201033035 六、發明說明： 【發明所屬之技術領域】 本發明係關於一種輕量且剛性優異之車輛用板零件。 【先前技術】 近年’從車輛之輕量化的觀點，已提出許多樹脂製之 板零件作爲板金製板的替代品。但，樹脂製之車輛用板零 0 件係剛性不足。又’爲提高剛性之方法，使樹脂增厚，或 大量地使用補強材係損及原來目的之輕量化。例如，在專 利文獻1或專利文獻2中係已提出樹脂製之後門構造之強化 構造，但未硏究維持樹脂製板的輕量化同時可提高剛性。 又，爲提昇輕量化與剛性’一般已知使用碳纖維複合 材料作爲補強材之方法，但在以往的方法中係大量使用昂 貴的碳纖維，經濟上有困難點。 (專利文獻1)特開平8-2 5 8 56 8號 φ (專利文獻2 )特開2006- 1 1 6997號公報 【發明內容】 發明之揭示 因此，本發明之目的係在於提供一種較習知之樹脂製 板更輕量化，且扭轉剛性及彎曲剛性已被改善之樹脂製的 車輛用板零件。又，本發明之目的在於提供一種廉價之樹 脂製的車輛用板零件。 本發明人經專心硏究一種儘可能地減少用於車輛之垂 -5- 201033035 直板零件的補強構造體之使用量，謀求輕量化，同時並提 昇剛性之方法。其結果，發現若配置補強構造體成有關車 輛用板零件之投影圖的圖心之極慣性矩爲特定的範圍，可 得到輕量且扭轉剛性及彎曲剛性優異之車輛用板零件，終 完成本發明。 亦即，本發明之車輛用板零件，係由樹脂成形體及含 有比彈性率5x1 08cm以上之強化纖維的補強構造體所構成 ，並同時滿足下述式（1)及（2)； 0.60>S2/S1>0.04 (1) (S1係以該零件之投影面積成爲最大的投射角投影時之該 零件全體的投射面積；S2係以相同之投射角投影時之僅補 強構造體的投射面積） 0.95>J2/J1>0.1 5 (2) (J1係以該零件之投影面積成爲最大的投射角投影時，有 關該零件全體之投影圖的圖心（C)之極慣性矩；J2係以 相同之投射角投影時之僅補強構造體的投影圖之有關前述 圖心（C )之極慣性矩）。 本發明之由樹脂成形體與補強構造體所構成之車_用 板零件的製造方法，其特徵在於··使含有比彈性率5X 108cm以上之強化纖維的補強構造體以同時滿足下述式（1 )及（2)之方式配置於樹脂成形體； 0.60>S2/S 1 >0.04 (1) (S1係以該零件之投影面積成爲最大的投射角投影時之該 零件全體的投射面積；S2係以相同之投射角投影時之僅補 201033035 強構造體的投射面積） 0.95>J2/J1>0.15 (2) (J1係以該零件之投影面積成爲最大的投射角投影時’有 關該零件全體之投影圖的圖心（C)之極慣性矩；J2係以 相同之投射角投影時之僅補強構造體的投影圖之有關前述 圖心（C )之極慣性矩）。 又本發明係提昇由樹脂成形體與補強構造體所構成之 • 車輛用板零件的剛性之方法，其特徵在於：使含有比彈性 率5x1 0s cm以上之強化纖維的補強構造體以同時滿足下述 式（1)及（2)之方式配置於樹脂成形體； 0.60>S2/S1>0.04 (1) (S1係以該零件之投影面積成爲最大的投射角投影時之該 零件全體的投射面積；S2係以相同之投射角投影時之僅補 強構造體的投射面積） 0.95>J2/J1>0.15 (2) φ ( J1係以該零件之投影面積成爲最大的投射角投影時，有 關該零件全體之投影圖的圖心（C )之極慣性矩；J 2係以 相同之投射角投影時之僅補強構造體的投影圖之有關前述 圖心（C )之極慣性矩）。 用以實驗發明之最佳形態 本發明係由含有樹脂成形體及比彈性率5xl〇8Cln以上 的強化纖維之補強構造體所構成的車輛用板零件。以下， 詳細說明本發明。 201033035 (樹脂成形體） 本發明中之樹脂成形體係亦可爲單一的構造、或被分 割成複數之構造被複合者，但被連結成一體狀作爲板者。 例如，門板係由外裝板與內裝板所構成，有時其等被接合 而構成零件，但此時，樹脂成形體謂合倂外裝板與內裝板 之部分。 構成樹脂成形體之樹脂係熱塑性樹脂或熱硬化性樹脂 ，較佳係熱塑性樹脂及其等之組成物。具體上係可舉例如 聚碳酸酯樹脂、聚酯樹脂、聚烯烴系樹脂、丙烯酸樹脂、 聚乳酸、聚醯胺樹脂' AS A樹脂、ABS樹脂、聚醚酮樹脂 、聚醚醯亞胺樹脂、聚苯醚樹脂、聚苯氧樹脂、聚楓樹脂 、聚醚颯樹脂、聚醚醯亞胺樹脂、聚醚醚酮樹脂、聚苯硫 醚樹脂、聚醯胺醯亞胺樹脂、聚碳酸酯樹脂與聚酯樹脂之 組成物、聚碳酸酯樹脂與ABS樹脂之組成物、聚苯醚樹脂 與聚醯胺樹脂之組成物、聚醯胺樹脂與ABS樹脂之組成物 '聚酯樹脂與尼龍樹脂之組成物、酚樹脂、環氧樹脂、不 飽和聚酯樹脂、三聚氰胺樹脂、聚胺基甲酸酯樹脂、聚醯 亞胺樹脂等。 樹脂成形體係宜爲至少一種選自由聚碳酸酯樹脂、環 氧樹脂、聚烯烴系樹脂、聚酯樹脂及聚醯胺樹脂所構成之 群的樹脂之成形體。 在本發明中樹脂成形體亦可含有塡充劑纖維。塡充劑 纖維可舉例如玻璃纖維、聚酯纖維、聚烯烴纖維、碳纖維 -8 - 201033035 、對位系芳醯胺纖維、間位系芳醯胺纖維、硼纖維、唑纖 維、氧化鋁纖維。其中，就經濟性或生產性而言，宜塡充 劑纖維爲玻璃纖維、聚酯纖維。 樹脂成形體中之塡充劑纖維的含有量係相對於樹脂 100體積份，宜爲10〜100體積份，更宜爲10〜5〇體積份。樹 脂成形體中之塡充劑纖維的含量少時，若以本發明方法補 強，可提供一種輕量化且彎曲剛性及扭轉剛性已被改善之 Φ 樹脂製的車輛用板零件。因此，塡充劑纖維之含量愈少時 ，愈更顯現本發明之效果。從此觀點，塡充劑纖維的含有 量相對於樹脂100體積份，宜爲10〜30體積份。 樹脂成形體中之塡充劑纖維係不論其形態，可爲短纖 維或長纖維之不連續纖維，亦可爲連續纖維。短纖維謂纖 維長爲0.1〜l〇mm者。長纖維謂纖維長爲1〇 mm~100 mm者 。連續纖維謂纖維長爲1〇〇 mm以上者。不連續纖維時係亦 可使用切股等所抄紙之紙。連續纖維時係亦宜爲編織物， φ 股之一者方向排列片狀物及多軸織物等之片狀、或以不織 布狀於基質樹脂中所含有者。又，使多軸織物一般使朝一 方向拉齊之纖維強化材的束形成片狀而改變角度而層合者 (多軸織物基材），謂以尼龍絲、聚酯絲、玻璃纖維絲等 之針織絲，使此層合體朝厚度方向貫通，而使層合體之表 面與背面之間沿著表面方向而往復進行，針織之織物。樹 脂成形體係可爲強化纖維隨機分散者或形成特定之纖維配 向者，纖維宜爲面配向者或一軸配向者，或其等之組合， 或其等之層合體。樹脂成形體中之塡充劑形態係短纖維、 -9 - 201033035 或長纖維之不連續纖維隨機分散從生產性而言’佳。亦即 ，本發明之較佳形態係樹脂成形體相對於樹脂100體積份 ，爲含有10〜3 0體積份之不連續塡充劑纖維者。 樹脂成形體係可以射出成形、吹塑成形、含有熱壓/ 冷壓的壓縮成形、真空成形、壓空成形等進行成形。 樹脂成形體係可具有窗部。 (補強構造體） _ 構成補強構造體之強化纖維的比彈性率爲5x1 〇8cm以 上，宜爲l〇xl〇8cm以上。使用比彈性率爲未達5xl08cm之 纖維時，補強纖維每重量之補強效率低，輕量化效果小。 強化纖維可舉例如碳纖維、對位系芳醯胺纖維、硼纖 維、唑纖維、氧化鋁纖維。其中，對位系芳醯胺纖維、碳 纖維因比彈性率高，佳。201033035 VI. Description of the Invention: [Technical Field of the Invention] The present invention relates to a panel part for a vehicle which is lightweight and excellent in rigidity. [Prior Art] In recent years, many resin-made board parts have been proposed as a substitute for sheet metal boards from the viewpoint of weight reduction of vehicles. However, the number of pieces of the resin-made vehicle board is insufficient. Further, in order to increase the rigidity, the resin is thickened, or a large amount of the reinforcing material is used and the original purpose is lightened. For example, in Patent Document 1 or Patent Document 2, a reinforced structure of a resin-made back door structure has been proposed, but the weight of the resin-made plate is maintained and the rigidity is improved. Further, in order to improve the weight and rigidity, it is generally known to use a carbon fiber composite material as a reinforcing material. However, in the conventional method, a large amount of expensive carbon fiber is used, which is economically difficult. (Patent Document 1) Japanese Laid-Open Patent Publication No. Hei No. Hei. No. Hei. No. 2006- 1 1 6997. SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a conventional one. A resin-made vehicle panel component that is lighter in weight and has improved torsional rigidity and bending rigidity. Further, an object of the present invention is to provide a panel member for a vehicle made of an inexpensive resin. The present inventors have focused on a method of reducing the amount of reinforcing structure used for a straight part of a vehicle, and reducing the amount of the reinforcing structure used for the vehicle as much as possible, and at the same time improving the rigidity. As a result, it has been found that when the reinforcing structure is placed in a predetermined range in which the moment of inertia of the projection of the vehicle panel member is in a specific range, a vehicle panel component that is lightweight, has excellent torsional rigidity and bending rigidity, and is finally completed. invention. In other words, the panel member for a vehicle of the present invention comprises a resin molded body and a reinforcing structure comprising reinforcing fibers having a specific modulus of elasticity of 5 x 1 08 cm or more, and simultaneously satisfies the following formulas (1) and (2); ;S2/S1>0.04 (1) (S1 is the projection area of the entire part when the projection area of the part is projected to the maximum projection angle; and S2 is the projection area of only the reinforcing structure when projected at the same projection angle; 0.95>J2/J1>0.1 5 (2) (J1 is the moment of inertia of the centroid (C) of the projection view of the whole part when the projection area of the part is projected to the maximum projection angle; J2 The projection of the reinforcing structure only at the same projection angle is related to the polar moment of inertia of the aforementioned centroid (C). A method for producing a vehicular-vehicle component comprising a resin molded body and a reinforcing structure according to the present invention is characterized in that a reinforcing structure containing a reinforcing fiber having a specific modulus of elasticity of 5×108 cm or more satisfies the following formula ( 1) and (2) are disposed in the resin molded body; 0.60>S2/S 1 > 0.04 (1) (S1 is the projected area of the entire part when the projection angle of the part is projected to be the largest projection angle ;S2 is the projection area of the 201033035 strong structure when projected at the same projection angle) 0.95>J2/J1>0.15 (2) (J1 is the projection angle at which the projected area of the part becomes the largest] The moment of inertia of the centroid (C) of the projection view of the entire part; J2 is the polar moment of inertia of the above-mentioned centroid (C) of the projection view of the reinforcing structure when projected at the same projection angle. Further, the present invention is a method for improving the rigidity of a panel member for a vehicle which is composed of a resin molded body and a reinforcing structure, and is characterized in that a reinforcing structure containing a reinforcing fiber having a specific modulus of elasticity of 5 x 1 0 cm or more is simultaneously satisfied. (1) and (2) are disposed in a resin molded body; 0.60>S2/S1> 0.04 (1) (S1 is a projection of the entire part when the projection angle of the part is projected to be the largest projection angle Area; S2 is the projection area of only the reinforcing structure when projected at the same projection angle) 0.95> J2/J1>0.15 (2) φ (J1 is the projection angle at which the projection area of the part becomes the largest, The moment of inertia of the centroid (C) of the projection map of the entire part; J 2 is the polar moment of inertia of the graph (C) of the projection of the reinforcing structure when projected at the same projection angle. BEST MODE FOR CARRYING OUT THE INVENTION The present invention relates to a panel member for a vehicle comprising a resin molded body and a reinforcing structure having a reinforcing fiber having a specific modulus of elasticity of 5 x 10 8 or more. Hereinafter, the present invention will be described in detail. 201033035 (Resin molded body) The resin molding system in the present invention may be a single structure or a composite in which a plurality of structures are divided, but are integrally joined as a plate. For example, the door panel is composed of an exterior panel and an interior panel, and may be joined to form a component. However, in this case, the resin molded body is a portion of the outer panel and the inner panel. The resin-based thermoplastic resin or thermosetting resin constituting the resin molded body is preferably a thermoplastic resin and a composition thereof. Specifically, for example, a polycarbonate resin, a polyester resin, a polyolefin resin, an acrylic resin, a polylactic acid, a polyamide resin, an AS A resin, an ABS resin, a polyether ketone resin, a polyether phthalimide resin, Polyphenylene ether resin, polyphenylene oxide resin, poly maple resin, polyether oxime resin, polyether oxime imide resin, polyether ether ketone resin, polyphenylene sulfide resin, polyamidoximine resin, polycarbonate resin Composition with polyester resin, composition of polycarbonate resin and ABS resin, composition of polyphenylene ether resin and polyamide resin, composition of polyamine resin and ABS resin 'polyester resin and nylon resin A composition, a phenol resin, an epoxy resin, an unsaturated polyester resin, a melamine resin, a polyurethane resin, a polyimide resin, or the like. The resin molding system is preferably a molded body of at least one resin selected from the group consisting of polycarbonate resins, epoxy resins, polyolefin resins, polyester resins, and polyamide resins. In the present invention, the resin molded body may also contain a ruthenium fiber. The filler fibers may, for example, be glass fibers, polyester fibers, polyolefin fibers, carbon fibers -8 - 201033035, para-arylene fibers, meta-linamide fibers, boron fibers, azole fibers, alumina fibers. Among them, in terms of economy or productivity, the suitable binder fibers are glass fibers and polyester fibers. The content of the anchoring fiber in the resin molded body is preferably 10 to 100 parts by volume, more preferably 10 to 5 parts by volume, per 100 parts by volume of the resin. When the content of the ruthenium fibers in the resin molded article is small, the stencil-made vehicular plate member which is lightweight and has improved bending rigidity and torsional rigidity can be provided by the method of the present invention. Therefore, the less the content of the ruthenium fibers, the more the effects of the present invention are exhibited. From this point of view, the content of the sputum filler fiber is preferably 10 to 30 parts by volume based on 100 parts by volume of the resin. The ruthenium fibers in the resin molded body may be discontinuous fibers of short fibers or long fibers, or may be continuous fibers, regardless of the form thereof. Short fibers are said to have a fiber length of 0.1 to l 〇 mm. Long fibers are those with a fiber length of 1〇 mm~100 mm. Continuous fibers are those in which the fiber length is 1 mm or more. In the case of discontinuous fibers, it is also possible to use paper such as diced paper. The continuous fiber is also preferably a woven fabric, and one of the φ strands is arranged in the form of a sheet or a multiaxial fabric or a non-woven fabric in the matrix resin. Further, the multiaxial fabric is generally formed by forming a sheet of a fiber-reinforced material which is aligned in one direction to form a sheet shape and changing the angle, and the laminate (multi-axial fabric substrate) is a nylon yarn, a polyester yarn, a glass fiber yarn or the like. The knitted fabric is a fabric which is knitted so that the laminate penetrates in the thickness direction and reciprocates between the surface and the back surface of the laminate along the surface direction. The resin forming system may be a random dispersion of reinforcing fibers or a specific fiber-aligning body, and the fibers may be a face-oriented or a one-axis aligner, or a combination thereof, or a laminate thereof. The form of the ruthenium in the resin molded body is a short fiber, and the discontinuous fibers of -9 - 201033035 or long fibers are randomly dispersed in terms of productivity. In other words, the resin molded article of the preferred embodiment of the present invention contains 10 to 30 parts by volume of discontinuous fluorene fiber with respect to 100 parts by volume of the resin. The resin molding system can be formed by injection molding, blow molding, compression molding including hot pressing/cold pressing, vacuum forming, pressure forming, or the like. The resin forming system may have a window portion. (Reinforcing structure) _ The reinforcing elastic fiber constituting the reinforcing structure has a specific elastic modulus of 5 x 1 〇 8 cm or more, preferably l 〇 x l 〇 8 cm or more. When a fiber having a specific modulus of less than 5 x 10 8 cm is used, the reinforcing fiber has a low reinforcing efficiency per weight and a small weight reduction effect. The reinforcing fiber may, for example, be carbon fiber, para-arylene fiber, boron fiber, azole fiber or alumina fiber. Among them, the para-arylene fiber and the carbon fiber are preferably high in specific modulus.
補強構造體係含有基質樹脂，但基質樹脂可使用熱硬 化樹脂及/或熱塑性樹脂。 Q 熱硬化樹脂可舉例如不飽和聚酯樹脂、乙烯基酯樹脂 、環氧樹脂、酚樹脂、二烯丙基酞酸酯樹脂、二環戊二烯 系樹脂等。熱塑性樹脂可舉例如聚胺基甲酸酯樹脂、聚矽 氧樹脂、聚烯烴系樹脂、聚醯胺樹脂、聚酯樹脂、聚胺基 甲酸酯樹脂、聚丙烯酸樹脂、聚碳酸酯樹脂、聚乳酸、聚 苯氧樹脂、聚颯樹脂、聚醚颯樹脂、聚醚醯亞胺樹脂、聚 醚醚酮樹脂、聚苯硫醚樹脂、聚醯胺醯亞胺樹脂等。 補強構造體之基質樹脂係宜爲至少一種選自由聚醯胺 -10- 201033035 樹脂、聚烯烴系樹脂及聚酯樹脂所構成之群的樹脂。 補強構造體中之強化纖維係宜進行特定之纖維配 宜纖維爲面配向者或單軸配向者或其等之組合，或其 層合體。補強構造體係宜連續之強化纖維實質上單軸 。此處實質上單軸配向係構成之連續纖維的80%以上 於同一方向。 補強構造體中之強化纖維的含有量係相對於基質 φ 100體積份，宜爲40〜3 00體積份，更宜爲60〜150體積份 補強構造體係可以射出成形、吹塑成形、含熱層 壓之壓縮成形、真空成形、壓空成形、拉擠（Pultri )成形、噴塗法、帶壓成形（tape pressment)、纏 型法（Filament Winding)、手積層（hand lay up) 脂轉注成型（Resin Transfer Molding )、樹脂膜浸入 等進行成形。 補強構造體係可採取板狀之構造、棒狀之構造、 ❹ 束、Η型束、C型束等之中實構造、或組合其等之構造 ，可採取如任意截面形狀之管體的中空構造、帽截面 、複網構造、其等之中空部塡充樹脂或多孔質材之構 其等之組合、或與其等與中實構造組合之構造。 補強構造體係可爲單一之構造，或亦可爲被分割 數之構造，相對於樹脂成形體，可使用插入工法、外 法、以接著劑之接合、機械性結合、嵌合、鈎、固定 之方法而進行複合。如門板般，由外裝板與內裝板所 且接合其等而構成零件時，補強構造體係亦可設置於 向， 等之 配向 配置 樹脂 〇 S /冷 ision 繞成 、樹 工法 I型 。又 挫、、生 稱：is 造、 成複 側工 子等 構成 外裝 -11 - 201033035 板與內裝板之間，亦可相對於外裝或內裝之任一者而配置 於其內側或外側。於圖6表示具有外裝板與內裝板之本發 明的背門之適用例。 (彈性層） 本發明之車輛用板零件係宜於樹脂成形體與補強構造 體之間具有彈性層。彈性層之厚度宜爲0_5mm以上1 0mm以 下，更宜爲1mm以上5mm以下。彈性層亦可配置於樹脂成 形體與補強構造體之全面，亦可配置於一部分。於圖6表 示具有彈性層之本發明的背門之適用例。彈性層之彈性率 爲0.0001 GPa以上0.1 GPa以下。宜爲0.001 GPa以上0.1 GPa以下。 (投射面積） 本發明之車輛用板零件係其特徵在於：有關該零件全 體及補強構造體之投射面積滿足下述式（1 ) 。 @ 0.60>S2/S1>0.04 (1) S1係以該車輛用板零件之投影面積成爲最大的投射角 投影時之該車輛用板零件全體的投射面積；S2係以相同之 投射角投影時之僅補強構造體的投影面積。補強構造體爲 複數已分離之補強構造體的集合時，以合算全部之補強構 造體的投影面積者作爲S2。 在（1)中S2/S1爲（K60以上時係補強構造體之使用量 變多，損及經濟性及輕量性。又，S2/S1爲0.04以下時，垂 -12- 201033035 直板零件的剛性不足。S2/S1宜爲0.2〜0.6、更宜爲0.3〜0.5 〇 樹脂成形體不含有塡充劑纖維時係宜爲 0.60>S2/S1>0.05 ⑴’ 樹脂成形體相對於樹脂100體積份，含有10〜3 0體積份 之不連續塡充劑纖維時係宜爲 0.55>S2/S 1>0.04 (1)” (極慣性矩） 本發明之車輛用板零件係其特徵在於：有關樹脂成形 體、及補強構造體之投影圖的圖心之極慣性矩滿足下述式 (2 )。 0.95>J2/J1>0.1 5 (2) J1係以該車輛用板零件之投影面積成爲最大的投射角 投影時，有關該車輛用板零件全體之投影圖的圖心（C) φ 之極慣性矩；J2係以相同之投射角投影時之僅補強構造體 的投影圖之有關前述圖心（C )之極慣性矩。 極慣性矩均謂慣性極矩，如次式（3)所示般使從圖 心的距離之二次方r涵蓋對象之全面積而積分者。The reinforcing structure system contains a matrix resin, but the matrix resin may be a thermosetting resin and/or a thermoplastic resin. The Q thermosetting resin may, for example, be an unsaturated polyester resin, a vinyl ester resin, an epoxy resin, a phenol resin, a diallyl phthalate resin or a dicyclopentadiene resin. The thermoplastic resin may, for example, be a polyurethane resin, a polyoxyl resin, a polyolefin resin, a polyamide resin, a polyester resin, a polyurethane resin, a polyacryl resin, a polycarbonate resin, or a poly Lactic acid, polyphenylene oxide resin, polyfluorene resin, polyether oxime resin, polyether oxime resin, polyether ether ketone resin, polyphenylene sulfide resin, polyamidoximine resin, and the like. The matrix resin of the reinforcing structure is preferably at least one selected from the group consisting of polyamidene-10-201033035 resin, polyolefin resin, and polyester resin. The reinforcing fiber in the reinforcing structure is preferably a specific fiber-fitting fiber which is a face-aligner or a uniaxial aligner or a combination thereof, or a laminate thereof. The reinforcing structure system should be continuous reinforced fiber substantially uniaxial. Here, substantially 80% or more of the continuous fibers composed of the uniaxial alignment system are in the same direction. The reinforcing fiber content in the reinforcing structure is preferably 40 to 300 parts by volume, more preferably 60 to 150 parts by volume, based on the matrix φ 100 parts by volume, and the reinforcing structure system can be injection molded, blow molded, and a hot layer. Pressure compression molding, vacuum forming, pressure forming, pultrusion forming, spray coating, tape pressment, Filament Winding, hand lay up, fat transfer molding (Resin Transfer Molding), resin film immersion, etc. are formed. The reinforcing structure system may take the form of a plate-like structure, a rod-like structure, a bundle, a bundle of beams, a C-beam, or the like, or a combination thereof, and may adopt a hollow structure of a pipe body having an arbitrary cross-sectional shape. A combination of a hat section, a multi-grid structure, a hollow portion of a resin, a porous material, or the like, or a structure in combination with a medium-solid structure. The reinforcing structure system may be a single structure or may be a structure having a divided number. For the resin molded body, an inserting method, an external method, bonding with an adhesive, mechanical bonding, fitting, hooking, and fixing may be used. The method is compounded. In the case of a door panel, when the outer panel and the inner panel are joined to each other to form a component, the reinforcing structure system may be disposed in the direction, and the resin 〇 S / cold ision winding, and the woodworking method I may be arranged. Frustration, and birth: is made, made into a side, and so on. -11 - 201033035 Between the board and the interior board, it can be placed on the inside with respect to either the exterior or the interior. Outside. Fig. 6 shows an application example of the back door of the present invention having an exterior board and an interior board. (Elastic layer) The sheet member for a vehicle of the present invention preferably has an elastic layer between the resin molded body and the reinforcing structure. The thickness of the elastic layer is preferably 0 mm or more and 10 mm or less, more preferably 1 mm or more and 5 mm or less. The elastic layer may be disposed in the entirety of the resin molded body and the reinforcing structure, or may be disposed in a part. Fig. 6 shows an application example of the back door of the present invention having an elastic layer. The elastic layer has an elastic modulus of 0.0001 GPa or more and 0.1 GPa or less. It should be 0.001 GPa or more and 0.1 GPa or less. (Projection Area) The panel component for a vehicle according to the present invention is characterized in that the projection area of the entire component and the reinforcing structure satisfies the following formula (1). @0.60>S2/S1>0.04 (1) S1 is the projection area of the entire vehicle panel part when the projected area of the vehicle panel component is projected to the maximum; S2 is projected at the same projection angle. The projected area of the reinforcing structure only. When the reinforcing structure is a collection of a plurality of separated reinforcing structures, the projection area of all the reinforcing structures is calculated as S2. In (1), S2/S1 is (when K60 or more, the amount of reinforcing structure used is increased, which is economical and lightweight. Further, when S2/S1 is 0.04 or less, the rigidity of the vertical member is -12-201033035. S2/S1 is preferably 0.2 to 0.6, more preferably 0.3 to 0.5. The resin molded body is preferably 0.60> When the discontinuous sputum fiber is contained in an amount of 10 to 30 parts by volume, it is preferably 0.55 > S2 / S 1 > 0.04 (1)" (polar moment of inertia) The sheet component for a vehicle of the present invention is characterized by: The polar moment of inertia of the graph of the projection of the resin molded body and the reinforcing structure satisfies the following formula (2). 0.95>J2/J1>0.1 5 (2) The projected area of the panel component for the vehicle is J1 At the maximum projection angle projection, the polar moment of inertia of the centroid (C) φ of the projection view of the entire panel part of the vehicle; J2 is a projection view of only the reinforcing structure when projected at the same projection angle. The moment of inertia of the heart (C). The moment of inertia is called the moment of inertia, which is the distance from the center of the figure as shown in the following equation (3). The quadratic r covering the whole area of the object and integral person.
Ip= I (r2xdA) (3) (Ip係極慣性矩，r爲微小面積（dA )與圖心之距離） 在實際之計算中式（3)之値亦可藉微分化來求出。 在式（2)中J2/J1爲0.95以上時係式（1)之S2/S1未 達6，強化纖維被過剩地使用，在經濟性不佳，在J2/J1爲 -13- 201033035 0.15以下，S2/S1大於0.05時，車輛用板零件之剛性不足。 J 2 / J 1 宜爲 0.2 ~ 0.9 5、更宜爲 0 · 3 〜0 · 9。 樹脂成形體不含有塡充劑纖維時係宜爲 0.95>J2/J1>0.20 (2)， 樹脂成形體相對於樹脂100體積份，含有10〜30體積份 之不連續塡充劑纖維時係宜爲 0.90>J2/J1>0.15 (2)” 本發明之車輛用板零件係由樹脂成形體、及補強構造 q 體所構成，但取得設計圖或實際之成形體的零件尺寸，算 出有關各別之投射面積及投影圖之圖心的極慣性矩。 本發明之車輛用板零件係亦可具有窗部等之玻璃部分 ，不論面板之窗部占有的比率及形狀。本發明之車輛用板 零件的投影面積包含窗部者。窗部爲可動式時係形成完全 關閉窗之狀態，或，依據其之狀態的形態。 又，車輛用板零件係亦可具有被固定於樹脂成形體之 金屬等的零件。此時，金屬零件若從車輛用板零件之外側 © 線突出，投射面積亦包含金屬零件之突出部分。 接合補強構造體之車輛用板零件中的各參數之確認方 法係可舉例：使車輛用板零件呈格子狀以縱橫200分割切 割，從其截面構造使該車輛用板零件及補強構造體復元’ 算出SI、S2、Jl、J2之各參數的方法。 (車輛用板零件） 於車輛用板零件中係有垂直板零件及水平板零件。車 -14- 201033035 輛用垂直板零件係相對於車輛之外裝部的地面以45°以上 之角度配置的板狀零件，可舉例如背門、擋泥板、前門、 後門、側門等。車輛用水平板零件係相對於車輛之外裝部 的地面以未達45°之角度所配置的板狀零件，可舉例如引 擎蓋、車頂蓬等。本發明之車輛用板零件宜可舉例如背門 、側門、引擎蓋或車頂蓬。 本發明之較佳的態樣以圖說明。圖中，1爲樹脂成形 體、2爲窗部、3之條紋模樣所示者爲補強構造體。補強構 造體宜形成以條狀所示之單軸配向構造物。 圖3係於背門板配置補強構造體（3)之汽車的背門之 例。S2/S1之値爲0.2、J2/J1之値爲0.4。 圖4係於背門板配置補強構造體（3 )之汽車的背門之 例。S2/S1之値爲0.3、J2/J1之値爲0.6。 圖5係於背門板配置補強構造體（3 )之汽車中的背門 之例。S2/S1之値爲0.3、J2/J1之値爲0.3。 圖6係表示汽車之背門的外裝板（6 )、補強構造體（ 3)、彈性層（7)、內裝板（8)之位置的圖。 圖7係表示舉出車頂蓬爲例之車輛用板零件與投影面 積的關係圖。 圖8係於引擎蓋面板配置單軸配向之補強構造體（3 ) 的汽車之引擎蓋的例。S2/S1之値爲0.37、J2/J1之値爲0.44 〇 圖9係於車頂蓬面板配置單軸配向之補強構造體（3 ) 的汽車之車頂蓬的例。S2/S1之値爲0.29、J2/J1之値爲0.29 -15- 201033035 圖ι〇係於車頂蓬面板配置單軸配向之補強構造體（3 )的汽車之車頂蓬的例。S2/S1之値爲0.26、J2/J1之値爲 0.29。 (製造方法） 本發明之車輛用板零件係可藉由於樹脂成形體以同時 滿足下述式（1)及（2)之方式配置含有比彈性率5X l〇8cm以上之強化纖維的補強構造體來製造。若依本發明 之製造方法，可有效且廉價地製造輕量且扭轉剛性及彎曲 剛性優之車輛用板零件。 (提昇剛性之方法） 本發明係提昇由樹脂成形體及補強構造體所構成之車 輛用板零件的剛性之方法，其特徵在於：於樹脂成形體以 同時滿足下述式（1)及（2)之方式配置含有比彈性率5x l〇8cm以上之強化纖維的補強構造體來製造。若依本發明 之方法’藉由少量之補強構造體而可提昇車輛用板零件之 剛性。 【實施方式】 實施例 以下’藉實施例更具體地說明本發明，但本發明係不 受此任何限定。實施例中之物性係以如下之方法進行測定 -16- 201033035 (1 ) S2/S1、J2/J1 S2/S 1係從設計圖計算而求出。J2/J 1係從設計圖取得 尺寸而積分所求出。 (2 )扭轉剛性之測定 φ 如於圖11表示槪略’固定所製作之板的上部2點（圖 中10)，於下部兩端（圖中9)以支撐點（圖中n)作爲 中心，分別於上下方向賦予1 0 k g之負荷’測定變異量（ 變形長度：m m )。 (3 )彎曲剛性之測定 如於圖12表示槪略’固定所製作之面板的上部2點（ 圖中1〇)，於下部兩端（圖中9)以支撐點（圖中11)作 φ 爲中心，分別於下方向賦予1 〇 kg之負荷’測定變異量（ 變形長度：m m )。 實施例1 製作具有圖1所示之窗部的汽車之背門。 就樹脂成形體（1 )而言，以聚丙烯（（股）Prime Polymer製 Prime Polypro J105G)所形成’使用橫 1200mm 、縱1400mm之實物大的背門板。 補強構造體（3 )係配製成如圖1所示般，厚度爲3mm -17- 201033035 。補強構造體係就連續纖維而言形成碳纖維（東邦Tenax (股）製、Tenax STS40 (註冊商標）、比彈性率14x 108 cm )的一方向材，且相對於碳纖維1〇〇體積份爲尼龍6 (三菱 E n g i n e e r i n g P1 a s t i c s (股）製，N 〇 v a m i d 1 0 1 0 C 2 ) 100體積份，進行拉擠成形，使用寬l〇mm、厚lmm之板狀 者。 於樹脂成形體（1)與補強構造體（3)之邊界係使胺 基甲酸酯系彈性接著劑（Sikaflex-255 Extra、彈性率 @ 0.003 GPa)以厚2mm全面配置。 S2/S1之値爲0.4，J2/J1之値爲0.5。所製作之背門係除 去同形狀之鋼製的背門（下述比較例1)與窗部的重量比 較，達成45%之輕量化。測定所製作之背門的扭轉剛性及 彎曲剛性。結果表示於表1中。 比較例1 測定與實施例1同形狀之鋼製的背門之扭轉剛性及彎 0 曲剛性。結果表示於表1中。 比較例2 除未配置補強構造體（3)以外，其餘係測定與實施 例1相同之背門板的扭轉剛性及彎曲剛性。結果表示於表1 中。 -18- 201033035 [表1] 扭轉剛性 (變形長度、腿） 彎曲剛性 (變形長度、mm) 實施例1 11 0.7 比較例1 (鋼製） 3 0.5 比較例2 (無補強構造體） 15 2.7 從表1明顯可知’本發明之車輛用板零件係於同形狀 之鋼製板略差但具有充分的扭轉剛性及彎曲剛性。 ❿ 實施例2 除使樹脂成形體之材質形成由聚丙烯樹脂及玻璃纖維 所構成之纖維強化樹脂組成物（組成物中玻璃纖維爲20體 積％ )取代聚丙烯以外，其餘係與實施例1同樣做法，而製 作圖2所示之橫1 2〇〇mm、縱1 400mm之實物大背門。進行同 樣之剛性試驗，確認出與鋼製之面板約同等的扭轉剛性。 又’以除去同形狀之鋼製的背門（比較例1 )與窗部之重 量比較’達成4 0 %之輕量化。S 2 / S 1之値爲0.5，J 2 / J 1之値 爲 〇 · 7。 發明之效果 本發明之車輛用板零件係維持習知之樹脂製板的輕量 化同時剛性優異。又，若依本發明，可經濟性地提供樹脂 製之車輛用板零件。 【圖式簡單說明】 -19- 201033035 圖1係於實施例1所製作之後門的槪略正面圖。 圖2係於實施例2所製作之後門的槪略正面圖。 圖3係表示於後門之本發明的實施形態之槪略正面圖 〇 圖4係表示於後門之本發明的實施形態之槪略正面圖 〇 圖5係表示於後門之本發明的實施形態之槪略正面圖 〇 圖6係表示於後門之本發明的實施形態之槪略剖面圖 〇 圖7係表示舉出車頂蓬作爲車輛用板零件爲例之面板 零件與投影面積的關係圖。 圖8係表示引擎蓋之本發明的實施形態之槪略正面圖 〇 圖9係表示車頂蓬之本發明的實施形態之槪略正面圖 。 ❹ 圖1 〇係表示於側門之本發明的實施形態之槪略剖面圖 〇 圖11係扭轉剛性試驗方法之槪略圖。 圖12係彎曲剛性試驗方法的槪略圖。 【主要元件符號說明】 1 :樹脂成形體 2 :窗部 -20- 201033035 3 :補強構造體 4 :車輛用板零件 5 :投影面積 6 :外裝板 7 :彈性層 8 :內裝板 9 :荷重方向 1 〇 :固定點 1 1 :支撐點Ip = I (r2xdA) (3) (Ip is the polar moment of inertia, r is the distance between the tiny area (dA) and the centroid). In the actual calculation, the formula (3) can also be obtained by differential differentiation. In the formula (2), when J2/J1 is 0.95 or more, the S2/S1 of the formula (1) is less than 6, and the reinforcing fiber is excessively used, which is economically inferior, and J2/J1 is -13 - 201033035 0.15 or less. When S2/S1 is greater than 0.05, the rigidity of the plate parts for the vehicle is insufficient. J 2 / J 1 is preferably 0.2 to 0.9 5, more preferably 0 · 3 to 0 · 9. When the resin molded body does not contain the filler fiber, it is preferably 0.95 > J2 / J1 > 0.20 (2), and the resin molded body contains 10 to 30 parts by volume of the discontinuous twisted fiber with respect to 100 parts by volume of the resin. It is preferable that 0.90 of the vehicle component of the present invention is composed of a resin molded body and a reinforcing structure q body, but the size of the component of the design drawing or the actual molded body is obtained, and the relevant calculation is calculated. The projection surface area of each of the projection areas and the polar moment of inertia of the projection map of the present invention may also have a glass portion such as a window portion, regardless of the ratio and shape occupied by the window portion of the panel. The projected area of the panel member includes a window portion. The window portion is in a movable state to form a state in which the window is completely closed, or a state depending on the state thereof. Further, the panel member for a vehicle may be fixed to the resin molded body. A metal part, etc. At this time, the metal part protrudes from the outer side line of the vehicle panel part, and the projection area also includes the protruding part of the metal part. The confirmation of each parameter in the vehicle board part that joins the reinforcing structure For example, a method of calculating the parameters of SI, S2, J1, and J2 by dividing the vehicle plate member into a grid shape by 200 divisions in a vertical and horizontal direction and recovering the vehicle plate member and the reinforcing structure from the cross-sectional structure. Plate parts) Vertical plate parts and horizontal plate parts are used in the vehicle plate parts. Car-14- 201033035 The vertical plate parts for the vehicle are plate-shaped at an angle of 45° or more with respect to the floor of the exterior part of the vehicle. Examples of the components include, for example, a back door, a fender, a front door, a rear door, a side door, etc. The vehicle water flat plate member is a plate-shaped member disposed at an angle of less than 45° with respect to the floor of the vehicle exterior portion, for example, A hood, a roof, etc. The vehicular part for a vehicle of the present invention is preferably, for example, a back door, a side door, a hood or a roof. The preferred embodiment of the present invention is illustrated in the drawings. In the figure, 1 is a resin molding. The body, 2 is a window structure, and the stripe pattern of 3 is a reinforcing structure. The reinforcing structure is preferably formed as a uniaxial alignment structure in the form of a strip. Fig. 3 is a structure of a reinforcing structure (3) attached to the back door panel. An example of a back door of a car. S2/S1 The ratio of 0.2 and J2/J1 is 0.4. Fig. 4 shows an example of the back door of a car with a rear structure and a reinforcing structure (3). The S2/S1 is 0.3, and the J2/J1 is 0.6. It is an example of a back door in a car in which the rear door panel is provided with a reinforcing structure (3). The S2/S1 is 0.3 and the J2/J1 is 0.3. Fig. 6 is an exterior panel of the back door of the car (6) Fig. 7 is a view showing the relationship between the reinforcing member (3), the elastic layer (7), and the inner panel (8). Fig. 7 is a view showing the relationship between the panel parts of the vehicle and the projected area. 8 is an example of a hood of a car equipped with a uniaxially aligned reinforcing structure (3) on the hood panel. The S2/S1 is 0.37 and the J2/J1 is 0.44. Figure 9 is for the roof panel. An example of a roof of a car with a uniaxially aligned reinforcing structure (3). The S2/S1 is 0.29, and the J2/J1 is 0.29 -15- 201033035. Figure 〇 is an example of a car roof with a single-axis reinforced structure (3). The S of S2/S1 is 0.26, and the J of J2/J1 is 0.29. (Manufacturing Method) The reinforcing member having the reinforcing fiber having a specific modulus of elasticity of 5×10 8 or more is disposed in the resin molded body by the following formulas (1) and (2). To manufacture. According to the manufacturing method of the present invention, it is possible to efficiently and inexpensively manufacture a vehicle panel member which is lightweight and has excellent torsional rigidity and bending rigidity. (Method of Lifting Rigidity) The present invention is a method for improving the rigidity of a panel member for a vehicle comprising a resin molded body and a reinforcing structure, characterized in that the resin molded body simultaneously satisfies the following formulas (1) and (2). The reinforced structure having reinforcing fibers having an elastic modulus of 5 x l 8 cm or more is disposed to be manufactured. According to the method of the present invention, the rigidity of the panel member for a vehicle can be improved by a small number of reinforcing structures. [Embodiment] EXAMPLES Hereinafter, the present invention will be specifically described by way of Examples, but the present invention is not limited thereto. The physical properties in the examples were measured by the following method -16 - 201033035 (1) The S2/S1, J2/J1 S2/S 1 system was calculated from the design drawing. J2/J 1 is obtained by taking the dimensions from the design drawing and integrating them. (2) Measurement of torsional rigidity φ As shown in Fig. 11, the upper part of the plate made by the 'fixed' is shown as 2 points (10 in the figure), and the lower end (9 in the figure) is centered on the support point (n in the figure) A load of 10 kg was applied in the vertical direction to determine the amount of variation (deformation length: mm). (3) Measurement of bending rigidity As shown in Fig. 12, the upper part of the panel made by the 'fixed' is fixed at 2 points (1〇 in the figure), and the lower end (9 in the figure) is used as the support point (11 in the figure). For the center, the load of 1 〇kg was given in the lower direction, and the variation amount (deformation length: mm) was measured. Embodiment 1 A back door of a car having the window portion shown in Fig. 1 was produced. In the case of the resin molded article (1), a back panel having a large body of 1200 mm in width and 1400 mm in length was used to form a polypropylene (made of Prime Polypro J105G, manufactured by Prime Polymer). The reinforcing structure (3) is formulated as shown in Fig. 1 and has a thickness of 3 mm -17 to 201033035. The reinforcing structure system forms a directional material of carbon fiber (Tenbond Tenax (trademark), Tenax STS40 (registered trademark), specific modulus of elasticity 14x 108 cm) for continuous fibers, and is nylon 6 with respect to 1 part by volume of carbon fiber ( Mitsubishi E ngineering P1 astics (share), N 〇vamid 1 0 1 0 C 2 ) 100 parts by volume, pultrusion, using a plate having a width of l〇mm and a thickness of lmm. At the boundary between the resin molded body (1) and the reinforcing structure (3), a urethane-based elastic adhesive (Sikaflex-255 Extra, elastic modulus @0.003 GPa) was disposed in a total thickness of 2 mm. The 値 of S2/S1 is 0.4, and the J of J2/J1 is 0.5. The produced back door was reduced in weight by 45% in addition to the weight of the back door of the same shape (the following Comparative Example 1) and the window portion. The torsional rigidity and bending rigidity of the produced back door were measured. The results are shown in Table 1. Comparative Example 1 The torsional rigidity and the flexural rigidity of the back door made of steel having the same shape as in Example 1 were measured. The results are shown in Table 1. Comparative Example 2 The torsional rigidity and the bending rigidity of the back door panel were measured in the same manner as in Example 1 except that the reinforcing structure (3) was not disposed. The results are shown in Table 1. -18- 201033035 [Table 1] Torsional rigidity (deformation length, leg) Bending rigidity (deformation length, mm) Example 1 11 0.7 Comparative Example 1 (steel) 3 0.5 Comparative Example 2 (without reinforcing structure) 15 2.7 From As is apparent from Table 1, the panel component for a vehicle of the present invention is slightly inferior to a steel plate of the same shape but has sufficient torsional rigidity and bending rigidity. Example 2 The same procedure as in Example 1 was carried out except that the material of the resin molded body was formed by forming a fiber-reinforced resin composition (20% by volume of glass fibers in the composition) composed of a polypropylene resin and a glass fiber. In practice, a large back door with a width of 1 2 mm and a length of 1 400 mm as shown in Fig. 2 was produced. The same rigidity test was carried out to confirm that the torsional rigidity was approximately the same as that of the steel panel. Further, in order to remove the weight of the back door (Comparative Example 1) and the weight of the window portion made of steel having the same shape, a weight reduction of 40% was achieved. The 値 of S 2 / S 1 is 0.5, and the J of J 2 / J 1 is 〇 · 7. Advantageous Effects of Invention The panel member for a vehicle of the present invention is excellent in rigidity while maintaining the weight of a conventional resin sheet. Further, according to the present invention, a resin panel member for a vehicle can be provided economically. BRIEF DESCRIPTION OF THE DRAWINGS -19- 201033035 Fig. 1 is a schematic front view of a rear door produced in the first embodiment. Figure 2 is a schematic front elevational view of the door after the second embodiment. 3 is a front view showing an embodiment of the present invention in a rear door. FIG. 4 is a front view showing an embodiment of the present invention in a rear door. FIG. 5 is a view showing an embodiment of the present invention in a rear door. 6 is a schematic cross-sectional view showing an embodiment of the present invention in a rear door. FIG. 7 is a view showing a relationship between a panel member and a projected area in which a roof panel is used as a panel member for a vehicle. Fig. 8 is a schematic front view showing an embodiment of the present invention of the hood. Fig. 9 is a schematic front elevational view showing the embodiment of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic cross-sectional view showing an embodiment of the present invention in a side door. Fig. 11 is a schematic view showing a test method of torsional rigidity. Figure 12 is a schematic diagram of the bending rigidity test method. [Description of main component symbols] 1 : Resin molded body 2 : Window section -20- 201033035 3 : Reinforcing structure 4 : Vehicle panel part 5 : Projection area 6 : Outer panel 7 : Elastic layer 8 : Interior panel 9 : Load direction 1 〇: fixed point 1 1 : support point