WO2013021482A1 - 自動車用シートバックフレームおよびその製造方法 - Google Patents
自動車用シートバックフレームおよびその製造方法 Download PDFInfo
- Publication number
- WO2013021482A1 WO2013021482A1 PCT/JP2011/068267 JP2011068267W WO2013021482A1 WO 2013021482 A1 WO2013021482 A1 WO 2013021482A1 JP 2011068267 W JP2011068267 W JP 2011068267W WO 2013021482 A1 WO2013021482 A1 WO 2013021482A1
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- WIPO (PCT)
- Prior art keywords
- seat back
- back frame
- metal plate
- reclining device
- welded
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/68—Seat frames
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
- B29C70/681—Component parts, details or accessories; Auxiliary operations
- B29C70/683—Pretreatment of the preformed part, e.g. insert
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/22—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being adjustable
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/68—Seat frames
- B60N2/682—Joining means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/90—Details or parts not otherwise provided for
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2205/00—General mechanical or structural details
- B60N2205/50—Interlocking shaft arrangements transmitting movement between hinge mechanisms on both sides of a seat
Definitions
- the present invention relates to an automobile seat back frame, and more particularly to a lightweight automobile seat back frame using a fiber-reinforced composite material and a manufacturing method thereof.
- the front seat back frame for automobiles is not only required to have rigidity to properly support the occupant's body, but also to have high strength that can withstand the heavy loads caused by the acceleration acting on the occupant when the automobile collides.
- the seat back frame As a structure of the seat back frame, a member obtained by bending a metal pipe member or a member obtained by welding a metal plate member by sheet metal welding is generally used.
- the seat back frame is also required to be reduced in weight, and it is considered to manufacture the seat back frame with a resin or a fiber reinforced composite material.
- the reclining device is composed of complicated mechanism parts such as gears to fix the seat back frame at an arbitrary angle in order to ensure an appropriate riding posture of the occupant, and acts on the seat back frame at the time of a vehicle collision. Since the strength which can withstand a moment is required, it is generally made of metal. In the case of the metal seat back frame described above, the reclining device can be directly joined to the seat back frame by welding, but when applying a resin or fiber reinforced composite material to the seat back frame, the reclining device is used. A device for securely fixing to the seat back frame is required.
- Patent Document 1 discloses a seat back frame made of a resin molded product, in which a sheet metal mounting bracket is fixed to the lower end portion of the side frame, and the seat is connected to a hinge mechanism (reclining device) via the bracket.
- a back frame is disclosed.
- the load when transmitting a large moment load acting on the seat back frame to the reclining device in the event of a vehicle collision, there is a high possibility that the load will concentrate on the joint between the resin and the bracket, and both the resin frame / sheet metal bracket will be enlarged. There is a concern to do.
- a post-process such as heat caulking is required.
- Patent Document 2 discloses a seat back frame formed as an integral member by a fiber reinforced composite material including a thermoplastic resin matrix and a reinforcing fiber, and a hinge that is a part of a reclining device is overmolded on the integral member.
- the structure of the back frame is disclosed.
- a structure in which hinges are attached to either the left or right is shown, but in that case, a large moment load acting on the seat back frame at the time of a vehicle collision is applied only to the hinge mechanism on one side. Therefore, there is a concern that the hinge and the seat back frame will be enlarged.
- a structure is shown in which hinges are attached to both the left and right sides by overmolding.
- the shafts of the left and right hinges are displaced due to shrinkage and warpage of the fiber-reinforced composite material after molding, and the sheet Smooth operation of the back frame may be hindered.
- the shape of the hinge is very complicated, and there is a concern that the weight / cost does not decrease.
- the hinge is overmolded while the molded product is inflated with internal pressure, there is a concern that sufficient bonding strength cannot be obtained.
- Patent No. 46666 Japanese Patent No. 3737081
- the present invention increases the weight / cost of the reclining device as much as possible while realizing a production tact level that can be applied to mass-produced automobiles when applying a fiber reinforced composite material to a seat back frame to achieve significant weight reduction. It is an object of the present invention to provide an automobile seat back frame that can be reliably and highly accurately attached by a simple method that does not cause the above and a method for manufacturing the same.
- a first aspect of the present invention is an automobile seat back frame formed of a fiber reinforced composite material including a thermoplastic resin matrix and reinforcing fibers, and includes a seat back frame main body and a reclining device for the seat back frame main body.
- the gist of the present invention is an automobile seat back frame including a metal plate welded to an attachment position and a metal reclining device welded to the metal plate.
- the metal plate may have a disk shape or an elliptical plate shape.
- the seat back frame main body may have an opening having a smaller shape than the metal plate at the reclining device mounting position.
- the metal plate may have a through-hole through which a drive shaft attached to the reclining device passes.
- At least a part of the remaining surface of the one side of the metal plate excluding the joining portion with the reclining device may be welded to the seat back frame main body.
- At least a part of the remaining surface of the both sides of the metal plate excluding the joint portion with the reclining device may be welded to the seat back frame body.
- the seat back frame body may include an upper frame and left and right side frames, and the metal plate may be welded to the left and right side frames.
- vehicle seat back frame may be used for a front seat.
- a method for manufacturing the above-described automobile seat back frame wherein a fiber-reinforced composite material including a thermoplastic resin matrix and reinforcing fibers is heated and softened, and the softening is performed.
- An automotive seat comprising: forming a fiber-reinforced composite material into a shape of a seat back frame main body by cold press molding; and welding a metal plate to the seat back frame main body by insert molding at the time of shaping.
- the gist is that it is a method of manufacturing a back frame.
- the cold press molding may be performed after the metal plate is heated by an induction heating device.
- the metal reclining device for the seat back frame main body which is an important issue, is used. Mounting can be performed with high accuracy and high productivity without increasing the weight / cost as much as possible.
- FIG. 1 is a perspective view of a seat back frame with a reclining device attached according to an embodiment of the present invention.
- FIG. 2 is a perspective view of the seat back frame before attaching the reclining device according to the embodiment of the present invention.
- FIG. 3A is an enlarged cross-sectional view of the seat back frame before attaching the reclining device according to the embodiment of the present invention
- FIG. 3B is an enlarged cross-sectional view of the seat back frame after attaching the reclining device.
- FIG. 4 is a perspective view of a state in which one side of a metal plate (disc shape) is welded.
- FIG. 5 is a perspective view of a state in which both surfaces of a metal plate (disc shape) are welded.
- FIG. 6 is a perspective view of a state in which both surfaces of a metal plate (substantially square shape) are welded.
- FIG. 7 is a perspective view of a state in which one side of a metal plate (a U-shape) is welded.
- FIGS. 8A to 8D are sectional views showing additional processes for increasing the welding strength of the metal plate, and show different examples.
- the fiber reinforced composite material in the seat back frame body 1 of the seat back frame 100 includes reinforced fibers and a thermoplastic matrix resin.
- the form of the reinforcing fiber in the fiber reinforced composite material may be a short fiber, a long fiber, or a continuous fiber, and two or more of these may be used in combination.
- Short fibers are fibers having a fiber length of 0.1 to 10 mm
- long fibers are fibers having a length of 10 to 100 mm
- continuous fibers are fibers having a fiber length of 100 mm or more.
- paper made using chopped strands or the like may be used.
- multiaxial woven fabrics are generally nylon yarns, polyester yarns, glass fibers, which are bundles of fiber reinforcements aligned in one direction and laminated in a sheet form (multiaxial woven fabric base material). This refers to a woven fabric that is stitched with stitch yarns such as yarns, penetrates the laminate in the thickness direction, and reciprocates between the front and back surfaces of the laminate along the surface direction.
- the fiber-reinforced composite material constituting the seat back frame main body 1 may be one in which reinforcing fibers are randomly dispersed, or one having a specific fiber orientation, one in which reinforcing fibers are plane-oriented or uniaxially oriented, or those A combination or a laminate thereof is preferable.
- the fiber reinforced composite material in the seat back frame main body 1 may be a laminate or a sandwich structure of a fiber reinforced composite material portion and a resin only portion.
- the core member may be a composite material and the skin member may be a resin.
- the core member may be a resin-only portion and the skin member may be a composite material.
- the abundance of the thermoplastic resin in the fiber reinforced composite material constituting the seat back frame body 1 is preferably 50 to 1000 parts by weight with respect to 100 parts by weight of the reinforcing fibers. More preferably, it is 55 to 500 parts by weight of the thermoplastic resin with respect to 100 parts by weight of the reinforcing fiber, and further preferably 60 to 300 parts by weight of the thermoplastic resin with respect to 100 parts by weight of the reinforcing fiber.
- thermoplastic resin constituting the molded body is not particularly limited, but vinyl chloride resin, vinylidene chloride resin, vinyl acetate resin, polyvinyl alcohol resin, polystyrene resin, acrylonitrile-styrene resin (AS resin), acrylonitrile-butadiene-styrene.
- ABS resin acrylic resin, methacrylic resin, polyethylene resin, polypropylene resin, polyamide 6 resin, polyamide 11 resin, polyamide 12 resin, polyamide 46 resin, polyamide 66 resin, polyamide 610 resin, polyacetal resin, polycarbonate resin, polyethylene terephthalate Resin, polyethylene naphthalate resin, boribylene terephthalate resin, polyarylate resin, polyphenylene ether resin, polyphenylene sulfide resin, polysulfate Preferred examples include at least one selected from the group consisting of a resin, a polyethersulfone resin, a polyetheretherketone resin, a polylactic acid resin, and a mixture (resin composition) of two or more selected from these resins.
- the resin composition includes a polycarbonate resin and polyester resin composition, a polycarbonate and ABS resin composition, a polyphenylene ether resin and a polyamide resin composition, a polyamide resin and an ABS resin composition, and a polyester resin and nylon. At least one selected from the group consisting of resin compositions and the like is more preferable.
- a fiber reinforced composite material may contain a functional filler and additive in a thermoplastic resin in the range which does not impair the objective of this invention.
- a functional filler and additive in a thermoplastic resin in the range which does not impair the objective of this invention.
- examples include organic / inorganic fillers, flame retardants, UV-resistant agents, pigments, mold release agents, softeners, plasticizers, surfactants, and the like, but are not limited thereto.
- Reinforcing fibers used in the seat back frame body 1 of the seat back frame 100 include glass fibers, polyester fibers, polyolefin fibers, carbon fibers, para-aramid fibers, meta-aramid fibers, boron fibers, At least one selected from the group consisting of azole fiber, alumina fiber and the like is mentioned as a preferable one, and carbon fiber excellent in specific strength and specific elasticity is particularly preferable.
- the reinforcing fiber of the fiber reinforced composite material used for the seat back frame main body 1 does not necessarily need to be one type, and different reinforcing fibers may be used selectively.
- Embodiment of this invention is the seat back frame main body 1 formed with the fiber reinforced composite material containing a thermoplastic resin matrix and a reinforced fiber.
- the metal plate 3 is welded to the reclining device 2 attachment position of the seat back frame main body 1 with the welding surface 3 ⁇ / b> B, and the metal reclining device 2 and the metal plate 3 are welded to each other with the welding surface 4.
- the shape of the seat back frame body 1 is not particularly limited, and may be an integrally molded product or a combination of parts molded separately, but as shown in FIGS.
- the welding strength is more preferable.
- Accessories such as a back cover 1C for protecting the recliner mechanism may be attached to the seat back frame body 1 as necessary.
- the material of the back cover 1C is not limited and can be arbitrarily selected from materials such as metal, resin, fiber reinforced composite material, etc., but considering the joining with the side frame 1B, the thermoplastic resin or the thermoplastic matrix A fiber-reinforced composite material comprising reinforcing fibers is preferable.
- the seat back frame body 1 may be attached with components such as a recliner, a headrest, a suspension mat, a cushion pad, and a skin material.
- the seat back frame main body 1 is combined with these components to form a front seat back, and finally connected to the cushion frame to form a seat assembly.
- the reclining device 2 is used for a general metal seat back frame.
- the seat back frame is fixed at an arbitrary angle, and is composed of complex mechanical parts such as gears and can withstand the moment acting on the seat back frame in the event of a vehicle collision Is required, so it is made of metal.
- the metal material include iron, aluminum, magnesium, titanium, and iron is preferably used from the viewpoint of strength / cost.
- Metal plate The material of the metal plate 3 according to the embodiment of the present invention can be arbitrarily selected from metal materials such as iron, aluminum, magnesium and titanium, but the reclining device 2 is often made of iron.
- the metal plate 3 is also preferably made of the same kind of iron, and is more preferably made of a high-strength steel plate because a large load is applied.
- the thickness of the metal plate 3 is preferably 0.5 to 5 mm, more preferably 1 to 2 mm.
- the shape of the metal plate 3 is arbitrary, and as shown in FIGS. 4 to 7, examples include a substantially disk shape, a substantially oval shape, a substantially square shape, a U-shape, etc. Includes shapes that have been machined inside.
- the substantially square shape or the U-shape can prevent the joint surface from slipping due to the mechanical anchor effect, but the metal plate 3 tends to be large and stress concentration may occur in the seat back frame body 1. Concerned.
- the substantially disc shape can efficiently transmit the moment load acting on the seat back frame main body 1 to the reclining device 2, it can be reduced in size as compared with a general sheet metal bracket. Therefore, it is preferably used.
- the outer diameter of the substantially disk shape is preferably 70 to 150 mm, more preferably 80 to 120 mm.
- the metal plate 3 with a through-hole 3A for easily attaching a drive shaft 2A for operating the left and right reclining devices 2 in conjunction with each other.
- the diameter of the through hole 3A is preferably 10 to 60 mm, more preferably 20 to 50 mm.
- the welding surface 3B of the metal plate 3 with the seat back frame main body 1 has a concavo-convex process 3C, a drilling process 3D, a cut-and-raft process 3E, a gear process 3F, and the like. It is also possible to improve the bonding strength by a mechanical anchor effect by performing post-processing.
- the metal plate 3 is welded to the reclining device mounting position of the seat back frame main body 1 of the seat back frame 100.
- the welded state it is preferable to weld all or part of the remaining surface of the one surface of the metal plate 3 excluding the joint portion with the reclining device 2 to the seat back frame body 1.
- the structure of the mold used for manufacturing the seat back frame main body 1 can be extremely simplified.
- the outer edge of the metal plate 3 is preferably welded to the outside of the opening of the seat back frame body 1.
- the width of the welded portion is preferably 5 to 20 mm, more preferably 10 to 15 mm.
- the welded portion and the welded portion should preferably have a distance of 5 mm or more, more preferably 10 mm or more. It is preferable to take.
- the welding method welding after molding is possible by methods such as vibration welding, ultrasonic welding, hot plate welding, etc., but a fiber reinforced composite material including a thermoplastic resin matrix and reinforcing fibers is heated and softened.
- the manufacturing method of the seat back frame main body 1 which is shaped into the shape of the seat back frame main body 1 by cold press molding, there is a method of welding the metal plate 3 to the seat back frame main body 1 by insert molding at the time of shaping.
- an extra post-process can be omitted, so that the production tact can be improved and the metal plate 3 and the seat back frame main body 1 can be stably welded.
- insert molding at the time of cold press molding it is also preferable to perform cold press molding after heating the metal plate 3 with an induction heating device. As a result, the metal plate 3 and the seat back frame main body 1 can be firmly welded.
- Embodiment of this invention is the seat back frame main body 1 formed with the fiber reinforced composite material containing a thermoplastic resin matrix and a reinforced fiber.
- a metal plate 3 is welded to the reclining device mounting position of the seat back frame main body 1, and the metal reclining device 2 is also welded to the metal plate 3.
- welding methods include gas welding, arc welding, spot welding, laser welding, friction stir welding, and the like, but spot welding and laser welding are preferably used from the viewpoint of productivity and freedom of shape of the joint. Laser welding is more preferably used because it can withstand high strength.
- the molded seat back frame main body 1 Since it is assumed that the molded seat back frame main body 1 is somewhat distorted and warped, it is preferable to attach the left and right recliner devices 2 later by welding via a jig or the like. This makes it possible to ensure a smooth operation of the seat back frame body 1.
- the seat back frame 100 since the seat back frame 100 according to the embodiment of the present invention has high strength and rigidity and is lightweight, the seat back frame 100 is particularly useful for a front seat of an automobile that requires high strength and is difficult to reduce in weight.
- the seat back frame 100 and the manufacturing method thereof according to the present invention can be suitably applied to a front seat of an automobile, and can be supplied at a production tact level that can be applied to a mass-produced automobile.
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- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
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- Composite Materials (AREA)
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Abstract
Description
本発明の実施形態に係るシートバックフレーム100のシートバックフレーム本体1における繊維強化複合材料とは、強化繊維と熱可塑性マトリックス樹脂とを含むものである。繊維強化複合材料中の強化繊維の形態は、短繊維でも、長繊維でも、連続繊維でも良く、これらのうち2種類以上を組み合わせて用いても良い。短繊維とは繊維長が0.1~10mm、長繊維とは繊維長が10mm~100mm、連続繊維とは繊維長が100mm以上のものである。短繊維や長繊維の場合は、チョップドストランド等を用いて抄紙されたペーパーであってもよい。連続繊維の場合は、織編物、ストランドの一方方向配列シート状物及び多軸織物等のシート状、または不織布状でマトリックス樹脂中に含有されていることも好ましい。なお、多軸織物とは、一般に、一方向に引き揃えた繊維強化材の束をシート状にして角度を変えて積層したもの(多軸織物基材)を、ナイロン糸、ポリエステル糸、ガラス繊維糸等のステッチ糸で、この積層体を厚さ方向に貫通して、積層体の表面と裏面との間を表面方向に沿って往復しステッチした織物をいう。
本発明の実施形態に係るシートバックフレーム100のシートバックフレーム本体1に用いられる強化繊維としては、ガラス繊維、ポリエステル繊維、ポリオレフィン繊維、炭素繊維、パラ系アラミド繊維、メタ系アラミド繊維、ボロン繊維、アゾール繊維、アルミナ繊維等からなる群から選択された少なくとも1種が好ましいものとして挙げられ、特に好ましくは比強度と比弾性に優れる炭素繊維である。シートバックフレーム本体1に用いられる繊維強化複合材料の強化繊維は、必ずしも1種である必要はなく、部分的に異なる強化繊維が使い分けられても良く、同じ部分に異なる強化繊維を有する繊維強化複合材料からなる層が積層されていても良い。
本発明の実施形態は、熱可塑性樹脂マトリックスと強化繊維とを含む繊維強化複合材料で形成されたシートバックフレーム本体1である。シートバックフレーム本体1のリクライニング装置2取り付け位置に金属製プレート3が溶着面3Bで溶着されており、金属製のリクライニング装置2と金属製プレート3とが溶接面4で溶接接合されている。シートバックフレーム本体1の形状に特に制限はなく、一体成型品であっても良く、別体で成型された部品が組み合わされたものであっても良いが、図1~図2に示すように、シートバックフレーム本体1をアッパーフレーム1Aと左右のサイドフレーム1Bとから構成することにより、生産タクトの向上や、成型に要する金型の小型/簡略化が実現できる。さらには、金属製プレート3とサイドフレーム1Bの溶着面に十分な成型圧力を負荷できることから溶着強度が向上するので、より好ましい。シートバックフレーム本体1には、必要に応じてリクライナー機構を保護するためのバックカバー1C等の付属部品が取り付けられても良い。バックカバー1Cの材質に制限はなく、金属、樹脂、繊維強化複合材料などの材料から任意に選択が可能であるが、サイドフレーム1Bとの接合を考慮すると、熱可塑性樹脂、もしくは熱可塑性マトリクスと強化繊維を備えてなる繊維強化複合材料とするのが好ましい。
本発明の実施形態に係るリクライニング装置2は、一般的な金属製のシートバックフレームに使用されているものである。乗員の適切な乗車姿勢を確保する目的から、任意の角度でシートバックフレームを固定するため、歯車などの複雑な機構部品から構成され、かつ車両衝突時にシートバックフレームに作用するモーメントに耐えうる強度が必要とされることから、金属で製造されたものである。金属材料としては、鉄、アルミ、マグネシウム、チタンなどが挙げられるが、強度/コストの観点から鉄が好ましく用いられる。
本発明の実施形態に係る金属製プレート3の材質は、鉄、アルミ、マグネシウム、チタンなどの金属材料の中から任意に選択可能であるが、リクライニング装置2が鉄製であることが多いことから、金属製プレート3も同種の鉄製とすることが好ましく、大きな荷重が負荷されることから高張力鋼鈑製であることが、より好ましい。
本発明の実施形態は、シートバックフレーム100のシートバックフレーム本体1のリクライニング装置取り付け位置に金属製プレート3が溶着されている。溶着状態としては、金属製プレート3の片面のうち、リクライニング装置2との接合部分を除いた残りの面の全部もしくは一部をシートバックフレーム本体1に溶着することが好ましく用いられる。この場合、シートバックフレーム本体1の製造に用いる金型の構造を極めてシンプルにすることが可能となる。一方、金属製プレートの両面のうち、リクライニング装置2との接合部分を除いた残りの面の全部もしくは一部をシートバックフレーム本体1に溶着することも、より好ましく用いられる。この場合、金属製プレート3とシートバックフレーム本体1の溶着面3Bの面積が増えるため、金属製プレート3の更なる小型化と、シートバック1に作用するモーメント荷重以外の面外荷重(例えばシートバック左右方向に作用する荷重)に対する強固な構造を実現することが可能となる。
本発明の実施形態は、熱可塑性樹脂マトリックスと強化繊維とを含む繊維強化複合材料で形成されたシートバックフレーム本体1である。シートバックフレーム本体1のリクライニング装置取り付け位置に金属製プレート3が溶着されており、同じく金属製のリクライニング装置2が金属製プレート3に溶接接合されている。溶接方法の例としては、ガス溶接、アーク溶接、スポット溶接、レーザー溶接、摩擦攪拌溶接などが挙げられるが、生産性や接合部の形状自由度の面から、スポット溶接やレーザー溶接が好ましく用いられ、高強度に耐えうることからレーザー溶接がより好ましく用いられる。
1A アッパーフレーム
1B サイドフレーム
1C バックカバー
2 リクライニング装置
2A 駆動軸
3 金属製プレート
3A 貫通口
3B 溶着面
3C 凸凹加工
3D 穴あけ加工
3E 切り起こし加工
3F 歯車加工
4 溶接部(リクライニング装置/金属製プレート)
100 シートバックフレーム
Claims (10)
- 熱可塑性樹脂マトリックスと強化繊維とを含む繊維強化複合材料で形成された自動車用シートバックフレームであって、
シートバックフレーム本体と、
前記シートバックフレーム本体のリクライニング装置取り付け位置に溶着された金属製プレートと、
前記金属製プレートに溶接された金属製のリクライニング装置と、
を備えた自動車用シートバックフレーム。 - 前記金属製プレートは、円板形状または楕円板形状である
請求項1に記載の自動車用シートバックフレーム - 前記シートバックフレーム本体は、前記リクライニング装置取り付け位置に、前記金属プレートより小さい形状の開口部を有する
請求項1または2に記載の自動車用シートバックフレーム。 - 前記金属製プレートは、前記リクライニング装置に取り付けられる駆動軸が貫通する貫通口を有する
請求項1~3のいずれかに記載の自動車用シートバックフレーム。 - 前記金属製プレートの片面のうち、前記リクライニング装置との接合部分を除いた残りの面の少なくとも一部が前記シートバックフレーム本体に溶着されている
請求項1~4のいずれかに記載の自動車用シートバックフレーム。 - 前記金属製プレートの両面のうち、前記リクライニング装置との接合部分を除いた残りの面の少なくとも一部が前記シートバックフレーム本体に溶着されている
請求項1~4項のいずれかに記載の自動車用シートバックフレーム。 - 前記シートバックフレーム本体は、アッパーフレームと、左右のサイドフレームとを備え、
前記金属製プレートは、前記左右のサイドフレームに溶着されている
請求項1~6のいずれかに記載の自動車用シートバックフレーム。 - 前記自動車用シートバックフレームは、フロントシート用である
請求項1~6のいずれかに記載の自動車用シートバックフレーム - 請求項1~8のいずれかに記載の自動車用シートバックフレームの製造方法であって、
熱可塑性樹脂マトリックスと強化繊維とを含む繊維強化複合材料を加熱して軟化させることと、
前記軟化させた繊維強化複合材料をコールドプレス成形によってシートバックフレーム本体の形状に賦形するとともに、賦形の際にインサート成形により金属製プレートを前記シートバックフレーム本体に溶着することと、
を備えた自動車用シートバックフレームの製造方法。 - 前記金属製プレートを誘導加熱装置で加熱してから前記コールドプレス成形を行う
請求項9に記載の自動車用シートバックフレームの製造方法。
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EP11870772.8A EP2743124B8 (en) | 2011-08-10 | 2011-08-10 | Seat back frame for vehicle and method for manufacturing same |
KR1020147006007A KR101613687B1 (ko) | 2011-08-10 | 2011-08-10 | 자동차용 시트 백 프레임 및 그 제조방법 |
JP2013527796A JP5726309B2 (ja) | 2011-08-10 | 2011-08-10 | 自動車用シートバックフレームおよびその製造方法 |
US14/237,879 US9481279B2 (en) | 2011-08-10 | 2011-08-10 | Seat back frame for vehicle and method for manufacturing same |
CN201180072780.5A CN103732445B (zh) | 2011-08-10 | 2011-08-10 | 用于车辆的座椅靠背框架和其制造方法 |
PCT/JP2011/068267 WO2013021482A1 (ja) | 2011-08-10 | 2011-08-10 | 自動車用シートバックフレームおよびその製造方法 |
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EP2743124A1 (en) | 2014-06-18 |
EP2743124B1 (en) | 2018-02-21 |
KR101613687B1 (ko) | 2016-04-19 |
CN103732445A (zh) | 2014-04-16 |
JP5726309B2 (ja) | 2015-05-27 |
CN103732445B (zh) | 2016-10-12 |
EP2743124A4 (en) | 2015-09-23 |
JPWO2013021482A1 (ja) | 2015-03-05 |
US20140232158A1 (en) | 2014-08-21 |
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US9481279B2 (en) | 2016-11-01 |
KR20140039338A (ko) | 2014-04-01 |
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