The present invention was required on February 13rd, 2003, and U.S. provisional application sequence number is on January 13rd, 60/447,118 and 2004, and the U.S. patent application serial numbers is 10/755,897, the rights and interests of application.The two is merged reference at this for various purposes.
The specific embodiment
The invention provides a kind of seat back system that comprises a strenthening member at least, particularly comprise the seat back system of the strenthening member that the auxiliary material of one or more employing is made.Preferably, reinforcing member along seat back panel a main wall extend.According to the present invention, the reinforcing member of being made by suitable material (for example metal) is easy to connect (for example adhesion) to the back of seat of being made by another kind of suitable material, but the connection of these two kinds of materials before is quite difficult.
Fig. 1, shown in 2A and the 2B is a kind of seat back system 20 of improvement, this seat back system 20 typically comprises: one or more base plate 22 (for example 60/40 five equilibrium, whole seat etc.), it crosses over the transverse distance of seat back system.Preferably, each base plate 22 comprises a main wall 26, below only to main wall 26 detailed descriptions in addition.
Seat back panel comprises one or more strenthening member (for example reinforcing member, timber, combination of the two or the like), and it is connected to and stretches out main wall to small part.Preferably, the main wall of each base plate is crossed over the periphery at this base plate basically continuously, and has strenthening member and prolong main wall basically and stretch.Preferably, strenthening member comprises that at least an employing is different from the strenthening member that the another kind of material of main wall is made.Yet strenthening member also can adopt the material close or identical with main wall or back of seat to make.Here the another kind of material of the Cai Yonging composition that is meant a kind of material or material and the chemical composition of back of seat material have at least slightly little different.
Seat back panel can be made by the material of any appropriate, includes but not limited to metal, plastics (strengthen or nonreinforcement plastics all can), other composite or the like.Preferably, a base plate will be arranged at least is plastics.More preferably, all base plates all are plastics (thermoplastic plastic for example, thermoset material or its combination).
According to the present invention, strenthening member comprises that one or more is different from the strenthening member that the material of base plate is made by composition or structure.
The application of microcellular foam also falls within the scope of the present invention.Corresponding with it, a kind of ready-made gas/polymer solution, refining and then nucleation are micropore under astable thermodynamic condition.Can control the growth of nucleon as required.
The making of seat back panel can be adopted the existing manufacturing technology of selected material, and for example forming work is moulded, machined into or other method, thus base plate is processed into required form.When base plate is plastic material, can adopt any suitable plastic manufacturing technology, include but not limited to: injection moulding (including but not limited to outside or inner gas injection method of molding), blow moulding, compression molding, rotomoulding, hot-forming method, extrude vacuum forming, foaming or the like.Also can adopt one or more other manufacturing technologies, insert molding for example, outer molded (over-molding) or its combination.Therefore, as previously mentioned, in one embodiment, utilize the advantage of unlike material and different manufacturing technologies, and help designing additional properties, can produce the mixed type seat unit.
The present invention proposes the use of strenthening member, to strengthen the rigidity of back of seat device, toughness and erosion-resisting characteristics, or the bending moment of local improvement member.
The structure or the pattern of strenthening member comprises " C " shape, " D " shape, " H " shape, " I " shape, " J " shape, " L " shape, " M " shape, " N " shape, " O " property, serpentine, "T"-shaped, " U " shape, " V " shape, " W " shape, " X " shape, " Y " shape, " Z " shape, curvilinear figure (for example sine curve), in a zigzag, "+" shape or the like.
In one embodiment, the jacking of floor member is made by another kind of material, and is connected to the strenthening member on the back of seat.Seat back panel strenthening member should require process according to the reinforcing of main wall, and this processing mode then depends on the back of seat design (for example shape, size, requirement of strength or the like) of concrete self-propelled vehicle.According to the designing requirement of back of seat, strenthening member can be or is smooth, or bending, or big, or little, or short, or long.In addition, strenthening member quantity how much depend on concrete needs or requirement.
In a highly preferred embodiment, strenthening member comprises one or more strenthening member, as the timber of being made by a whole material.As an example, timber can be solid or the groove shape structure, and is connected on the main wall of back of seat.Preferably, for the groove shape timber, it can adopt the gas injection method of molding described in the patent 60/414,040 (application on September 27th, 2002) to make
Fig. 1, shown in 2A and the 2B is the seat back system 20 that comprises a strenthening member 30 at least, described member has a reinforcing member 32 to be connected on the base plate 22.Preferably, reinforcing member 32 is made of another kind of material at least in part.
Reinforcing member 32 can be made into different shape and structure.For example, according to the application and the reinforcing mode of ruggedized equipment 32 in the backrest system 20, strenthening member can be flat, or crooked, or elongated, or short and thick, or how much, or other shape.In a specific implementations, reinforcing member 32 is that a length is L, and width is W, and thickness is that the thin bending of T is rectangular.Length wherein, width and thickness all are normal values, and these sizes change with the difference of strenthening member, and this size also can change because of single reinforcing key.
In general, the size of reinforcing member 32 is not limited by strictness, and it can be depending on the distance or the area of reinforcing member 32 required leaps.Yet, usually be keep reinforcing member 32 little size, especially thickness should be as far as possible little to alleviate its weight.Preferred thickness should be less than about 5mm, more preferably, and less than about 2mm, most preferably, less than about 1mm.For alleviating the weight of reinforcing member 32, one or more spaces (for example through hole) are arranged preferably on it.In this embodiment, for the hollow space that makes reinforcing member 32 occupies larger volume, reinforcing member is skeleton structure basically.
Preferably, but do not require, comprise on the reinforcing member 32 one with seat back system 20 base plates 22 on the surface 36 that is complementary, surface 40.Comprise on the reinforcing member 22 shown in Fig. 1-2 B that a pair of length is the timber 50 of L, with a connecting panel 52 that is connected timber 50, thereby form surface 36, it comprises a flat 54 and a pair of groove 56.Accordingly, a pair of reinforcing member 60 that the match surface 40 on seat back system 20 base plates 22 limits inserts groove 52, and par 64 matches with the par 54 of reinforcing member 32 is identical substantially.
The another kind of material of reinforcing member 32 can be selected from various material, as poly-mer, and glass, metal, fiber (for example glass, carbon fiber, aromatic poly amide metal (aramid metal) or the like), the braiding material, non-braiding material, and their compound or the like.One preferred embodiment in, described another kind of material is at least a portion or all is one or more metals basically, aluminium for example, iron, tungsten, magnesium, steel, tin, copper, titanium, alloy or the like.According to the described another kind of material of a preferred implementation is dead-soft steel basically fully.
The making of reinforcing member 32 can be adopted various manufacturing technologies, and as roll extrusion, casting is dashed and rolled or the like.Also can adopt mold, fabrication techniques such as extrude.
Suitable base plate can comprise a kind of plastic molded articles.Plastic material preferably includes a kind of homopolymer, as polyolefin, polyamide, polyphenylene oxide (polyphenylene oxide) and polystyrene, or a kind of copolymer with low-surface-energy, as polyalkylene terephthalate (polyalkylene terephthalate), copolymer also may have high surface energy.
Preferred plastic material comprises polypropylene, polyamide, polyamide alloy, polyphenylene ether polymer, polyphenylene oxide alloy, poly styrene polymer, polystyrene alloy, polybutylene terephthalate poly-mer and polybutylene terephthalate alloy.Can contain fiber in the plastic material, as short glass fiber, long glass fibres, short natural fiber or the right fiber of the vast of heaven.
Particularly preferred plastic material comprises the polypropylene of having filled short glass fiber, has filled the polypropylene of long glass fibres, has filled the polyamide and the polyamide alloy of having filled glass of glass.Particularly preferably be used for comprising the polypropylene of non-filler, filled the polypropylene of mica, filled the polypropylene of mineral as the plastic material of EAU buffer system.
At some preferably in the embodiment, can fiberfill fibers in the polymerizable material to gain in strength.Though can use the fiber of various sizes (for example length), and discover that fiber is long more, the intensity that increases is high more relatively.Therefore, in a preferred embodiment, polymerizable material is as ABS, PCABS, polypropylene, SMA (phenylethylene-maleic anhydride), PPO (polyphenylene oxide) or other suitable plastic are filled with glass fibre, its mean length approximately surpasses 2mm's, more preferably approximately surpass 4mm, the about 6mm of surpassing that is more preferably, most preferred greatly between 8-20mm.
Be to form strenthening member 30, reinforcing member 32 and seat back system 20 other parts be connected or integrated, can adopt various connections or integrated technology, as spiral nail, clasp, rivet, their combination or the like mechanical fastener.In addition, the manufacturing technology of having mentioned before the employing, reinforcing member 32 is moulded in the relevant position on seat back system 20 at least, the two can be integrated.Reinforcing member 32 is connected with base plate 22, also can adopt heat stake (heat staking), Vibration Welding, sonic welded, their technology such as combination.
In one embodiment, adopt adhesives 66 that reinforcing member 32 is adhered on the base plate 22 of seat back system 20.Preferably, adhesives 66 is applied to respectively in the match surface 40,36 of base plate 22 and reinforcing member 32 one or two.With surface 40 and 36 mutual extrusion, be about to reinforcing member 32 and connect together then with base plate 22.Certainly adhesives 66 is applied on the arbitrary surfaces of reinforcing member 32 or seat back system 20, then the two is bonded together.
Can adopt the adhesives of any appropriate among the present invention.Preferred adhesive 66 compatible with the material of base plate 22 and reinforcing member 32 (that is, be easy to bonding).If adhesives 66 with wherein a kind of material is incompatible, then needs the base plate of being made by incompatible material 22 or the surface of reinforcing member 32 are handled.The representative type processing method comprises application of primer, plasma radiation, the combination of the two etc.
In one embodiment, adhesives is based on the adhesives of urethanes, preferably urethane adhesive (for example polyurethane binder).Alternatively, can comprise a kind of function ingredients in this adhesives, be selected from methyl methacrylate (MMA), acrylonitrile-butadiene-styrene (ABS), polycarbonate (PC), or their compound (for example PC-ABS).In further for the embodiment that selects, adhesives is a silane adhesive, silicone adhesive or their compound.In another embodiment, adhesives is an acryloid cement.Adhesives can also be an epoxy radicals, can comprise polyolefins (polyolefinics), phenylethylene (styrenics), acrylic compounds (acrylics) or their compound.And in another embodiment, preferred adhesive comprises alkyl borane.USP09/466, the issue of 321 (applications on December 17th, 1999) and patent number is respectively: all announced the suitable bonding example in 20020058764 and 20030001410 the patent.Contain suitable modifier in these adhesivess, comprise tackifier, elastic body, impact modifier etc.
In a particularly preferred embodiment, be secure bond reinforcing member 32 and base plate 22, adopted organo-borane/amine complex adhesives or other adhesives of two components.Be found, this adhesives and metal (for example steel) and plastics, especially polypropylene are compatible.Like this, can directly use this adhesives to connect reinforcing member 32 that is made of metal and the seat back system of making by plastics or polypropylene 20, and need not the surface of preoperative treatment reinforcing member 32 or seat back system 20.
A particularly preferred embodiment of the present invention a kind of filling by molding is provided glass polypropylene and/or filled the base plate that the polyamide of glass is made, its surface energy is lower than 45mJ/m
2With a kind of by steel, the reinforcing member that zinc and/or aluminium are made.Like this, preferred adhesive is to be suitable for connecting surface energy to be lower than 45mJ/m
2The adhesives of bottom is applied to it on match surface, the two can be bonded together.This adhesives is a kind of following polymerisable composition generation that has, and this composition comprises:
I) a kind of organo-borane/amine complex;
Ii) one or more have the undersaturated monomer of ethylene linkage, oligomer or poly-mer, and it can be by the free radical polymerization polymerization; And can choose wantonly
Iii) a kind of described complex is separated,, have the polymeric compounds of undersaturated one or more monomers of ethylene linkage, oligomer or poly-mer with initiation to discharge borine.
Especially particularly preferred aspect of the present invention is the use of adhesives in foregoing self-propelled vehicle assembly production method and the fitting process.
The adhesives that proposes among the patent PCT/US00/33806 and and polymerizable composition be highly suitable for the present invention, so that structural elements and strenthening member are bonded together.
The amine that cooperates organoborane compounds, any can cooperation, the amine that can when separating the association medium and exist, separate again with organo-borane.Preferred amine comprises as Zharov at patent USP5, the 41-53 of the 5th row is capable in 539,070, and Skoultchi is at patent USP5,106, capable and the Pocius of 29-58 of the 2nd row is in patent USP5,686 in 928,29 of the 7th row walk to the primary amine that proposes in 36 row of the 10th row in 544, secondary amine contains the polyamine of primary amine or secondary amine group or ammonia; Monthanolamine, secondary dialkyl group diamines or polyoxyalkylene polyamine; Deviny is at patent USP5, in 883,208 30 of the 7th row walk to the diamines that proposes in 56 row of the 8th row with have two or more can with the amine end capping reaction product of the cmpd of the group of amine reaction.About the described resultant of reaction of Deviny, preferred di-primary amine (diprimary amines) comprises alkyl diprimary, aryl diprimary, alkylaryl di-primary amine and polyoxyalkylene diamines; Contain two or more carboxylic acids, carboxylate, carboxylic acid halide, aldehyde, epoxide, the cmpd of pure and mild acrylate group described can comprising with the cmpd of amine reaction.Preferred amine comprises n-octyl amine, 1, and 6-diamino hexane (1, the 6-hexamethylenediamine), diethylamine, dibutylamine, diethylene triamine, dipropylenediamine, 1,3-trimethylene diamine (1, the 3-propane diamine), 1, the 2-trimethylene diamine, 1,2-ethylene diamine, 1,5-pentanediamine, 1,12-docecane diamines, 2-methyl isophthalic acid, 5-pentanediamine, the 3-methyl isophthalic acid, 5-pentanediamine, trien, diethylene triamine.Preferred polyoxyalkylene polyamine comprises the polyethylene oxide diamines, PPO, triethylene glycol (TEG) trimethylene diamine, PolyTHF diamines and poly-
Epoxyethane copolymerization epoxypropane diamines.
Especially, the amine in organo-borane/amine complex can be selected from the amine with amidine structural constituent; Have the aliphatics heterocycle of at least one nitrogen in heterocycle, wherein this heterocyclic compound also can have one or more nitrogen-atoms in heterocycle, oxygen atom, sulphur atom or two key; Additional have one or more hydrogen bonds to accept the primary amine of group, wherein accepts that at primary amine and hydrogen bond two carbon atoms will be arranged between the group at least, preferably has three carbon atoms at least, the intensity of intermolecular or molecule interior effect can increasing B--N key in the complex; Or conjugated imines.
Preferred hydrogen bond is accepted group and is comprised: primary amine, secondary amine, tertiary amine, ether, halogen, polyethers or polyamine.Described heterocycle is the cmpd that contains one or more alicyclic rings, contains nitrogen on one of them ring.Described amidine or conjugated imines can be straight chain, side chain or ring-type.
Preferred organo-borane is trialkylborane or alkyl-cycloalkyl borine in the complex.This borine preferably has molecular formula 1:
B--(R
1)
3Molecular formula 1
Wherein: B is a boron; R
1Be a C
1-10Alkyl, C
3-10Naphthenic base, or by two or more R
1The alicyclic ring of be combined into.
Preferred R
1Be C
1-4Alkyl, even more preferably C
2-4Alkyl, most preferably C
3-4Alkyl.Preferred organo-borane comprises boron triethyl, triisopropyl borine and three normal-butyl borines.
One preferred embodiment in, the amine in the complex is accepted the cmpd of group by containing a primary amine and one or more hydrogen bond, wherein accepts that at primary amine and hydrogen bond two carbon atoms will be arranged between the group at least, preferably has three carbon atoms at least.
Preferably, this amine has molecular formula 2:
NH
2(CH
2)
b(C (R
2)
2)
aX molecular formula 2
Wherein: R
2Be hydrogen, C
1-4Alkyl or C
3-10Naphthenic base; X is that half hydrogen bond is accepted group; A is an integer between 1 and 10; B is 0 or 1, and a and b sum are between 2 and 10.
Preferred R
2Be hydrogen or methyl.
Preferred X is that half hydrogen bond is accepted group, and when hydrogen bond was accepted group and is amine, preferred X was a tertiary amine or secondary amine.Preferred X is--N (R
8) e,--OR
10, or halogen, wherein: R
8Be C
1-10Alkyl, C
3-10Naphthenic base or-(C (R
2)
2)
d--W; R10 is C
1-10Alkyl, C
3-10Naphthenic base or-(C (R
2)
2)
d--W; E equals 0,1 or 2.The X that is more preferably is--N (R
8)
2Or--OR
10
Preferred R
8And R
10Be C
1-4Alkyl or--(C (R
2)
2)
d-W, even more preferably C
1-4Alkyl, most preferably methyl.W is a hydrogen, C
1-10Alkyl or X, even more preferably hydrogen or C
1-4Alkyl.
Preferably, a value is approximately 1 or greater than 1, and more preferably 2 or greater than 2.Preferred a is about 6 or less than 6, and most preferred is about 4 or less than 4.Preferred b value is to be approximately 1.Preferred a and b sum are 2 or about 2 integers, preferredly are approximately 3 or greater than 3.Preferred a and b sum are approximately 6 or less than 6, preferredly are approximately 4 or less than 4.Preferred d is an integer between 1 and 4, more preferably between 2 and 4, be more preferably between 2 and 3.
The amine that preferably has molecular formula 2 is dimethylaminopropylamine, methoxy propanamine, dimethylaminoethylam,ne, dimethylaminobutylam,ne, methoxybutyl amine, methoxyethyl amine, ethoxy propylamine, propoxypropylamine, amine end-blocking polyalkylene ether (for example trimethylolpropane-three (polypropylene glycol, amine end-blocking) ether), aminopropyl morpholine, IPD and aminopropyl propane diamine.
In another embodiment, amine can be the aliphatics heterocycle that has a nitrogen-atoms on the heterocycle at least.Also can contain one or more nitrogen-atoms in this heterocyclic compound, oxygen atom, sulphur atom or two key.In addition, this heterocycle can comprise a plurality of rings, wherein contains nitrogen at least one ring.Preferred this compounds comprises morpholine, piperidines, pyrolidine, piperazine, 1,3,3 trimethyl 6-(azabicyclic) [3,2,1] octanes, thiazolidine, high piperazine (homopiperazine), aziridine, 1,4-(diazabicylo) [2,2,2] octane (DABCO), 1-amino-4-methyl piperazine and 3-pyrrolin.
In the another one embodiment, the amine that energy and organo-borane suitably cooperate is a kind of amidine, can be any cmpd that has the amidine structure, and for cooperating with organo-borane, this amidine must have enough bond energys.Suitable amidine comprises 1,8-(diazabicylo) [5,4] 11 carbon-7-alkene; Tetrahydropyrimidine; 2-methyl-2-imidazoline; With 1,1,3, the 3-TMG.
In a further embodiment, the amine that energy and organo-borane suitably cooperate is conjugated imines, can be all cpds that has the conjugated imines structure, as described in patent PCT/US00/33806, for cooperating with organo-borane, imines must have enough bond energys.This conjugated imines can be a straight chain, side chain imines or epimino.Preferred conjugated imines is the 4-dimethylamino naphthyridine; 2, two (dimethylamino) ring-propyleneimines of 3-; 3-(dimethyl amine) acrolein imines; 3-(dimethylamino) methacrolein imines (3-(dimethylamino) methacrole-inimine).
The mol ratio of preferred amines and organoborane compounds is 1.0: 1.0-3.0: 1.0.When mol ratio is lower than 1.0: 1.0, polymerization, aspects such as complexes stability and viscosity have problem.Can't bring more advantages though mol ratio is higher than 3.0: 1.0, but still can adopt.And amine too much can produce negative influence to the stability of adhesives or polymeric blends.More preferably the mol ratio of amines and organoborane compounds is 1.0: 1.0-2.0: 1.0.
The technology that provides as patent PCT/US00/33806 is provided, is easy to prepare organo-borane/amine complex.
Preferably, polymerizable material comprises acrylate and/or methacrylate compound.Especially preferred acrylate and methacrylate compound, it comprises methyl methacrylate, butyl methacrylate, ethylhexyl methacrylate, isobornyl methacrylate, tetrahydrofurfuryl methacrylate and methyl acrylic acid cyclohexyl methyl esters.
The composition of polymerizable thing can further comprise an amount of cmpd (a kind of association medium of separating) that can react with amine, and the borine that is discharged can make polymerization reaction take place.Required amine reaction compounds is in room temperature or is lower than room temperature, preferably is easy to the material of reaction of formation product at ambient temperature, and a kind of compound of using and solidifying of being easy under environmental conditions is provided then.Usually this compounds comprises acid, aldehyde, isocyanates, acid chloride, sulphonyl chlorides, their compound etc.Preferred amine reaction mixture is acid, especially bronsted acid and lewis acid and patent USP5, the cmpd described in 718,977, more preferably acrylic acid and methyl acrylic acid.
In polymerisable composition, suitable polymeric component massfraction accounts for 20% at least, preferably accounts for 30% at least, preferredly accounts for 40% at least.Individually,, suitable polymerizable components massfraction is no more than 95%, preferably is no more than 90%, especially preferredly is no more than 85%.
Suitable organo-borane/amine complex massfraction accounts for 0.2% at least, preferably accounts for 1% at least, preferredly accounts for 2% at least.In addition, suitable complex massfraction should be no more than 8%, preferably is no more than 6%, and is better as if being no more than 4%.
Exist if separate associating compound, its suitable massfraction accounts for 1% at least, preferably accounts for 1.5% at least, and is best as if accounting for 2% at least.Individually, the suitable associating compound massfraction of separating is no more than 8%, preferably is no more than 6%, especially preferredly is no more than 4%.
Detection through ASTM D1002 system shows: adhesives provided by the present invention can be bonded together the polypropylene member and the strenthening member of having filled 30% glass securely, and need not any component surface is carried out pretreatment.In addition, this adhesives also can use under thermal cycle and high humidity.Suitable thermal cycling temperature is-more than the 40-120 ℃.Humidity can be changed to fully saturated from drying.
The use of this adhesives can be adopted the mode of mentioning among the patent PCT/US00/33806.In addition, can also in compound, add other additive.Provided suitable additive among the patent PCT/US00/33806.
Suitable assembling can stand 100-120 ℃, even the thermal radiation of higher temperature.In addition, this assembling can also be born the weight that is applied in the middle of production process and the use, for example: and clash into bonnet with sudden force, on the bonnet handle, place weight, and the vibrations in the road traveling process and aging.In the middle of the practical application, select adhesive consumption and position according to the design and the structure of self-propelled vehicle.
In case on seat back system 20, used adhesives 66 and reinforcing member 32, then must reserve time enough solidifies (for example partly solidified, integrally curing, solidify air curing, heatcure as required, moisture-curable, chemosetting, photocuring etc.) adhesives 66, be connected on the base plate 26 to guarantee reinforcing member 32.Adhesives is preferably in room temperature (general 20-30 ℃) and solidifies down, also can solidify under higher or lower temperature conditions, to accelerate or the cure time that slows down.For guaranteeing that reinforcing member 32 is connected on the seat back system 20, can in solidification process, use fastener (for example high top drawing pin, clip etc.).In the middle of the use of seat back system 20, these fasteners can be detouchables, and can assist reinforcing member 32 to be connected thereto.
In general, wish this adhesives can show the appropriateness curing after ductility.The ductility of preferred adhesive, with the ductility of reinforcing member 32 materials, or constitute seat back system 20 or base plate 22 material ductility, lower equally high among the two ductility values.Yet the ductility of preferred adhesives, with the ductility of reinforcing member 32 materials, or constitute seat back system 20 or base plate 22 material ductility, higher equally high among the two ductility values.
Favourable result shows: make the back of seat that has the strenthening member that is made of another kind of material, can reach low fabrication cycle according to the present invention.For example, the fabrication cycle of this seat back system can be no more than one minute, preferably is no more than for 40 seconds, preferredly is no more than for 30 seconds, and what be more preferably was no more than for 20 seconds.
In Fig. 1-2 B illustrated embodiment, reinforcing member 32 is connected to the back side (that is: passenger's reverse side on the back of seat) of seat back system 20.In addition, member as shown in the figure can also be set on the seat back system or a plurality of positions of its in-to-in.One or more strenthening members can be arranged on the back side of seat back panel, one or morely can be arranged on the front, or are integrated in the inside of seat back panel.One or more strenthening members can also be along the exterior boundary setting of seat back panel.Also can consider these strenthening members horizontal along seat back panel, vertically, level, vertical, tilt or their array configuration setting.
In this embodiment, reinforcing member 32 is connected in the integrated strenthening member of seat back system 20.And reinforcing member 32 also can be arranged in the space (for example die cavity or through hole) or the plane on.
According to the present invention, seat back panel all can comprise one or more projections in the strenthening member, to assist the strenthening member setting and to be connected on the seat back panel.Preferably, projection can be inserted in the corresponding space (for example die cavity or through hole), and it can be a reinforcing member, the form that seat back panel or both have concurrently.Shown in Figure 3 is a plurality of projections 70 of stretching out from timber 60, and these projections 70 can be inserted the through hole 72 on the reinforcing member 32.
During concrete the application, should be according to following some or all criterions, the design of each strenthening member of optimization and position, or its making pattern in back of seat.For each application, can enjoy with those skilled in the art: use this concrete strenthening member can help to reduce because self-propelled vehicle is fast quickens or slow down soon or bending effect that seat rear passenger or goods (for example roof-mounted center safety strap, the pinnacle of roof-mounted child safety seat and luggage) are caused.For example, one preferred embodiment in, ruggedized construction of selecting for use usually or pattern are that the strenthening member that will have higher bending moment vertically is set to coilable curved ramp place.
Seat back system provided by the invention may be used on front stall, back seat, and folded seat etc. are located.Also can consider to be processed into and be applicable to the child safety seat tether, the seat back system of postmedian safety strap.This system also should meet the standard (for example strength criterion) that pre-establishes.Patent USP60/414, in 040 to seat, tether, safety strap and standard have been carried out detailed discussion.
Though the present invention has only related to automotive vehicle seat system, skilled worker skilled worker will recognize that this system also can be applicable to other seat, as aircraft and bus seat or auditorium and stadium seat.
Below only be to exemplified embodiment of the present invention.And those skilled in the art are by above said content, and accompanying drawing and claim can recognize, and are such just as defined by the following claims, under the prerequisite that does not depart from character of the present invention and scope, can carry out various changes, improve and distortion.Especially for described compound, assembling is installed, and the various functions that component etc. show under the situation of no certain illustrated, are not equal to term institute description scheme even if having the item of specific function, adopt this term description corresponding entry yet.In addition, the concrete feature that relates in embodiment can combine with the feature in other illustrated embodiment.