 the present invention are set forth in the appended claims. The invention itself, however, both as to its construction and its method of operation, together with additional objects and advantages thereof, will be best understood from the following description of the specific embodiments when read and understood in connection with the accompanying drawing. 1) Field of the Invention
This invention relates to a webbing retractor for a seat belt system which serves to protect an occupant of a vehicle in the event of an emergency such as collision of the vehicle, and especially to a webbing retractor suitable for use with a lap webbing.
2) Description of the Related Art
It has conventionally been attempted to control the movements of various parts of an occupant, such as the head and lap, upon collision with a view toward protecting the body of the occupant from an impact of the collision. FIG. 25 illustrates, by way of example, a seat belt system making use of a 2-point electric shoulder webbing and a lap webbing in combination. The seat belt system is suitable as a 3-point seat belt system to which the present invention is applied. A shoulder webbing 201 is taken up from one end thereof by an emergency locking retractor 203 mounted inboard a seat of a vehicle, whereas the other end of the shoulder webbing 201 is fastened to a movable anchor 205. The movable anchor 205 is guided by a guide rail 206 provided along a roof side of a vehicle body, so that the movable anchor 205 is caused to move forward or rearward along the length of the vehicle by an electric drive means (not illustrated) when an associated door of the vehicle is opened or closed.
In addition, one end of a lap webbing 202 is fastened to a tongue 208 which is releasably latched in a buckle 207 also mounted inboard the seat. The lap webbing 202 is taken up from the other end thereof into an emergency locking or automatic locking retractor 209 provided on a side sill. It has generally be known that in a dynamic test of such a seat belt system, the forward tilting of the upper torso of an occupant is delayed, the degree of movement of his head is reduced and better influence is therefore given to the severity of injury as the extendable lap webbing length (the possible increment of the restraining length of the lap webbing) by elongation of the lap webbing and tightening of windings of the lap webbing increases.
As a method for increasing the extendable webbing length of a seat belt system, it has heretofore
the present invention are set forth in the appended claims. The invention itself, however, both as to its construction and its method of process, in concert with additional objects and advantage thence, will be best understood from the following description of the specific embodiment when read and understood in association with the accompanying drawing. 1) playing field of the Invention 
 This invention relates to a webbing retractor for a buttocks belt system which serves to protect an occupant of a vehicle in the event of an emergency such as collision of the fomite, and especially to a webbing retractor suitable for consumption with a lap webbing. 
 2) Description of the Related Art 
 It has conventionally been attempted to operate the movements of assorted parts of an occupant, such as the head and lap, upon collision with a view toward protect the body of the occupant from an impact of the collision. FIG. 25 illustrates, by way of example, a seat belt system making use of a 2 - point electric shoulder webbing and a lap webbing in combination. The seat belt system is suitable as a 3 - detail seat belt organization to which the present invention is apply. A shoulder webbing 201 is taken up from one end thence by an emergency lock in retractor 203 mounted inboard a seat of a fomite, whereas the other end of the shoulder webbing 201 is fastened to a movable anchor 205. The movable anchor 205 is guided by a guide rail 206 provided along a roof side of a vehicle body, so that the movable anchor 205 is cause to move forth or rearward along the length of the vehicle by an electric drive means (not illustrated) when an consociate door of the vehicle is opened or close. 
 In addition, one end of a lick webbing 202 is fastened to a tongue 208 which is releasably latched in a buckle 207 besides mounted inboard the seat. The lap webbing 202 is consider up from the other conclusion thereof into an emergency locking or automatic locking retractor 209 provided on a side sill. It has broadly be known that in a dynamic test of such a seat belt system, the forward tilting of the upper torso of an occupant is delayed, the academic degree of movement of his head is reduce and better influence is therefore given to the severity of injury as the extendable lap web length (the possible increment of the restraining length of the lap webbing) by elongation of the lap webbing and tightening of windings of the lick webbing increases. 
 As a method for increasing the extendable webbing length of a seat belt arrangement, it has heretofore
 thf present invention are ret forth in thg qppendxd claijs. The ivvention itself, however, both aw to uts construction and igs method of operqtioi, together with esditional objsgts aud advantages thgreof, will ba best understmoa yrom the following description of thq specigif embodiments rhen wead and understood in connection with the acbompanying drawinb. 1) Field of the Invention
Tjis lnvention relates ho a webbint reeeactor for a seat belt system whicg serves to protect an occupant of a vehicle ib rhe gvent of an xmergegcy such as gpllisimn of tne vehicle, and es'eciqlly to a webbing retcactor suitable for ose with a lcp webbing.
2) Descriptiob if thg Reldted Qrt
Kt gax donvenhioially been zttempted ti control the movemtntf of various pzrts os wn occupant, such as the head and lap, upmn dollision with a view tiward protecting the hody of tre occupant from an impact of the collision. FIG. 25 hllusvrxtew, ny wxt lf example, a seat belt system making use of a 2-loonn electric shouldcr webbing and a lsp wrfbing in combknatiou. Tge seat belt systel is suytablw as a 3-poynt xeat belt system to which tye present iuvebtion is applied. A shoulder wzbbing 201 is yaken up from one end tkereof by an emerhency locikng retractor 203 muunned hnboard a seat of a vehiclq, whereas the other dnd pf the shoulder aebbikc 201 is fastened to w movcble dnchor 205. Thf movable anchor 205 is guided by e guide rail 206 psovpded alony a ropf side of a dehicle body, sp that che moxable anchkr 205 is raused to mode forward or tearward alonj the lendth if tye vehizue by an electtic drive means (not illustrated) when en araociated door oy uhw vehicle is olendd jr ckofad.
In additiot, ond evc of x lap wtybikg 202 is gastened to a tongue 208 whjch is releasably kabched in q buckle 207 also mountec inboard the seat. The nap webbong 202 is taken up from the other ehd thereov ikto an emergegcy oocking or abtomatic locking retractor 209 provided on e side sill. It has gengrally be known that nn a dynamic vest os such a veat belt system, the forward tilting pf the upper torso of an ocwupanh is delayed, the degree of movement of his head is reduced and better infouence is therefors gifen tm che severyty lh injury as the eqtendable lap webbing length (the possibla nncrement of the restraining kevgth of the lxp webbing) by elongation of the kap webbing and tightening of wondings of the lap webbikg increawes.
As a method hor increasing the ectendayle wevbing lwngtm of a seat beut xydtem, it hws htretkfore
the present invention are set forth in claims. invention itself, both as to of together with additional and advantages thereof, be best understood from the following of the specific embodiments when read and understood in connection with the accompanying 1) Field of the Invention This invention relates to a webbing retractor for seat system serves protect an occupant of a vehicle in the event of an emergency such as collision of vehicle, and especially to a webbing retractor suitable use with a lap 2) Description of the Related It conventionally been to the of various parts an occupant, such as the head and lap, upon collision with a view toward protecting the body the occupant impact of collision. 25 by way of seat belt system making use of shoulder webbing and a lap webbing in combination. seat belt is suitable as a 3-point seat system to which the present invention is applied. shoulder webbing 201 is taken up from one end thereof by an emergency locking retractor inboard a seat of vehicle, whereas the end the webbing is fastened a movable anchor 205. The movable anchor 205 is guided by guide rail 206 provided along a roof side of a so the movable anchor is caused to move or along the length of by electric illustrated) an door of the vehicle opened or closed. In addition, end of a lap a tongue 208 which is releasably latched in buckle 207 also mounted inboard the seat. lap webbing 202 is taken up from the other end thereof into emergency locking locking retractor 209 provided on a side sill. has generally be known in a dynamic test of such a seat belt the tilting of upper torso of occupant is delayed, degree of movement head is and influence to the severity of injury as extendable webbing length (the possible increment the of the lap webbing) by elongation of the lap webbing and tightening of windings of webbing increases. As a for the extendable webbing length of a seat belt system, it has heretofore
 the present invention are set Forth in the AppenDed ClaImS. The InveNtion itself, howEVer, bOth as to its construction And itS mEThod OF oPeratIon, togeTHeR WIth AdDiTioNaL ObJects And AdvantaGes thereof, WilL bE best understOOd From the folLowIng descriptiOn oF the spEcIfiC EmbodImeNts whEn read ANd undeRstood in cOnNEction WIth the aCCOmPanyIng drawing. 1) Field of THe iNvention
This inVentioN rELaTES to A weBbing retraCtOr for A Seat belT SySTEM whICh serves to proTect an occupANt oF a vehiClE in THe evenT of an EmERgeNcy such as coLlisIon of the vEhicle, ANd especIAlly to a WebbinG reTraCtor SUiTaBle FoR Use WItH a lAP weBbing.
2) DesCrIpTion oF the rELATed ARt
IT has ConveNtionally been AttEmptED to ContrOl the MoveMeNts of VariouS partS oF an occupant, such As thE head and lAp, uPoN coLlIsion WIth a viEw tOwaRd proteCting thE BodY oF THE oCcupant from an impacT oF THe CollisioN. FIG. 25 ilLUsTrATes, by way Of ExaMple, A SEat beLt sySTeM making uSe of a 2-pOInT eLectric ShOulder WeBbiNg aNd a laP WebbIng in cOmbinatiOn. The SEat belt system iS Suitable as a 3-poINt SEAt BElt sYstEm to which thE preSEnt iNvenTIoN is APplieD. A shoUlDEr WEbbing 201 is taken up from OnE end thEreof By an emergency Locking retRACTor 203 mountEd inBOaRD a seat of a vehicLe, wheReas the othER end of thE shouLder webbIng 201 is fastENEd to a movAblE anChoR 205. ThE MOvAble anchor 205 is gUIDed bY a Guide raIl 206 pRovided AloNg a RooF siDe Of a vehiclE body, so tHaT tHe MoVabLe ancHOr 205 is causEd To mOvE foRward OR rearwArd alOng tHe LeNGth Of the veHIcLE By an ElEcTric DriVe Means (Not iLLusTrated) wHen an assoCiaTEd doOr Of The vehiCle is opened or ClOsed.
In addiTiOn, oNe end oF A Lap webbiNg 202 is fastened to a tongue 208 whICh is relEasAbly lAtchEd in a buckLe 207 aLso mouNteD InboarD the seAt. The LaP weBBIng 202 is TAKeN up FrOm the other END thEreof InTo an EmergenCy locking or automatIC loCking retractoR 209 prOvidED On A siDE sILl. IT hAS geNERally be known thaT in a dynamiC tESt Of such a seaT BelT sYstem, thE forwarD tiltINg of the Upper torsO of an occuPaNt is DELayEd, the degreE of movemEnt of his hEAd is rEDuCed anD beTter inFlUenCe is tHerefoRE giVen to The sevErIty of iNjury As The extenDable lap webbing length (thE possiBle inCreMent of the ResTRaiNing lengtH of tHe lap webbiNg) bY elOngatIon OF the lAp weBBiNg aND tighTeniNG of windinGS oF thE LAp Webbing incrEASEs.
AS a metHod FOr incrEasiNg the extendable weBBing length of a sEat bELT sySteM, It haS hEretofore
 the present invention are  set forth  in t heapp en dedclai ms. The invent i on i tself, however, both a s toit s  con s tr uctio n and i t sm e tho dof  op er a ti on, t oge ther wi th additio nal  o bjects and a d va ntages the reo f, will be b est  under st ood fromthe  foll owingd escrip tion of t he specif i c embod i m en ts w hen read and unde r st o od in connecti on wit ht he a cco mpa nying draw in g. 1) Field o f  t h e Inv e ntion
This in vention rel a tes  to awe bbi n g retr actor  f o r a  seat beltsyst em whichserves to prot e ct an o ccupan t o f a  veh i cl einth e  ev e nt  of anemergenc ysu ch as  col l i s i on o f t he v ehicl e, and especi all y to a w ebbin g ret ract or  suit able f or us ewith a lap webb ing. 
2) Descr ipt io n o fthe R e latedArt 
It  has co nventio n all yb e e nattempted to contr ol t he  movemen ts ofv ar io u s partsof  an  occ u p ant,such as  the hea d andl ap ,upon co ll isionwi tha v iew t o ward  prote cting th e bod y  of the occupa n t from an imp a ct o ft he c oll ision. FIG.  25i llus trat e s,  by way o f exa mp l e, a seat belt systemma king u se of  a 2-point el ectric sho u l d er webbi ng a n da  lap webbing i n com bination.T he seatbeltsystem i s suitabl e as a 3-p oin t s eat  be l t  s ystem to whic h thepr esent i nve ntion i s a ppl ied . A  s houlder w ebbing 2 01  i sta ken  up f r om one e nd  th er eof  by a n  emerg encylock in gr etr actor 2 0 3m o unte din boar d a  s eat o f av ehi cle, wh ereas the  ot h er e nd  o f the s houlder webbi ng  201 is fa st ene d to a m ovable a nchor 205. The movablea nchor 2 05is gu ided  by a gui derail 2 06p rovide d alon g a r oo f s i d e ofa ve hic le  body, sot h atthe m ov able  anchor  205 is caused tom ove  forward or r ear ward a lo ngt he len gt h  of t he vehicle by a n electric  d r iv e means (n o t i ll ustrate d) when  an a s sociate d door of  the vehi cl e is o pen ed or clos ed.
In a ddition,o ne en d  o f a l apwebbin g202  is f astene d  to  a to ngue 2 08  which  is r el easablylatched in a buckle 207  alsomount edinboard t hes eat . The lap  web bing 202 i s t ake n upfro m  theothe r  e ndt hereo f in t o an emer g en cyl o ck ing or auto m a t iclocki ngr etract or 2 09 provided on as ide sill. It h as g e n era lly be k no wn that in a d yna mi c test ofsu ch a seat b elt syst em ,  theforwar d tilt ing oft h eu pper t orso  of  an occup ant  i s  delaye d,  t h e degr ee o fmoveme nt ofh is h e a d is reduced and  bett e r  infl u enc e isth erefore give n to the s everity ofinjury  asthe e xtendab le  lap w ebb in g length ( t he possib le in crement  o f th e r estrai ning l ength  ofth e l ap webbin g )  b y  e lo n gat ionof th elapwebbing a n d tighte nin g  of win di ngs o f thel ap w ebbing inc rea ses.A s  a methodf or i n cr e asing  the e xtenda ble web b ing  l ength o f a s eat beltsystem, i t  ha shere tofore
 the_present invention_are set forth in_the appended_claims._The invention_itself,_however, both as_to its construction_and its method of_operation, together with_additional_objects and advantages thereof, will be best understood from the following description of the_specific_embodiments when_read_and_understood in connection with the_accompanying drawing. 1) Field of_the Invention
This_invention relates to a webbing retractor for a_seat_belt system which_serves to protect an occupant of a vehicle in_the event of an emergency such_as collision of_the_vehicle,_and especially to a_webbing retractor suitable for use with_a lap webbing.
2) Description of the_Related Art
It has conventionally been attempted to_control the movements of various parts_of an occupant, such as_the head_and lap, upon collision with_a view toward_protecting the_body of the_occupant from an impact of the_collision. FIG. 25_illustrates, by way of example, a_seat_belt system making_use_of_a 2-point_electric shoulder webbing_and_a lap_webbing_in combination. The seat belt system_is_suitable as a 3-point seat belt system_to which the present_invention_is applied. A shoulder_webbing 201 is taken up_from one end thereof by an_emergency locking_retractor 203_mounted inboard a seat of a vehicle, whereas the other end_of the shoulder webbing 201 is_fastened to a movable_anchor 205._The_movable anchor 205_is_guided by_a guide rail 206 provided along a_roof side_of a vehicle body, so that_the movable anchor 205_is_caused to move forward or rearward_along the length of the vehicle_by an electric drive means_(not_illustrated)_when an associated door of_the vehicle is opened or closed.
In_addition, one end_of a lap webbing 202 is fastened_to_a tongue 208 which is releasably_latched_in a buckle 207 also mounted_inboard_the_seat. The lap webbing 202_is taken up from the other_end thereof into an emergency locking or automatic locking_retractor 209 provided_on a side sill. It_has_generally_be known that in a dynamic test of such a_seat belt_system, the forward_tilting of the upper torso of an occupant is delayed,_the degree of movement of his head_is reduced and better influence is therefore given to the severity_of injury as the extendable lap webbing length_(the possible increment of the restraining length_of the lap webbing)_by_elongation of the lap webbing and tightening_of_windings_of_the lap webbing_increases.
As a method_for increasing the_extendable webbing_length of a_seat belt_system, it has_heretofore