the adYanta~e ~at the mo~able cabinet I f~mih~e u~lnron~nL~; progressively b~ke ~nd ~ r~ before reachin~
the closed pvsit~on. So~ for ~ ml~le, ca~inet / ~nil~l~e doo~s ean still have hinges ~,o~l)plet~ly ~nat~ll~ thatllave pfe~lele~ ~ ~;nP-1 closi~g action~ resultin~ in cabinet I Lilll.iLur~, doors tha~ close slowly and in ~L controlled manner.

Another adva~e is th~t ~e inve~on-related b~lc~n~ ~nd da~lle~ ele~e~t is pQ~ l'-n~ from the t3rpe and desi~n of ~e cabinet I funliture compo~.e,ll~ so tba~ ~he ca~inet I rl.n,;~ inges can be used as a sep~ braking eleTnent and ca~ therefore, be used universally.

nother ad~rantage is that a~er le~ the closed positi~ hat is;, when the closed door or d~awer is opened), the bra~i~ and .1~."1,;"~ ele~ t returns to its own in~tial (closed posifion) by mea~s of i~ o~n pull-back fo~ce AT~other pos~ibilib is ~hat ~he b~kin~ a~d ~ ele nent is retu~ed to the initi~l (closed) position by me~s of the mov~le c~binet / ruL~ u~e ~olnponent itself.

l/U7/~7 ll)~ A~ 76U(~ KlL~'A'l'Kl~K ~'lU~K'l'U I~IUU~l ~n a iirst embodiment the b~ng and danlping cl~r,le.,l is enlbodied as bein~
r~ lly in three parts It ~4r~ ;t~ of a tubul.q$-shaped long stretched-out or ~Yte-nded cylinder made of lnetal or pla~tic, which has a one-sided open bnJe hole. The cylin~er's outer shape can take any form and ~ rt~ to complement the design of ~n adja~ent cabinet I fur,~,Lul~ fit~in~ o~ to iit any desired applir~tio~ yul~os~.
In a ~"ere~ed embod;...e.~ ~e cylinder is ~nollnted on a hinge or is fo~med in o~e piece on a hLnge b~epl~te.

1II order to bc used for ~n in~ nt aE~plic~tion the cyli~der adv~n~a~ously has a serew-on flange that fastens on ~e c~binet I fu~niture or on one of the r~6~ link~
located on one o~its closed sides to the s~ingin~ hnl lin~ de~i~e in a br~
A piston with a lellgthwise sliding fit is pla~ed in the cylinder bore hole. In prin~irle the pisbon is ~dially e~l.a...l~l,le. The~e is in~lu le~ on the pis~on a slide7 which is lo~a~ed fo~
t~e ~nost part outside the ~ylinden The pu~pose ofthis slide is the axial slidin~ ofthe pistoll. The slide t,~r~l~ the dyn~ic ener~y of the bral~ng ca~inet / furn~ture co,.~ el~t to the piston so that the slide (coupled to the piston by an~r means) is able to transfer ~e energy ~on~ the movable oabinet / ru~ ,e co~ P~

rn a ~,lef~ d e~bo~im~nt~ ~e piston is comrletely or paltially enveloped with ane~ncion sleeve, which is made o~fl~ihl~ plas~ rubber compound or ot~er co~ ir~ el~stot~ that have a s~lfficient weffi~ient ~ iction7 so that the sleeve has a continll~ ~lc bore ~ole and i5 placed on the piston or in ~r~y o~er way is r~slcl.ed on or to it. ~or ~is, ~he piston has on its onter 4 ~ etr-~ comb-like rings or ribs~ whi~h enga~e into the colles~ol-A;..~r. ring~haped g~oo~res on the inner w~ll of the ~ n~;on sleeve and so~ on the one han~, the ax~al ~(..kirl~s ofthe e~n~ion sleeve is ~u~, a~tteed and, on ~he o~er hand~ it ~orks by ~U~ lg the retention of ~e ou~r form of ~e flexible pisto~
Any 4uanLi~y of t~ese com~like rings or T-bs is ~ ept~hle ~ ead of ribs, other ~ypes of ca~riers or catches are ~Iso possibilities accord~n~ to the invention .1~07/~7 10:3~ FAX ~10 ~07 7500 KILP~TRICK STOCKTO 1~010 Preferably the expansion sleeve~ which is ~n place, is about one sealin~ wne lon~er th~
the piston. In the sealin~ zone a~ea, the o~er diameter ofthe slfflve is ~ lightly larger in order to ~chieve a s~ r~etory sealing ~t on the inner wall of the cylinder bore hole.
A ~hread-type grooYe is formed a~ound ~e per;,l,et~A of this sealin~ zone. This thread-type g~oove is open on che f~ont side ~nd, af~er ~Ae se~ling zo~e, flows in one or more lo~ in~lly l~el~ed a~r canals~ which are some~at la~r These a~r canals ~re likewise open on the ol)~osiLe ~on~ side t~e inside dia~neter on the f~ont side ofthe exr~ncion sleeve ~ere can be a sealirlg lip, v~hich makes a ~oo~ snu~ seal on the post neck The piston has a slit or slot on ~e ~ont side, ~NhiGh is co....~ d to the ~ der s hollow sp~e, allowing ~ir ~cccss~ A radial eY~an~inn activ~tes the piston by c~ e~ g ~e air co,~ ed in the hollow space.

~he irlvention at han~ w~ll be ex~la~ned more precisely in the following descriptions o~
various e~1ir.lf~ , ~n conj~ ;oIl ~tll the acco...E~rin~ dra~ ,~. H0rcby, a~ditiona!
si~;fi~Prlt ~t.-rc,s~ cL~ e.istics and advant~es of the invention ~vill be ~oncluded from the desi~s and their descrip'aons Thereby ~ho~n:

Figure l; is a side ~tion~l view of the brakin~ and ~mping cl~ l in a ffrst embodiment, Figure 2: is a ~oss section ~ew~hrough the b~kin~ a~d dl~l~-pi~g elemen~ ~o~i~
to Pi~ure 1, Fi~re 3~ cross section tbsou~h another flat-fo~med eml~odi~ of ~e ~r~king and dampin~ el~.m~rlf e 4: is a side sec~on ofthe ~ont por~ion ofthe piston in another emho~lim~t ~ith a carrier fl~nge and coupled exp~nsion slee~e, 1~07~7 10:3~ FA~ al0 ~07 7500 KILPATRICK STOCKTO ~ 011 Fi~ure 5: is a side view ofthe slide ~i~ piston in the embo~liment, ~ocordi~ to Fi$ure 1, Fi~e ~. is a fron~ ~iew of ~e slide v"i~ plston in a~ordaIIce ~th Fi~ure 5;

Fi~ 7 is a sec~io~ througb the eXp~ncion sleeve in accord~ce with Fig~re 1;

Figure ~- is a side view of the o~n~ioll sleeve in acco~ ee w~ ~igure 1 Fi~Lre ~ side secl~ n~l ~epr~cc~ ;on ofthe cylinder, Fi~ure 10; is a side view o~e e~r~n~ion sleeve;

Fi~llre 11. is a side view of ~he slide with a pistonp Fig~e I la is the pis~on in another em~o~im~nt Figu~e l lb is the piston in a mnr~ d em~dimen~ cor..~l~d to ~ re 1 la;

Figure 1~: is ~ side section through an expansion sleeve in a second embodiment ~vith a smoothe~ inside wall;

Fi~ure 13 . i~ a side vie~r of the ~p~ncioll sleeve in ~ccor~Ance ~vith Fi~ure 12, Figu~e 14 is a side se~tion through ~no~er embo~iimeJlt of ~e br~k~n~ and elen~ent with modi~ed piston a~d slide ve~sions, Figure 1~ is the piston in an e~~ r~l in acco~ ce w~h Fig~e 14;

Fi~ure 1~; is the slide ~n an embo~ c ~1 aecordin~to Figure 14;

CA 022206l5 l997-ll-07 1/07/~7 10:40 FA~ al~ ~07 7500 KILPATRICK STOCKTO ~ 012 Fi~ure 17 Is a sec~ion throu~h the braking aIld damping elemetlt in accord~ce with the precedin~ Figu~es with the inserted pull-b~ek spnn~;

Figu~e Ig: is an embo~ent ofthe cylind0r witb deaeration o~en~ng and check valve;

Fi~ 19 is an embodiment ofthe ~;yli~ld~l u~th adju~table ~e~r~t~on devi~e, ~ig~e 20; is an ad~itional e~ nl of ~e cylinder w~th adjustable deaeration device a~d fixing flange;
~igure 21; is a lo~ din~l sectionthrough an embodinlent ofthe b~kin$ and d~ in~ el.~ with a modified a~apl~ion of ~e piston;
~igure 22 is a cross seçtion through the braking and ~In~ g element in accordance w~th Figu~e 21;
~i~ure 23; is a cross se~tion through the b~akin~ and d~n~p~n~ element, aecordi~ to Figu~e 21~ ~vith s~-sh~ped inside notch;
~i~ure 24; is an additional eml-o-limerlt of the piston of t~e br~kin~ and d~nping ele ~
~i~ure 25; i5 a side section through a ~ pin~ elen ~t n~o~nted on a drawe~ in al.oll,e- embo-l;mçllt ~ig~e 26: is ~ section from above by the em~lim~nt in a~ dal~ce ~ith Fig~e 25;
~igu~e 27 is an e~ploded sectio~ o~the rh~l~ .;l~ ofthG cylinde~ in accordance w~th Fi~es 25 and 26;
~igu~e 2g: is a section through Figu~e 27 atong the Line A-A;

CA 022206l5 l997-ll-07 rr~ u~ ~r~lAl~ lU~ lU 1~1~

e ~9; is a side section ~ough another embodin~ent of the ~ mrting elem~nt;

Fi~ure ~0: is a seclion throu~h Fi~e 2~ along the L~rle ~

~igure 31: is an exploded scction fi~om Figure ~9 ofthe deae~ation ¢~1 area The ~Irst embo~lim~nt ofthe ~l~mr;n~ and br~ elemerlt is le~r~C~ d in Pi~res 1 th~ough 11.

Tl~e braking ~d fl~mrin~ element eQr.~ b~ y of a cylinder ~1) which caIl be madeof plastic or me~l ~nd c~n take ~ny shape, a~d which has a cylind~ical or oYal~ one-sided ope~ ~ote hole that fo~ms the cylinde~'s inside spaee.

In ~he cylinder ~1 ) is a piston (3), u~ich caIl be e~pandable ~n a r~di~l direc~on vr e;~LTl l~e ductile, is moved in a len~thwise direction by a slide (2~, so that ~he piston's (3) outer suTf~ce is made ~D su~h a way that it ~the pist~n) fits in the seal~n~ locati~n to ~e cylinde~'s (l ) inside vvall. rr~fe.,~bly, the piston (3~ is enveloped wit~ exp~nsinl~ sleeve (4~ made of el~stom~r matenal, w~ich ine~ses tho sealiny a~tion and the fri~tion~l ~sis~ betweèn ~e piston (3) and th~ cylinder's inside w~11 The pis~on (3) has in its oi~ e~ntial direction comb-like rirl~s o~ ~s ~5~, lwhich en~sage into the cu~e~por~ ,g ~oo~es ~6) ofthe eXp~nciQ~ sleeve (4) so ~at l~e e~cp~n~ion sleeve fts snu~ly on ~he piston and doesn't slip offeven when the piston (3) moves len~thwise.

The e~ncion sleeve (4) has a sealin~ lip (7~ in ~e l~ sitio~ ~ea l~Lwcell the slide (2 and the 12iston (~3.

0~ the piston's ~3) eAte..ded exl~nsion sleeve (4)~ a sec~o~ projects ove~ the pisto~ d fo~ms a se~lin~ zone (8). I'hi5 se~ling zone (8~7 as is made l~own in Pigure 7, is so~newh~t larger in ~i~m~t~r th~n lhe .~ . section of the e~n.~ion slee~e (4), so that a good effe~tive sealing aIId a good fit ofthe cylinder's (l ) inside uall are achieved in this area.

1~07~7 10:40 FA~ ~10 607 7500 KILPATRICK STOCKTO ~ 014 The piston (3) has oll its front side~ for example, a slit-like ~otc~ (10~, which extends over a~out half the l~ngth of the piston ~3). The e~pansion ~;leeve (4~ i5 open on the ~ont side in the ~rea ofth~ sealing zone (8~ and has a bo~e hole (9) so that the result~g formed inside space of ~e ~ ~ nci~1~ pisto~ ~3~ is co..~.ect~l with the hollow space (5~ b~ the slit o~,~ @ (10), which is close~ up by the cylinder (1) a~d the piston ~3).

Fi~ure 3 illus~ates that ~e cyl~nder's (1) form and s~ape~ as well as the t~ al braki~g and d~n-rl;r~ system~ in the Cl05S section do not hav~ to ~e circular7 but can b~ oval or any o~he~ shape Fi~ure 4 shows another ~ossible v~hor! of the piston (~), in which a c~rrier flange ~12) is located on the fiont side ofthe piston in o~der to form a snu$ se~l for the elastic ~ nt and to carry this d~ing the pi~on's (3) movemerlt.

As lepresellLcd in Figwes 1 and 5, the slide (2) preferably has a notch (48) w~ch serves ~s a se~ting in order to ~ nP~t the sli~e (2) (~or example, ~ith a ca~ie~ p~) to the br~ing mQvLngGab~ Go~lponcnL ~n tbe sanne way a sol~plin~ ~ange (~) with ~henotc~ ~48) can be use~ fo~ coupling with the movable cabinet / fi~miture ~on~pol~r.l Fi~ure ~ ilh~ctr~t~c the ~ont view of ~ piston, ac~ording to Figure ~ which ~e slit notch (10) is reeo~ed.

A~ain in Fi$u~es 7 and ~, the par~culars of ~he e~r~n~ion slee~e (A~ are lep~ ltshollld be recognized that ~ ~e area of the sealing zone (~) on the outer per~me~er of the eXp~nci~n sleeve, ~ere are s~ sha~ed aLr ~anals (13~ in the ~m of tbre~dlike f~ont-sided opeT~ ~roov~s. 'rhese air canals ~13) a~e conne~t~tl vvith at le~st one length~vise lr.;~ er air c~n~l (14~ whicb flows in the opposite ~ont side of the ex~ansion sleeve, so ~at an air ~.h ..~P. I~t~. .e.l t~e cylinder ~nte~ior (53) and the surrou~din~ ~ir is possible wit~ ~e insetted expa~sion ~leeve (4~ in the cylinder (1 ) .1~07~7 10:41 FA~ ~10 ~07 7500 KILPATRICK STOCKTO ~ 015 The operations and syste~n, which are described in Fi~ures 1 lhrou~h 1 t are ac, follow I~ Fi~ure 1 the br~lcin~ and d~mring element are in the startin~ or nonnal position. If force, due to a moving cabinet / Çu~ co..~ e"l, is e~certed in direction ~4~ on the end of the slide (2), ~is, to~e~h~ wi~h the piston (3) and the çollpleA e~an~ion sleeve, ~re pressed into the cylmder (1~ In order to be able to feed the slide ~2) and the piston ~3) in ~e starPng pocihon easily into the cylindeI; the cyli~der (l) has a d~Pr~tioIl c;allal (11) which makes the insertion of the piston (3~ up to the st~tin~, initial position possible without forcible action.

By using force (52), the piston (~) ~th the e~ n~ioll sleeve ~ is now pushed ~ther int~
~e cylinder (1) so ~ the ~nl~ ir ir~ the cylinder's hollow sp~ce (53~ becomes more aIld more co...~ e~ T~is co~..~essed air7 by means of ~e bore hole ~9) oftbe ~n~ioD sleeve and the slit notch (lO) of th~ piston, activates the iDside walls of ~e e~p~ndable piston (3).

~s the c~pl~ion increases w~th the cffeots ofthe i~orce (~23, the compressed ~ ses radi~ ul~..a.ldly di~ected e~er~y on the piston (3) so that it e~ands and the cxp~nsi~n sleeve (~) p~esses on the cylind~r7s (l) ~nside walls ~ addition to the ai~ com~lession, which produces a ~np~ action, the ~ictional force b~t~n the exp~n~ion sleeve (4~and the cylilldcl wall ca~ses flddit~oll~l hr~ ~ a~tion that is ~djustable ~y selecting the friction coefficient on ~e eyll~nsil~n sleeve (~. Consequently, this resul~s in a ~rog~essively i~ g bral~ng and d~ ing sys~em.

As has ~l~ady been descnbed,tbe e~r~n~ion sleeYe (4) h~s air c~nals (13 aIId 14) on its outer ER~ r. llhe crossseç~on (ofthese air~an~s)issi7ed so that d ~ n~the course of the air con~pr~s~ion, which results in the brakin~ and tl~mr;ng pro~ess, the co~ essecl air inthe ~y~derhollow space can escape ou~ in a con~olled manner SQ t~at the b~akn~g ~nd d~E~u~ effects do notexceed a ~ert~in amount until ~e piston (3~ reaches it fi~al position (~1). A~cer the e~d pncition (51~ ed tbe ~yl~nder hollow 5pace ~$3) and the hollow sp~ce ofthe piston (3) have almost no presSU~e7 so that the bra~ing and dampin~ elenlent rern~nsi~this position.
_g_ CA 022206l5 l997-ll-07 1~07/~7 10:41 FAX ~10 ~07 7500 KILPATRICK STOCKTO ~ 01~

The piston, when the energy action (5~) has been completed, is moved back to th~ initial star~in~ position by a pull-ba~k sprin~ (27) (ref~r ~o ~i~e 17) or a similar pull-b~c~
~le ,.~t or device. It is likewise possible that the piston is brought back to its initi~l sta~ng position by the n~ova~le cab~net I f~niture ~or~ ents Pi~ures 9 and 11 show again the individllal cul~pollprlL~li of the bralcin~ a~d d~mping element in a~ordance to ~igures 1 Ihru~ll 8 Tn a modi~ed embodiment, accor~ to Figure 11~, a pistoIl is provided ~N~ a smooth ollter ~ ere~ce, which h~s its slit opening (10) ~onnPrt~d ~v~ cross bo~e hole (1~).
The OO~ ~SSGd air reaches in these cross bor~ holes ( l 5) and, thereby, ~orks directly on ~e ~r~ C;on sleeve (4), wh~ch then e~nrl~ This embodil"e..l of the plston h~s the ad~an~ge th~t ~he piston must not ~e ductile o~ e~ kle, ~ut inste~d, can be lIIade rela~ ely rigidly.

Figure I l b shows a IJlo~lified em~i~ L of the piston ~3~ in acco~ e 1 la, in ~vhich a cont~ol device is p~ovided wllich ean cont~ol the bral~ng action of ~he pis;~on (3~ The con~ol dev~ce basical1y consists of an additional smaller movable piston (16), which is located throu~h the not~h (10~ iII tbe ~rmed hollo~ s~a~e. By mea~s vf these movable pistons one or more cross bore holes (t5) can be pu~posely cov~red so that the fiot~ of the e~p~n~ n s1eove and, thus, the br~in~ a~lion can be Gontrolled The piston's (16) movement results ~on~ a piston ~od (17), whicb is f~Pned to an adjusti~g screw (18).
By turnin~ ~he adjus~n~ scre~r, it is p~ ible to move the piston (1~) in an axial di~e~:~on ~44).

Fi~ures 12 and 13 show a:tl exp~n~ n sleeve (19) which fil:s the embo~imen~ of ~he pisto ~3) acco~il~ to Figu~es 11, lla and 1 lb. The expansion sleeve (1g) does not haYe groo~es on the Lnside ~met~ but instead lies fl~t on the piston ~3). The seal~n~r wne (20~ of the expansion sleeve ~l 9) is folme~ in such a vvay lhat the fi~ont cdge laps over the front side of ~e piston (3), so ~at ~e e~ n~ior~ sleeve (19) ~ies snu~ly aIId fixed on the piston (3). As has already ~een descnbed, air canals (13, 14) h~e likewise been provided on ~e outer peI~meter of the expa~sion sleeve (l9).

; 4~ r~ LrAlnl~

Figu~es 14 to 16 show another embodiment ofthe b~ ng and ~mpi~g ele~nerlt. Aga~n7 the cylinder (1) i5 made known in which ~ "Diabolos-formed" ~iabolos is ~e name of a ~3rne.) piston (24) ~ith ~ sealing zone (S4) is gu~ded moving in a len~thwise di~c~on ur~th a slide ~2~. The slide (2~) h~s a col~linf~ link (2~) on its ~ont end~ which ~n~s a colr~spu...l;~ otch (26~ ofthe piston so that the slide (2~ and the piston (24~ c~n be cu....~ t~d firmly ~th ea~h other The piston element (24) l~s an ind~nt~tion (25~ on ~ts fro~t side so that ~e piston element is r~dially ~Yt~nd~d ~y slidm~ c~ sin~ the press~e inside the cylinder ~l ) to its outer ~anks irl the area of ~e sealing zone (~4) and elr~ti~.g the des~r~ bral~ing ~tion. A
se~ale sealing sleeve is not lr~e~d~A lnct~d, th~ piston (24~ is ma~e of a suitable elasto~ner maten~l e 17 ~sn~rally shows the b~ng and d~ml-in~ elemellt with cylinder ~l~ slide ~2) acld pis~on (3~ A piston (3~, by ~eans of the pull-back spnn~ ~27~ ys returns to its sta~g po~iti~n after the loa~ is alle ~ ed offthe slide.

In order to prevent a vacu~n ~m occunin~ in the hollow sp~ $3~ of the ~ylinder when the pis~on retums, ~ 18 illustra~es; for exa nple, a check ~ re (~g) with ~ o~
bo~e holes (45) loçated on the cylinder's ~ont si~le. As long as the pis~on ~3~ is pressed into the ~y~ der (1)~ the b~al~n and ~n~ ekr..c-.l ope~ate in tihe nlanner ~esc~bed above When ~ , is no lon~er exerted on the slide, the pull-back sp~s (27) n~ to slide the piston (3) b~çk to its original po~itiQn E~ use a vacuuIn ~o~ns inside the cylinder (1 ) ~en the piston (3~ slides back, the ~heck ~talve (~8) opens so ~at the air can penetr~te the cylinder holIo~v space (53) by means of the deaeration bore holes (4~) ~nd the pisl:on (3) can retum to its ~n~al po~ibo~ without ~aow~le~ an oppo~ing ~orce.

Fi~ures ~9 and ~0 show ~ modif;ed enlho~1im~nt of ~he cylinder's deaera~ioh hy ~e simrlified ~et~n ofthe piston (3) to its initi~l posibon ~ ~e ~ont are~ o~the cylinder (1) 1~07~7 10:42 FA~ ~10 ~07 7500 KILPATRICK STOCKTO ~ 018 ~ valve extensio~ (~g) is added oll, ~hich h~s ~ central bore hole (33) whi~h tap~rs on ~he end to a coned poi~t (34~ ~nd laps i~ ~ ~ore hole (32)~ whiçh ends in ~he hollow space (53) ofthe c~linder (1). A knu~led screw (30) is twisted into bore holG ~33). Its ~l~urle~
screw~ point is fitted ~o the cone ~34) ofth~ ~ore hol~ (33~. Ano~her bore hole (31) ~nakes the exchange of air possible between the inside space (53) of the cylinder (1 ) and the s~rounding air. I~e~ di~ on how far in ~e knllrled screw (30) is screwed in~ the free cross section jn the ~ to.y area of ~e bore holes (31~ 32) ch~nge~ Thus, the ilow of air can be controlle~ Figure 1~ in~ PteS thEIt, addi~ionally, a check valve (28) can be provided i~ order to e~?el air ~ressul~ in the cylinde~ (1) du~ ~e operation of the br~king and ~l~ml-in~ elemen~

In yet ano~her ernbodimeTlt in acco~dance with Fi~ures 21 throu$h 23, the br~ing and d~r..yh~ el~ t is only m~e of two parts and~ again, con~i~te of ~e Gylinder (1) ~nd a ~adial out~ardly exp~nA~Ie piston ~6~, which has ~n elo~te~l slot (37). The conlp~ ion action is fi~rther des~ed above. When tl~e eYran~ion piston ~6) is pushed in~ the air is ~ompressed which p~shes the e~p~n~ioll piston radially and out~N~dly so that the desir~d brakin~ action takes pl~e.

In Figu~e 22 it is evi~ent ~at the br~ ,g and damping çl~nent in the cross section can be o~tal-shaped ~nd the elon~ slot (37) can be sealed (for e~le, wi~ a seal ~46~) so that air will not be los~ d~ing the çon~ si,ion of ~e cyl~nd~'s air volume.

~n a~c~r.l~cc ~ Figure 23, ~e cylinder (1), as ~well as ~he e~ran~ion ~isto~ ~36~, in ~e c~oss section, c~n also be circul~r-shaped. ln this example~ ~e expansion piston (36) has a st~ bore hole (3g).
The sta~-~pe bore hole (38) increases tbe ef~èctive surface ofthe ~ore hole in that the radi~ force ~v~l~r on the inner side of the ex~nsion element (36) is conseauen~ly in~reased e ~4 shows a~o~er en bo lin~rlt of a piston (40)7 which is aga~n ~onnect~ to a slide ~) The pis~on (40) has ~ c~ntral bore hole (47~ whlch is ~ided ove~ ~e en~ire length of l~U7~577 lU:4~) ~A~ 5J1U t~UI 16UU r~lL~AlKl(~lS ~ilUl,hlU I~IJl~

the piston (40). In the fiont area on the outer perimete~ of the pisto~ there i6 all O-rin~, w~ich ~ts sealed on the inner side of the cylinder Arl exp3nsion slee~e (42) lies on the o~ter pe~meter ofthe middle piston coTnponent (40), which stretçhes rasli~lly an~
out~y. The bore hole (47~ ~onfinlles iT~ ially ~1ire~te~l slot not~h (43), w~ich is guided from inside the pisto~ (40) to the expansion elP~nent (42~ When ~he piston (40~ is fed ~to the ~;ylil~der (1), the pressu~e ofthe ~ol-~pr,~r7ion c~n~nl.le~ ~rough the bo~e hole (47) and the slot notches (43)7 and a~ts direçtly on the expansion sleeve (~2), which ~LI.,t~,he~ o~t radially as a result~ and is pressed on the inside w~ll of the cylinder ~1). In ~ddition to the dampin~ action, ~e co~ ession also achieves a bral~g ~ction.

Figures 25 ~rough 2g show another em~odiment of a ~l~r..~,;[~ element Tnounted o~
dravrer An outer cyl~nder (55), whiçh is fastened on a drav~er ~ont (6S), has an inrler cylinder ~56) which is held floatin~ by n~e~n~ of an en~ing ~ in~ c1ip (5~) located in a ~roove (57~ o~ the front side ofthe L~ner cylirlder (56~. The float~ng retention ofthe in~er .;~ ,del ~5~) b~l~nc~c out the d~awer pl~ laterally to l~e pu11~ut ~irection.
The piston (59~7 which is guided into the inner cylinde~ (~6), and p~eferably, i~ ~4~med conical alld caIl~ed on the front part so ~t when the ~rawer is plllled oul completely ~nd the pisto~ is p~lled co,~plctely out of the iDDer cylinder (56~, it is eas,ier ~nd simpler to push the drawer ~ack in and ~e piston back in the inner cylinde~. ~hese a~tions be~ome more effortless and smoother if the ~ont ~ide o~the piStoD is shaped like a cone.

The p~ston (~9) is CO~ ~ on the ba~k side witb a slide (63~, whioh is located on ~
cabinet / ru.,lilule (64). In ~Mition~ the piston (59) has a ~ore hole (60) ~n ~he back side, wh~ch goes into the piston hollow s~ nd is connect~A to the ~l~Paer~oT~ bore holes ~61)7 w~ioh en~ e in the front sicle ofthe piston.

The inne;~ cylinder (~6) h~s a slot~ e notch (62), ~hich comes t~ lie over tihe deaeration ~ore holes (6t~ so that in the a~e~ or in the position o~the piston where ~l~fflring act~on is not desired, the air in the ~ollow space be~een the inner ~liL.der and the pist~ c~
quickly escape and the dar ~ g element of the ~rawer movement does not encounter a ny tRnce.

1/07~7 10: 43 FAX alo ~07 7500 KILPATRICK STOCKT0 ~1020 The ~et~inin~ clip (S~, located between the inner cylinder ~56~ and che ollter cylinder (55~, is somewhat U-sh~ped a~d lies in the ~roove ~57) ofthe inner cylinder ~6), ~nd ~up~o-L~
the shank on the oute~ cyLinder (55).

es ~ th~ h 31 show an e~ nt ofthe d~ element wish a ¢yl~nder 16~), which has in it a piston (67). The piston ~6~) is su~TouDded by a finçtion element (68)~, wh~h acts partiall~ as a type of expa~sion sleeve. The piston ~67) operates by means oP a slide (74).

The friction elemetlS (68) s~ o~ds ~e piston ~67) aIld at the sa~e time fonns ~ se~
ed~e (72~ on the ~ront and back side o~the piston, so that a somewhat V~haped ~roove ~6~) is for~ned 1~ v~ he seal~g e~es (72~.
Belo~r the ~oove ~) i5 a~l air caTlal (70)~ which is con~e~ted to the hollow space ~75 fo~med by the cylinder ~nd piston.
Puslling ~e piston (67) in the ~ylillde~ ~66) cv~ sses the air in th~ hollow spa~e (75).
I~e ai~ ~eaches tbe air canal ~70) where tbe ~r~ssul~ that is b~ldiIlg up causes the ~7-shaped section ofthe ~ ~on elemen~ (~8) to be pressed ollL~.~rdly on the inner wall of the cylinder (6~) an~ increases the frictio~al fo~ce ?~ehveen the pisto~ ~nd cylinde~.
r)ue to the ~ prfltlon ~Anal ~71~ ~he co~ essed air in the hollow spa~e ~75~ c~n e~cape slowly so ~at as ~e pr~s~ in ~e l-ollow space (7~ dev~s and ~ Lns under a certain ~alue, the ~ic'aon cle...P.~.I (6~) auto~ cally flaps ba~k to its initial position and~
o~ce ~ follns the V-shaped ~oove The advantage ofthis embo~ ..c~.l is that w;lholl~the buildup of pres;,ul~ in the hollow space ~75~ the ~otion is very small ~etween the cylinder (~ nd the piston ~67), and only in the last moTnent ofthe cylinder's inse~on7 vvhen a col~sl,o~ g p~essu~ is built up in ~e hollow space (75), the ~riction olem~nt (68) in th~ groove (~9) are~ psollt~rardly due to the ai~ prcs~ and brakes dlle to the ~d~litinn~l s~on~ frichon of the ~mr~in~ element.
In place of the piston, from ~li~h no damping oecurs, the qu~ck dea~r~tion of the hollour space (75~ is gu~llteed by the slot-shaped not~h (73) in the cylinder wall.

Claims

1. Braking and damping element for movable cabinet/furniture component is characterized by a cylinder element (1) containing a lengthwise moving piston (3) with a notch (10,37,48) on the front side, which is connected by the cylinder (1) and the piston (3) to the resulting air-filled hollow space (53); whereby, the air contained in the hollow space (53) is compressed resulting in a radial spreading of the piston (3) and/or one of the corresponding elements (4; 19; 42; 68) of the piston (3).

2. Braking and damping element, according to Claim 1, is characterized by the cylinder element (1), which has a one-sided open, long and cylindrical or oval-shaped bore hole.

3. Braking and damping element, according to Claim 1 or 2, is characterized by the notch (10, 37, 48) of the piston (3), which is shaped like a lengthwise slot.

4. Braking and damping element, according to Claims 1 through 3, is characterized by the piston (3), which is connected with a slide (2) by which the piston (3) is able to move in a lengthwise direction.

5. Braking and damping element, according to one of the Claims 1 through 4, is characterized by the slide (2), which has on the long side a one-sided notch (48) with a coupling flange (49), used for coupling with a cabinet/furniture component.

6. Braking and damping element, according to one of the Claims 1 through 5, is characterized by one or more surrounding rings or ribs (5) formed one the outer perimeter of the piston (3).

7. Braking and damping element, according to one of the Claims 1 through 6, is characterized by the piston (3), which is surrounded totally or partially by an elastic or flexible expansion sleeve (4).

8. Braking and damping element, according to one of the Claims 1 through 7, is characterized by the front side of the piston (3), which has a flange (12) surrounding it.

9. Braking and damping element, according to one of the Claims 1 through 8, is characterized by the expansion sleeve (4), which has a tubular shape and has grooves (6) on the inside wall that engage the corresponding ribs (5) of the piston (3).

10. Braking and damping element, according to one of the Claims 1 through 9, is characterized by the expansion sleeve (4), which projects a bit over the piston (3) and the diameter of the projecting parts, which is slightly flared so that a sealing zone (8) is formed in the sealing area of the cylinder element's (1) inside wall.

11. Braking and damping element, according to one of the Claims 1 through 10, ischaracterized by at least one screw-shaped air canal (13), which is provided in the sealing zone (8) area on the outer perimeter of the expansion sleeve (4) and that at least one (screw-shaped air canal) goes over in a lengthwise direction of the air canal (14) to the larger cross section.

12. Braking and damping element, according to one of the Claims 1 through 11, ischaracterized by the piston (3) that is made relatively rigid with its lengthwise running notch (10) which has one or more cross holes (15) coming off it until they extend to the peripheral surface of the piston (3) so that the compressed air acts directly on the expansion sleeve (19), which then expands or stretches radially.

13. Braking and damping element, according to one of the Claims 1 through 12, ischaracterized by the piston's (3) notch (10) which has another movable piston (16) located in it; whereby, the movement over an adjusting screw (18) results by which a piston rod (17) acts on the piston (16).

14. Braking and damping element, according to one of the Claims 1 through 13, ischaracterized by the piston (24), which is shaped somewhat like a "Diabolos" (Diabolos is a game) and forms a sealing zone (54) on the corresponding front side of the hollow space (53); whereby, the front side has an indentation (25).

15. Braking and damping element, according to one of the Claims 1 through 14, ischaracterized by a pull-back spring (27), which is located in the hollow space (53).

16. Braking and damping element, according to one of the Claims 1 through 15, ischaracterized by a check valve (28) with deaeration bore hole (47), which is located in the cylinder (1) wall.

17. Braking and damping element, according to one of the Claims 1 through 16, ischaracterized by the cylinder wall that has a valve extension (29) with a central bore hole (33) in which a knurled screw (30) and an air pathway are located, formed by bore holes (31,32) whose open area in the valve changes according to the position of the knurled screw (30).

18. Braking and damping element, according to one of the Claims 1 through 17, ischaracterized by the cylinder element that has a fixing flange (35,50).

19. Braking and damping element, according to one of the Claims 1 through 18, ischaracterized by one or more slot notches (43) running out from the notches (10,47) which run in the piston's (40) lengthwise direction, and these (slot notches) reach up to the piston's (40) peripheral surface so that the compressed air acts directly on the expansion sleeve (42) and causes it to stretch radially.

20. Braking and damping element, according to one of the Claims 1 through 19, ischaracterized by the cylinder that consists of an outer cylinder (55) and an inner cylinder (56) which floats in the outer cylinder.

21. Braking and damping element, according to Claim 19, is characterized by the floating position resulting from a retaining clip, which is fastened in a groove (57) of the inner cylinder (56), and which is supported on the inner wall of the outer cylinder (55).

22. Braking and damping element, according to one of the Claims 1 through 21, ischaracterized by the piston (67) which is surrounded by a friction element (68) which forms a V-shaped groove (69) in the inner wall area of the cylinder (66); whereby, the friction element (68) is formed with the corresponding pressure in the groove (69) area and fits along the cylinder's (66) inner wall.

1. cylinder 31. bore hole 2. slide 32. bore hole 3. piston 33. bore bole 4. expansion sleeve 34 coned point 5. ribs 35. fixing flange 6. grooves 36. expansion piston 7. sealing lips 37. elongated slot 8. sealing zone 38. star bore hole 9. bore hole 39. slide 10. notch 40. piston 11. deaeration canal 41. O-ring 12. driving flange 42. expansion sleeve 13. air canal 43 slot notch 14. air canal 44. direction 15. cross bore hole 45. deaeration canal 16. piston 46. seal 17. piston rod 47. bore hole 18. adjusting screw 48. notch 19. expansion sleeve 49. coupling flange 20. sealing zone 50. fixing links 21. sealing lips 51. end position 22. slide 52. force

23. coupling link 53. hollow space

24. piston 54. sealing zone

25. identation 55. outer cylinder

26. notch 56. inner cylinder

27. pull-back spring 57. groove

28. check valve 58. retaining clip

29. valve extension 59. piston

30. knurled screw 60. bore hole 61. deaeration bore hole 62. deaeration bore hole 63. slot notch 64. cabinet / furniture 65. drawer front 66. cylinder 67. piston 68. friction element 69. groove 70. air canal 7l. deaeration bore hole 72. sealing edge 73. slot notch 74. slide 75. hollow space