WO2020152819A1 - Vehicular resin back door - Google Patents

Vehicular resin back door Download PDF

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Publication number
WO2020152819A1
WO2020152819A1 PCT/JP2019/002220 JP2019002220W WO2020152819A1 WO 2020152819 A1 WO2020152819 A1 WO 2020152819A1 JP 2019002220 W JP2019002220 W JP 2019002220W WO 2020152819 A1 WO2020152819 A1 WO 2020152819A1
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WO
WIPO (PCT)
Prior art keywords
inner panel
resin
back door
hinge
vehicle
Prior art date
Application number
PCT/JP2019/002220
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French (fr)
Japanese (ja)
Inventor
紀樹 染谷
克利 荒井
Original Assignee
三井化学株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 三井化学株式会社 filed Critical 三井化学株式会社
Priority to PCT/JP2019/002220 priority Critical patent/WO2020152819A1/en
Priority to JP2020567311A priority patent/JP7191126B2/en
Publication of WO2020152819A1 publication Critical patent/WO2020152819A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
    • B60J5/00—Doors
    • B60J5/10—Doors arranged at the vehicle rear
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
    • B60J5/00—Doors
    • B60J5/04—Doors arranged at the vehicle sides

Definitions

  • the present invention relates to a resin backdoor used for vehicles such as automobiles, and more particularly to a resin backdoor which is very useful in terms of weight reduction of the vehicle.
  • the body of the vehicle has been made of resin in order to reduce the weight of the vehicle such as an automobile.
  • the resin vehicle body has an advantage of being light in weight, but has a problem of relatively low strength.
  • Various studies have been made on the strength of a resin back door provided at the rear opening of the vehicle body.
  • Patent Documents 1 to 3 a pair of left and right skeleton structures including a pair of back door side portions, a pair of connecting portions, and a pair of beat portions (V-shaped skeletons) are provided in order to improve the rigidity of a resin back door. It has been proposed to configure, provide an annular bulge and a recess on the outer periphery of the backdoor hem, and provide ribs on the top, sides and hem of the backdoor. It is described that the resin back door having such a reinforcing structure does not need to be provided with a relatively heavy reinforcement, so that it is possible to effectively improve the rigidity while reducing the weight of the vehicle.
  • Patent Document 4 proposes that a recess is provided at least at the periphery of the back door inner panel, and reinforcing ribs are arranged at different angles (in a zigzag shape) there. It is described that the back door having such a reinforcing structure can improve the torsional rigidity and bending rigidity of the peripheral edge of the door inner panel.
  • the resin backdoors of Patent Documents 1 to 4 are not yet sufficient in terms of weight reduction. Specifically, the structure of these resin backdoors is mainly intended to improve the rigidity, and there is room for further improvement in terms of weight reduction. Further, the improvement in rigidity due to the configuration of these resin backdoors is not always sufficient, and as a result, it is possible to provide a sufficiently lightweight resin backdoor that can be actually used in vehicles such as automobiles. I can not say.
  • an object of the present invention is to provide a resin back door which is very useful in terms of weight reduction of a vehicle.
  • the inventors of the present invention are very effective in reducing the weight of the vehicle by specifying the configuration such as the general thickness of the inner panel of the resin back door.
  • the present invention has been completed and the present invention has been completed. That is, the present invention is specified by the following matters.
  • a resin backdoor for a vehicle which has a resin inner panel and an outer panel that are adhered to each other, and the inner panel has a general plate thickness of 2.0 mm or less.
  • a resin-made back door for a vehicle in which a hinge and a hinge reinforcement are attached to an inner panel, and is swingably connected to an upper side of a vehicle rear opening through the hinge, the attachment portion of the hinge reinforcement being provided.
  • a boss for fixing the hinge reinforcement is projectingly provided on the boss, and radial ribs are provided around the boss, and the resin backdoor for vehicle according to any one of [1] to [3]. ..
  • the boss provided with radial ribs around the boss is provided on one or both of the left corner portion and the right corner portion of the upper side of the inner panel, and the boss is provided on [4]. Resin back doors for vehicles.
  • FIG. 3 is a partial enlarged view of a right corner portion 12 on the upper side of the inner panel 10 shown in FIG. 1. It is a figure which shows the state which attached the hinge reinforcement 20 to the right corner part 12 of the upper side of the inner panel 10 shown in FIG.
  • FIG. 2 is a partially enlarged view of an intersection of a belt line and a pillar of the inner panel 10 shown in FIG. 1 (that is, a central portion 22 on the right side of FIG. 1).
  • FIG. 3 is a partial enlarged view of a right corner portion 32 on the lower side of the inner panel 10 shown in FIG. 1.
  • FIG. 1 is a partially enlarged view of a part of the outer peripheral flange of the inner panel 10 shown in FIG. 1 (that is, a part 31 of the lower side of FIG. 1), and (B) is a bead-shaped portion provided on the outer peripheral flange.
  • 16 is a schematic sectional view of 16.
  • FIG. 1 is a diagram showing an embodiment of an inner panel of a resin back door of the present invention.
  • a resin backdoor for a vehicle usually has a resin inner panel 10 and an outer panel (not shown) as shown in FIG. 1, and the backdoor is formed by bonding the two together.
  • the general thickness of the inner panel 10 is 2.0 mm or less, preferably 0.5 to 2.0 mm, and more preferably 0.5 to 1.8 mm.
  • the “general plate thickness” means the plate thickness of a general portion of the inner panel 10, that is, the plate thickness of a portion occupying most of the inner panel 10. Therefore, of the respective parts of the inner panel 10, the plate thickness of the special part which is designed to be thicker than the general part to play a special role is not called the general plate thickness.
  • the inner panel 10 when the general plate thickness is 2.0 mm or less, when the entire inner panel 10 is viewed from one side (indoor side or outdoor side) as a reference area, the inner panel 10 generally has a projected area as a whole. This is equivalent to the plate thickness of 70% or more of the projected area being 2.0 mm or less. Since the inner panel 10 has such a small general plate thickness, the inner panel 10 is remarkably lightweight, and the back door made of resin is very useful in terms of weight reduction of the vehicle.
  • hinge reinforcements for reinforcing the hinge mounting portion and its periphery.
  • a hinge is attached to the hinge attachment portion, and the back door can be swung by connecting the back door to the upper side of the vehicle rear opening through the hinge. That is, the back door thus connected is opened by swinging upward, and closed by swinging downward.
  • FIG. 2 is a partially enlarged view of the right corner portion 12 on the upper side of the inner panel 10 shown in FIG.
  • the hinge reinforcement is attached to the hinge reinforcement attachment portion 13 of the right corner portion 12.
  • the hinge reinforcement (and hinge) is usually attached by fixing parts such as bolts.
  • the hinge reinforcement mounting portion 13 has a plurality of bolt holes 14.
  • the hinge reinforcement is fixed to the right corner portion 12 of the upper side of the inner surface of the inner panel 10.
  • two of the plurality of bolt holes 14 are bosses 14a (bolt holes having a convex shape protruding from the surface of the inner panel 10) around which radial ribs 15a are provided.
  • the boss 14a shown in FIG. 2 is for fixing the hinge reinforcement like the other bolt holes 14, and is characterized in that a radial rib 15a is provided around it. Since the inner panel 10 has such a configuration, the force applied to the side wall of the back door is transmitted to the boss 14a via the radial ribs 15a and further to the hinge reinforce via the bosses 14a and the radial ribs 15a. As a result, torsional deformation of the hinge attachment portion and its periphery is suppressed.
  • the hinge reinforcement known as a reinforcement member for reinforcing the hinge attachment portion and its periphery, the boss for fixing the hinge reinforcement, and the boss provided around the boss are provided.
  • the interaction with the radial ribs significantly improves the torsional rigidity of the backdoor. Therefore, such a reinforcing structure is very effective for the inner panel 10 having a general plate thickness of 2.0 mm or less.
  • bosses 14a provided with the radial ribs 15a
  • the present invention is not limited to this.
  • the number of the bosses 14a provided with the radial ribs 15a may be one, or may be three or more.
  • all the bolt holes 14 may be bosses 14a provided with such radial ribs 15a.
  • the radial ribs 15a are composed of a plurality of ribs each extending outwardly around the boss 14a.
  • the number of ribs extending outward and the specific rib shape are not particularly limited. The number of ribs and the rib shape may be such that the force applied to a predetermined position such as the side wall of the back door can be transmitted to the boss 14a at the center thereof.
  • radial ribs 15a may be provided around one or more of the boss-shaped bolt holes, or radial ribs may be provided around all the boss-shaped bolt holes. 15a may be provided.
  • the bosses 14a provided with the radial ribs 15a are preferably provided on the hinge reinforce attachment portions 13 of both the left corner portion 11 and the right corner portion 12 of the upper side of the inner panel 10, but only on one of them. I don't mind.
  • two ribs 15 are further provided on the lateral sides and below the lateral sides of the two bosses 14a provided with the radial ribs 15a. Further, one rib 15 is further provided between the two bosses 14a. These ribs 15 are effective in improving torsional rigidity (and molding dimensional accuracy in some cases). Therefore, the addition of such ribs 15 is very effective for the inner panel 10 having a general plate thickness of 2.0 mm or less.
  • the bosses 14a, the radial ribs 15a, and the ribs 15 are preferably integrally molded parts that are simultaneously molded when the inner panel 10 is molded, from the viewpoint of ease of manufacturing.
  • the material forming the bosses 14a, the radial ribs 15a, and the ribs 15 is necessarily the same resin as the resin material forming the inner panel 10.
  • the present invention is not limited to this.
  • the boss 14a, the radial ribs 15a, and the ribs 15 may be processed and formed after molding the resin back door, or may be newly attached as a separate component.
  • FIG. 3 is a view showing a state in which the hinge reinforcement 20 is attached to the right corner portion 12 of the upper side of the inner panel 10 shown in FIG. In the back door having the hinge reinforcement 20 attached in this manner, the torsional rigidity of the back door is significantly improved.
  • the material forming the hinge reinforce 20 is not particularly limited. However, a metal hinge reinforce is preferable from the viewpoint of strength characteristics such as torsional rigidity.
  • the specific size and shape of the hinge reinforcement 20 are not particularly limited. Known hinge reinforcements of various sizes and shapes can be used depending on the type of backdoor. Further, the position and the number of the bosses 14a provided with the radial ribs 15 described above may be appropriately determined according to the specific size and shape of the hinge reinforcement 20.
  • FIG. 4 is a partially enlarged view of the intersection of the belt line and the pillar of the inner panel 10 shown in FIG. 1 (that is, the central portion 22 on the right side of FIG. 1).
  • a plurality of ribs 15 are also provided at the intersections of the belt lines and pillars of the inner panel 10. These ribs 15 are effective in improving torsional rigidity (and molding dimensional accuracy in some cases). Therefore, the addition of such ribs 15 is also very effective for the inner panel 10 having a general plate thickness of 2.0 mm or less.
  • the ribs 15 as shown in FIG. 4 are preferably provided on both the belt line of the inner panel 10 and the left and right intersecting portions of the pillars (that is, the central portion 22 on the right side and the central portion 21 on the left side in FIG. 1). However, it may be provided on only one of them. It is preferable that the rib 15 as shown in FIG. 4 is also an integrally formed part that is formed at the same time when the inner panel 10 is formed, from the viewpoint of ease of manufacturing. In that case, the material forming the rib 15 is the inner panel. It is the same resin as the resin material forming 10. However, the present invention is not limited to this.
  • FIG. 5 is a partially enlarged view of the right corner portion 32 on the lower side of the inner panel 10 shown in FIG.
  • the right corner 32 is also provided with a plurality of ribs 15. These ribs 15 are also effective in improving the torsional rigidity (and molding dimensional accuracy in some cases). Therefore, the addition of such ribs 15 is also very effective for the inner panel 10 having a general plate thickness of 2.0 mm or less.
  • the rib 15 as shown in FIG. 5 is also preferably provided on both the left corner portion 31 and the right corner portion 32 of the lower side, but it may be provided on only one of them. Further, the rib 15 as shown in FIG. 5 is also preferably an integrally formed part that is formed at the same time when the inner panel 10 is formed, from the viewpoint of ease of manufacturing. In that case, the material forming the rib 15 is the inner panel. It is the same resin as the resin material forming 10. However, the present invention is not limited to this.
  • FIG. 6A is a partially enlarged view of a part of the outer peripheral flange (that is, a part 41 of the lower side of FIG. 1) of the inner panel 10 shown in FIG. 1, and FIG. It is a schematic cross section of the formed bead shape part 16.
  • the outer peripheral flange of the inner panel 10 is provided with bead-shaped portions 16 at two locations.
  • the lower bead-shaped portion 16 is provided at the lower end of the outer peripheral flange of the inner panel 10 (the outer peripheral end when viewed from the inner panel 10 as a whole), and the upper bead-shaped portion 16 is the inner panel.
  • the lower bead shape portion 16 has a larger bead shape than the upper bead shape portion 16.
  • a plurality of ribs 15 are uniformly provided on the lower side of the inner panel 10.
  • the inner panel 10 is an injection molded body, it is preferable to provide a rib on the lower side.
  • the bead-shaped portion 16 and the rib 15 are effective in improving the molding dimensional accuracy. Therefore, the addition of such bead shape portions 16 and ribs 15 is also very effective for the inner panel 10 having a general plate thickness of 2.0 mm or less.
  • the bead-shaped portion 16 as shown in FIG. 6 is preferably provided on the entire outer peripheral flange (that is, the upper and lower sides and the left and right sides of the outer peripheral flange), but may be provided on only a part thereof. Further, the bead-shaped portion 16 is preferably provided at two places as shown in FIG. 6, but may be provided at only one place, or may be provided at three or more places. The bead-shaped portion 16 may have any size, and may have different sizes as shown in FIG. 6 or the same size.
  • the rib 15 as shown in FIG. 6 is preferably provided uniformly on the entire lower side of the inner panel 10, but may be provided only on a part of the lower side.
  • the bead shape portion 16 and the rib 15 as shown in FIG. 6 are integrally formed at the same time when the inner panel 10 is formed, from the viewpoint of ease of production.
  • the bead shape The material forming the ribs 15 of the portion 16 is the same as the resin material forming the inner panel 10.
  • the present invention is not limited to this.
  • the type of resin forming the inner panel is not particularly limited, and various known resins can be used.
  • preferable resins include polyolefin resins such as propylene resins and ethylene resins, unsaturated polyester resins, and amide resins.
  • a resin containing short and long fibers such as glass fiber and carbon fiber may be used.
  • a fiber-reinforced resin composition containing fibers is preferable.
  • the molding method include an injection molding method and an SMC molding method using SMC (sheet molding compound).
  • the inner panel in the present invention is preferably an injection molded product obtained by using the fiber reinforced resin composition or an SMC molded product obtained by using a sheet molding compound.
  • the suitable range of general plate thickness differs depending on the type of inner panel.
  • its general plate thickness is 2.0 mm or less, preferably 0.5 to 2.0 mm, and more preferably 0. It is 0.5 to 1.8 mm.
  • the general plate thickness thereof is 2.0 mm or less, preferably 1.8 mm or less, more preferably 0.5 to It is 1.8 mm, particularly preferably 0.5 to 1.6 mm, most preferably 0.5 to 1.4 mm.
  • the vehicle-made resin back door of the present invention is useful in terms of weight reduction of the vehicle, and is particularly useful in that it can be actually used in vehicles such as automobiles.

Abstract

Disclosed is a vehicular resin back door that is very useful in terms of weight reduction of a vehicle and that has a resin inner panel and a resin outer panel which are attached to each other, wherein the general plate thickness of the inner panel is no more than 2.0 mm. In this vehicular resin back door, a hinge and a hinge reinforcement are attached to the inner panel, and the vehicular resin back door is swingably connected to the upper side of a vehicle rear part opening via the hinge. It is desirable that on an attachment part 12 of the hinge reinforcement, a boss 14a for fixing the hinge reinforcement protrude, and radial ribs 15a be provided around the boss 14a.

Description

車両用樹脂製バックドアResin back door for vehicle
　本発明は、自動車等の車両に用いる樹脂製バックドアに関し、より詳しくは車両の軽量化の点で非常に有用な樹脂製バックドアに関する。 The present invention relates to a resin backdoor used for vehicles such as automobiles, and more particularly to a resin backdoor which is very useful in terms of weight reduction of the vehicle.
　近年、自動車等の車両の軽量化を目的として、その車体の樹脂化が進んでいる。ただし従来の金属製車体に比べて、樹脂製車体は軽量であるという利点を有するが、強度が比較的低いという問題がある。車体の後部開口に設けられる樹脂製バックドアについても、その強度に関する様々な検討が為されている。 In recent years, the body of the vehicle has been made of resin in order to reduce the weight of the vehicle such as an automobile. However, compared with the conventional metal vehicle body, the resin vehicle body has an advantage of being light in weight, but has a problem of relatively low strength. Various studies have been made on the strength of a resin back door provided at the rear opening of the vehicle body.
　特許文献１～３では、樹脂製バックドアの剛性を向上させる為に、一対のバックドア側部と、一対の連結部と、一対のビート部（Ｖ字骨格）を含む左右一対の骨格構造を構成すること、バックドア裾部の外周に環状膨出部と凹入部を設けること、並びに、バックドアの上部、側部及び裾部にリブを設けることが提案されている。そして、このような補強構造を有する樹脂製バックドアは、比較的重いリインフォースを設ける必要がないので、車両の軽量化を図りつつ、効果的に剛性を向上できると説明されている。 In Patent Documents 1 to 3, a pair of left and right skeleton structures including a pair of back door side portions, a pair of connecting portions, and a pair of beat portions (V-shaped skeletons) are provided in order to improve the rigidity of a resin back door. It has been proposed to configure, provide an annular bulge and a recess on the outer periphery of the backdoor hem, and provide ribs on the top, sides and hem of the backdoor. It is described that the resin back door having such a reinforcing structure does not need to be provided with a relatively heavy reinforcement, so that it is possible to effectively improve the rigidity while reducing the weight of the vehicle.
　特許文献４では、バックドアインナーパネルの少なくとも周縁に凹部を設け、そこに異なる角度で（ジグザグ状に）補強リブを配置することが提案されている。そして、このような補強構造を有するバックドアは、ドアインナパネルの周縁のねじれ剛性及び曲げ剛性を向上できると説明されている。 Patent Document 4 proposes that a recess is provided at least at the periphery of the back door inner panel, and reinforcing ribs are arranged at different angles (in a zigzag shape) there. It is described that the back door having such a reinforcing structure can improve the torsional rigidity and bending rigidity of the peripheral edge of the door inner panel.
特開２０１８－０１２５００号公報JP, 2008-012500, A 特開２０１８－０１２５０２号公報Japanese Patent Laid-Open No. 2018-012502 特開２０１８－１５８７０４号公報Japanese Patent Laid-Open No. 2018-158704 特開２０１６－１０７６５３号公報JP, 2016-107653, A
　しかし特許文献１～４の樹脂製バックドアは、軽量化の点においてはまだ十分とは言えない。具体的には、これら樹脂製バックドアの構成は剛性の改善を主たる目的とするものであり、軽量化の点においてはさらなる改善の余地があると考えられる。また、これら樹脂製バックドアの構成による剛性の改善は必ずしも十分ではなく、その結果として、自動車等の車両に実際に使用可能な十分に軽量化された樹脂製バックドアを提供できているとは言えない。 However, the resin backdoors of Patent Documents 1 to 4 are not yet sufficient in terms of weight reduction. Specifically, the structure of these resin backdoors is mainly intended to improve the rigidity, and there is room for further improvement in terms of weight reduction. Further, the improvement in rigidity due to the configuration of these resin backdoors is not always sufficient, and as a result, it is possible to provide a sufficiently lightweight resin backdoor that can be actually used in vehicles such as automobiles. I can not say.
　すなわち、本発明の目的は、車両の軽量化の点で非常に有用な樹脂製バックドアを提供することにある。 That is, an object of the present invention is to provide a resin back door which is very useful in terms of weight reduction of a vehicle.
　本発明者らは、上記課題を解決するために鋭意検討を重ねた結果、樹脂製バックドアのインナーパネルの一般板厚などの構成を特定することによって車両の軽量化を図ることが非常に効果的であることを見出し、本発明を完成するに至った。すなわち、本発明は以下の事項により特定される。 As a result of intensive studies to solve the above-mentioned problems, the inventors of the present invention are very effective in reducing the weight of the vehicle by specifying the configuration such as the general thickness of the inner panel of the resin back door. The present invention has been completed and the present invention has been completed. That is, the present invention is specified by the following matters.
［１］互いに接着される樹脂製のインナーパネルと、アウターパネルとを有し、前記インナーパネルの一般板厚が２.０ｍｍ以下である車両用樹脂製バックドア。 [1] A resin backdoor for a vehicle, which has a resin inner panel and an outer panel that are adhered to each other, and the inner panel has a general plate thickness of 2.0 mm or less.
［２］インナーパネルが、繊維強化樹脂組成物を用いて得られた射出成形体である［１］に記載の車両用樹脂製バックドア。 [2] The resin backdoor for vehicle according to [1], wherein the inner panel is an injection-molded product obtained by using the fiber-reinforced resin composition.
［３］インナーパネルが、シートモールディングコンパウンドを用いて得られたＳＭＣ成形体であり、一般板厚が１.８ｍｍ以下である［１］に記載の車両用樹脂製バックドア。 [3] The vehicle backdoor according to [1], wherein the inner panel is an SMC molded product obtained by using a sheet molding compound, and has a general plate thickness of 1.8 mm or less.
［４］インナーパネルにヒンジ及びヒンジリンフォースが取付けられ、車両後部開口の上辺に前記ヒンジを介して揺動可能に連結される車両用樹脂製バックドアであって、前記ヒンジリンフォースの取付部には、前記ヒンジリンフォースを固定する為のボスが突設され、前記ボスの周囲には放射状リブが設けられている［１］～［３］のいずれかに記載の車両用樹脂製バックドア。 [4] A resin-made back door for a vehicle, in which a hinge and a hinge reinforcement are attached to an inner panel, and is swingably connected to an upper side of a vehicle rear opening through the hinge, the attachment portion of the hinge reinforcement being provided. A boss for fixing the hinge reinforcement is projectingly provided on the boss, and radial ribs are provided around the boss, and the resin backdoor for vehicle according to any one of [1] to [3]. ..
［５］周囲に放射状リブが設けられているボスが、インナーパネルの上辺の左コーナー部及び右コーナー部のうちの一方又は両方のヒンジリンフォースの取付部に設けられている［４］に記載の車両用樹脂製バックドア。 [5] The boss provided with radial ribs around the boss is provided on one or both of the left corner portion and the right corner portion of the upper side of the inner panel, and the boss is provided on [4]. Resin back doors for vehicles.
［６］ボス及び放射状リブが、インナーパネルの成形時に同時成形された一体成形部である［４］に記載の車両用樹脂製バックドア。 [6] The vehicle resin back door according to [4], wherein the boss and the radial rib are an integrally molded portion that is simultaneously molded when the inner panel is molded.
［７］インナーパネルのベルトラインとピラーの交差部にリブが設けられている［１］～［３］のいずれかに記載の車両用樹脂製バックドア。 [7] The resin backdoor for vehicle according to any one of [1] to [3], wherein ribs are provided at intersections of the belt lines and the pillars of the inner panel.
［８］インナーパネルの下辺の左コーナー部及び右コーナー部のうちの一方又は両方にリブが設けられている［１］～［３］のいずれかに記載の車両用樹脂製バックドア。 [8] The vehicle back door according to any one of [1] to [3], wherein a rib is provided on one or both of the left corner and the right corner of the lower side of the inner panel.
［９］インナーパネルの外周フランジに玉縁形状部が設けられている［１］～［３］のいずれかに記載の車両用樹脂製バックドア。 [9] The vehicle back door according to any one of [1] to [3], wherein a bead-shaped portion is provided on the outer peripheral flange of the inner panel.
［１０］インナーパネルの下部にリブが設けられている［２］に記載の車両用樹脂製バックドア。 [10] The vehicle-made resin back door according to [2], wherein a rib is provided on a lower portion of the inner panel.
　本発明によれば、車両の軽量化の点で非常に有用な樹脂製バックドアを提供できる。 According to the present invention, it is possible to provide a resin back door which is very useful in terms of weight reduction of the vehicle.
本発明の樹脂製バックドアのインナーパネルの一実施形態を示す図である。It is a figure which shows one Embodiment of the inner panel of the resin backdoor of this invention. 図１に示したインナーパネル１０の上辺の右コーナー部１２の部分拡大図である。FIG. 3 is a partial enlarged view of a right corner portion 12 on the upper side of the inner panel 10 shown in FIG. 1. 図２に示したインナーパネル１０の上辺の右コーナー部１２に、ヒンジリンフォース２０を取付けた状態を示す図である。It is a figure which shows the state which attached the hinge reinforcement 20 to the right corner part 12 of the upper side of the inner panel 10 shown in FIG. 図１に示したインナーパネル１０のベルトラインとピラーの交差部（すなわち図１の右側辺の中央部２２）の部分拡大図である。FIG. 2 is a partially enlarged view of an intersection of a belt line and a pillar of the inner panel 10 shown in FIG. 1 (that is, a central portion 22 on the right side of FIG. 1). 図１に示したインナーパネル１０の下辺の右コーナー部３２の部分拡大図である。FIG. 3 is a partial enlarged view of a right corner portion 32 on the lower side of the inner panel 10 shown in FIG. 1. （Ａ）は図１に示したインナーパネル１０の外周フランジの一部（すなわち図１の下辺の一部３１）の部分拡大図であり、（Ｂ）は外周フランジに設けられた玉縁形状部１６の模式的断面図である。(A) is a partially enlarged view of a part of the outer peripheral flange of the inner panel 10 shown in FIG. 1 (that is, a part 31 of the lower side of FIG. 1), and (B) is a bead-shaped portion provided on the outer peripheral flange. 16 is a schematic sectional view of 16. FIG.
　図１は、本発明の樹脂製バックドアのインナーパネルの一実施形態を示す図である。車両用樹脂製バックドアは、通常、図１に示すような樹脂製のインナーパネル１０及びアウターパネル（不図示）を有し、両者が互いに接着されることによりバックドアが構成される。 FIG. 1 is a diagram showing an embodiment of an inner panel of a resin back door of the present invention. A resin backdoor for a vehicle usually has a resin inner panel 10 and an outer panel (not shown) as shown in FIG. 1, and the backdoor is formed by bonding the two together.
　本発明において、インナーパネル１０の一般板厚は２.０ｍｍ以下であり、好ましくは０.５～２.０ｍｍ、より好ましくは０.５～１.８ｍｍである。 In the present invention, the general thickness of the inner panel 10 is 2.0 mm or less, preferably 0.5 to 2.0 mm, and more preferably 0.5 to 1.8 mm.
　本発明において「一般板厚」とは、インナーパネル１０の一般的な部分の板厚、すなわちインナーパネル１０の大部分を占める箇所の板厚を意味する。したがって、インナーパネル１０の各部分のうち、特別な役割を担う為に一般的な部分よりも厚く設計されている特別な部分の板厚は、一般板厚とは言わない。この厚く設計されている特別な部分としては、例えば、リブやボス等の補強用突起部又はボルト用突起部、ヒンジ取付部やコーナー部等の部分の剛性を向上させる為に一般的な部分よりも厚く設計されている部分、成形寸法精度を向上させる為の玉縁形状部が挙げられる。 In the present invention, the “general plate thickness” means the plate thickness of a general portion of the inner panel 10, that is, the plate thickness of a portion occupying most of the inner panel 10. Therefore, of the respective parts of the inner panel 10, the plate thickness of the special part which is designed to be thicker than the general part to play a special role is not called the general plate thickness. The special portion designed to be thicker than, for example, a general portion in order to improve the rigidity of the ribs, bosses, or other reinforcing protrusions or bolt protrusions, hinge mounting portions, or corners. Examples include thickly designed portions and bead-shaped portions for improving molding dimensional accuracy.
　本発明において、一般板厚が２.０ｍｍ以下であることは、インナーパネル１０全体を片側（室内側又は室外側）から見た場合の投影面積を基準にすると、通常、そのインナーパネル１０全体の投影面積の７０％以上の部分の板厚が２.０ｍｍ以下であることと同等である。そして、インナーパネル１０の一般板厚がこのように薄いことによりインナーパネル１０が著しく軽量となり、車両の軽量化の点で非常に有用な樹脂製バックドアとなる。 In the present invention, when the general plate thickness is 2.0 mm or less, when the entire inner panel 10 is viewed from one side (indoor side or outdoor side) as a reference area, the inner panel 10 generally has a projected area as a whole. This is equivalent to the plate thickness of 70% or more of the projected area being 2.0 mm or less. Since the inner panel 10 has such a small general plate thickness, the inner panel 10 is remarkably lightweight, and the back door made of resin is very useful in terms of weight reduction of the vehicle.
　図１に示す実施形態において、インナーパネル１０の室内側（背面側）の面の上辺の左コーナー部１１及び右コーナー部１２には、ヒンジ取付部及びその周辺を補強する為のヒンジリンフォースが取付けられる。ヒンジ取付部にはヒンジが取付けられ、このヒンジを介してバックドアを車両後部開口の上辺に連結することによってバックドアが揺動可能になる。すなわち、このように連結されたバックドアは、上側に揺動させることにより開き、下側に揺動させることにより閉じる。 In the embodiment shown in FIG. 1, at the left corner portion 11 and the right corner portion 12 on the upper side of the indoor side (back side) of the inner panel 10, there are hinge reinforcements for reinforcing the hinge mounting portion and its periphery. Mounted. A hinge is attached to the hinge attachment portion, and the back door can be swung by connecting the back door to the upper side of the vehicle rear opening through the hinge. That is, the back door thus connected is opened by swinging upward, and closed by swinging downward.
　図２は、図１に示したインナーパネル１０の上辺の右コーナー部１２の部分拡大図である。この右コーナー部１２のヒンジリンフォースの取付部１３に、ヒンジリンフォースが取り付けられる。ヒンジリンフォース（及びヒンジ）は、通常、ボルト等の固定部品により取り付けられる。 2 is a partially enlarged view of the right corner portion 12 on the upper side of the inner panel 10 shown in FIG. The hinge reinforcement is attached to the hinge reinforcement attachment portion 13 of the right corner portion 12. The hinge reinforcement (and hinge) is usually attached by fixing parts such as bolts.
　図２に示す実施形態においては、ヒンジリンフォースの取付部１３に複数のボルト穴１４を有する。この複数のボルト穴１４にボルトを螺入することによって、ヒンジリンフォースがインナーパネル１０の室内側の面の上辺の右コーナー部１２に固定される。そして、この実施形態においては、複数のボルト穴１４うちの２つが、周囲に放射状リブ１５ａが設けられているボス１４ａ（インナーパネル１０の表面から隆起した凸形状を有するボルト穴）である。 In the embodiment shown in FIG. 2, the hinge reinforcement mounting portion 13 has a plurality of bolt holes 14. By screwing bolts into the plurality of bolt holes 14, the hinge reinforcement is fixed to the right corner portion 12 of the upper side of the inner surface of the inner panel 10. Further, in this embodiment, two of the plurality of bolt holes 14 are bosses 14a (bolt holes having a convex shape protruding from the surface of the inner panel 10) around which radial ribs 15a are provided.
　図２に示すボス１４ａは、他のボルト穴１４と同様にヒンジリンフォースを固定する為のものであると共に、その周囲に放射状リブ１５ａが設けられている点に特徴がある。インナーパネル１０がこのような構成を有するので、バックドアの側壁にかかった力は放射状リブ１５ａを介してボス１４ａに伝わり、さらにボス１４ａ及び放射状リブ１５ａを介してヒンジリンフォースに伝えられる。その結果、ヒンジ取付部及びその周辺のねじれ変形が抑制される。 The boss 14a shown in FIG. 2 is for fixing the hinge reinforcement like the other bolt holes 14, and is characterized in that a radial rib 15a is provided around it. Since the inner panel 10 has such a configuration, the force applied to the side wall of the back door is transmitted to the boss 14a via the radial ribs 15a and further to the hinge reinforce via the bosses 14a and the radial ribs 15a. As a result, torsional deformation of the hinge attachment portion and its periphery is suppressed.
　以上の補強構造によれば、ヒンジ取付部及びその周辺を補強する為の補強部材として知られているヒンジリンフォースと、このヒンジリンフォースを固定する為のボスと、このボスの周囲に設けられる放射状リブとが相互に作用することによって、バックドアのねじれ剛性が顕著に向上する。したがってこのような補強構造は、一般板厚が２.０ｍｍ以下であるインナーパネル１０に対して非常に有効である。 According to the above reinforcement structure, the hinge reinforcement known as a reinforcement member for reinforcing the hinge attachment portion and its periphery, the boss for fixing the hinge reinforcement, and the boss provided around the boss are provided. The interaction with the radial ribs significantly improves the torsional rigidity of the backdoor. Therefore, such a reinforcing structure is very effective for the inner panel 10 having a general plate thickness of 2.0 mm or less.
　図２に示す実施形態においては、放射状リブ１５ａが設けられているボス１４ａは２つであるが、本発明はこれに限定されない。例えば、放射状リブ１５ａが設けられているボス１４ａの数は１つでも良いし、３つ以上でも良い。また、ボルト穴１４の全てがそのような放射状リブ１５ａが設けられているボス１４ａであっても構わない。 In the embodiment shown in FIG. 2, there are two bosses 14a provided with the radial ribs 15a, but the present invention is not limited to this. For example, the number of the bosses 14a provided with the radial ribs 15a may be one, or may be three or more. Further, all the bolt holes 14 may be bosses 14a provided with such radial ribs 15a.
　放射状リブ１５ａは、図２に示すように、ボス１４ａを中心として各々外側に伸び出た複数のリブからなる。本発明において、この外側に伸び出たリブの数や具体的なリブ形状は特に限定されない。バックドアの側壁などの所定位置にかかった力を、その中心にあるボス１４ａに伝えることが可能なリブの数やリブ形状であれば良い。また、ボス形状のボルト穴が複数ある場合、そのうち１つ又は２つ以上のボス形状のボルト穴の周囲に放射状リブ１５ａを設けても良いし、全てのボス形状のボルト穴の周囲に放射状リブ１５ａを設けても良い。 As shown in FIG. 2, the radial ribs 15a are composed of a plurality of ribs each extending outwardly around the boss 14a. In the present invention, the number of ribs extending outward and the specific rib shape are not particularly limited. The number of ribs and the rib shape may be such that the force applied to a predetermined position such as the side wall of the back door can be transmitted to the boss 14a at the center thereof. When there are a plurality of boss-shaped bolt holes, radial ribs 15a may be provided around one or more of the boss-shaped bolt holes, or radial ribs may be provided around all the boss-shaped bolt holes. 15a may be provided.
　放射状リブ１５ａが設けられているボス１４ａは、インナーパネル１０の上辺の左コーナー部１１及び右コーナー部１２の両方のヒンジリンフォースの取付部１３に設けることが好ましいが、その一方のみに設けても構わない。 The bosses 14a provided with the radial ribs 15a are preferably provided on the hinge reinforce attachment portions 13 of both the left corner portion 11 and the right corner portion 12 of the upper side of the inner panel 10, but only on one of them. I don't mind.
　図２に示す実施形態においては、放射状リブ１５ａが設けられている２つのボス１４ａの上辺横及び側辺下に、各々２つのリブ１５がさらに設けられている。また、２つのボス１４ａの間にも、１つのリブ１５がさらに設けられている。これらリブ１５は、ねじれ剛性（及び場合によっては成形寸法精度）の向上に効果的である。したがってこのようなリブ１５を追加することは、一般板厚が２.０ｍｍ以下であるインナーパネル１０に対して非常に有効である。 In the embodiment shown in FIG. 2, two ribs 15 are further provided on the lateral sides and below the lateral sides of the two bosses 14a provided with the radial ribs 15a. Further, one rib 15 is further provided between the two bosses 14a. These ribs 15 are effective in improving torsional rigidity (and molding dimensional accuracy in some cases). Therefore, the addition of such ribs 15 is very effective for the inner panel 10 having a general plate thickness of 2.0 mm or less.
　ボス１４ａ、放射状リブ１５ａ及びリブ１５は、インナーパネル１０の成形時に同時成形された一体成形部であることが、製造の容易性の点から好ましい。その場合、ボス１４ａ、放射状リブ１５ａ及びリブ１５を構成する材料は、必然的に、インナーパネル１０を構成する樹脂材料と同じ樹脂になる。ただし、本発明はこれに限定されない。例えば樹脂製バックドアの成形後に、ボス１４ａ、放射状リブ１５ａ及びリブ１５を加工して形成しても構わないし、別部品として新たに取付けても構わない。 The bosses 14a, the radial ribs 15a, and the ribs 15 are preferably integrally molded parts that are simultaneously molded when the inner panel 10 is molded, from the viewpoint of ease of manufacturing. In that case, the material forming the bosses 14a, the radial ribs 15a, and the ribs 15 is necessarily the same resin as the resin material forming the inner panel 10. However, the present invention is not limited to this. For example, the boss 14a, the radial ribs 15a, and the ribs 15 may be processed and formed after molding the resin back door, or may be newly attached as a separate component.
　図３は、図２に示したインナーパネル１０の上辺の右コーナー部１２に、ヒンジリンフォース２０を取付けた状態を示す図である。このようにヒンジリンフォース２０を取り付けたバックドアは、バックドアのねじれ剛性が顕著に向上する。 FIG. 3 is a view showing a state in which the hinge reinforcement 20 is attached to the right corner portion 12 of the upper side of the inner panel 10 shown in FIG. In the back door having the hinge reinforcement 20 attached in this manner, the torsional rigidity of the back door is significantly improved.
　ヒンジリンフォース２０を構成する材料は特に限定されない。ただし、ねじれ剛性等の強度特性の点から金属製のヒンジリンフォースが好ましい。ヒンジリンフォース２０の具体的なサイズや形状も特に限定されない。バックドアの種類に応じて様々なサイズや形状の公知のヒンジリンフォースを使用できる。また、先に説明した放射状リブ１５が設けられているボス１４ａの位置や数は、このヒンジリンフォース２０の具体的なサイズや形状に応じて適宜決定すれば良い。 The material forming the hinge reinforce 20 is not particularly limited. However, a metal hinge reinforce is preferable from the viewpoint of strength characteristics such as torsional rigidity. The specific size and shape of the hinge reinforcement 20 are not particularly limited. Known hinge reinforcements of various sizes and shapes can be used depending on the type of backdoor. Further, the position and the number of the bosses 14a provided with the radial ribs 15 described above may be appropriately determined according to the specific size and shape of the hinge reinforcement 20.
　図４は、図１に示したインナーパネル１０のベルトラインとピラーの交差部（すなわち図１の右側辺の中央部２２）の部分拡大図である。この図４に示すように、インナーパネル１０のベルトラインとピラーの交差部にも複数のリブ１５が設けられている。これらリブ１５は、ねじれ剛性（及び場合によっては成形寸法精度）の向上に効果的である。したがってこのようなリブ１５を追加することもまた、一般板厚が２.０ｍｍ以下であるインナーパネル１０に対して非常に有効である。 FIG. 4 is a partially enlarged view of the intersection of the belt line and the pillar of the inner panel 10 shown in FIG. 1 (that is, the central portion 22 on the right side of FIG. 1). As shown in FIG. 4, a plurality of ribs 15 are also provided at the intersections of the belt lines and pillars of the inner panel 10. These ribs 15 are effective in improving torsional rigidity (and molding dimensional accuracy in some cases). Therefore, the addition of such ribs 15 is also very effective for the inner panel 10 having a general plate thickness of 2.0 mm or less.
　図４に示すようなリブ１５は、インナーパネル１０のベルトラインとピラーの左右の交差部の両方（すなわち図１の右側辺の中央部２２及び左側辺の中央部２１）に設けることが好ましいが、その一方のみに設けても構わない。また図４に示すようなリブ１５も、インナーパネル１０の成形時に同時成形された一体成形部であることが、製造の容易性の点から好ましく、その場合のリブ１５を構成する材料はインナーパネル１０を構成する樹脂材料と同じ樹脂になる。ただし、本発明はこれに限定されない。 The ribs 15 as shown in FIG. 4 are preferably provided on both the belt line of the inner panel 10 and the left and right intersecting portions of the pillars (that is, the central portion 22 on the right side and the central portion 21 on the left side in FIG. 1). However, it may be provided on only one of them. It is preferable that the rib 15 as shown in FIG. 4 is also an integrally formed part that is formed at the same time when the inner panel 10 is formed, from the viewpoint of ease of manufacturing. In that case, the material forming the rib 15 is the inner panel. It is the same resin as the resin material forming 10. However, the present invention is not limited to this.
　図５は、図１に示したインナーパネル１０の下辺の右コーナー部３２の部分拡大図である。この右コーナー部３２にも、複数のリブ１５が設けられている。これらリブ１５も、ねじれ剛性（及び場合によっては成形寸法精度）の向上に効果的である。したがってこのようなリブ１５を追加することもまた、一般板厚が２.０ｍｍ以下であるインナーパネル１０に対して非常に有効である。 FIG. 5 is a partially enlarged view of the right corner portion 32 on the lower side of the inner panel 10 shown in FIG. The right corner 32 is also provided with a plurality of ribs 15. These ribs 15 are also effective in improving the torsional rigidity (and molding dimensional accuracy in some cases). Therefore, the addition of such ribs 15 is also very effective for the inner panel 10 having a general plate thickness of 2.0 mm or less.
　図５に示すようなリブ１５も、下辺の左コーナー部３１及び右コーナー部３２の両方に設けることが好ましいが、その一方のみに設けても構わない。また図５に示すようなリブ１５も、インナーパネル１０の成形時に同時成形された一体成形部であることが、製造の容易性の点から好ましく、その場合のリブ１５を構成する材料はインナーパネル１０を構成する樹脂材料と同じ樹脂になる。ただし、本発明はこれに限定されない。 The rib 15 as shown in FIG. 5 is also preferably provided on both the left corner portion 31 and the right corner portion 32 of the lower side, but it may be provided on only one of them. Further, the rib 15 as shown in FIG. 5 is also preferably an integrally formed part that is formed at the same time when the inner panel 10 is formed, from the viewpoint of ease of manufacturing. In that case, the material forming the rib 15 is the inner panel. It is the same resin as the resin material forming 10. However, the present invention is not limited to this.
　図６（Ａ）は、図１に示したインナーパネル１０の外周フランジの一部（すなわち図１の下辺の一部４１）の部分拡大図であり、図６（Ｂ）は、外周フランジに設けられた玉縁形状部１６の模式的断面図である。この図６（Ａ）及び（Ｂ）に示すように、インナーパネル１０の外周フランジには玉縁形状部１６が２箇所に設けられている。図６（Ｂ）においては、下側の玉縁形状部１６はインナーパネル１０の外周フランジの下端（インナーパネル１０全体から見ると外周端）に設けられ、上側の玉縁形状部１６はインナーパネル１０の外周フランジの角部の下（インナーパネル１０全体から見ると外周端の玉縁形状部よりも内側）に設けられている。下側の玉縁形状部１６は上側の玉縁形状部１６よりも大きな玉縁形状になっている。また同時に、インナーパネル１０の下辺には複数のリブ１５が一様に設けられていることが好ましい。とくにインナーパネル１０が射出成形体である場合に、下辺にリブを設けることが好ましい。これら玉縁形状部１６及びリブ１５は、成形寸法精度の向上に効果的である。したがってこのような玉縁形状部１６及びリブ１５を追加することもまた、一般板厚が２.０ｍｍ以下であるインナーパネル１０に対して非常に有効である。 6A is a partially enlarged view of a part of the outer peripheral flange (that is, a part 41 of the lower side of FIG. 1) of the inner panel 10 shown in FIG. 1, and FIG. It is a schematic cross section of the formed bead shape part 16. As shown in FIGS. 6A and 6B, the outer peripheral flange of the inner panel 10 is provided with bead-shaped portions 16 at two locations. In FIG. 6B, the lower bead-shaped portion 16 is provided at the lower end of the outer peripheral flange of the inner panel 10 (the outer peripheral end when viewed from the inner panel 10 as a whole), and the upper bead-shaped portion 16 is the inner panel. It is provided below the corner portion of the outer peripheral flange 10 (inside the bead-shaped portion at the outer peripheral end when viewed from the inner panel 10 as a whole). The lower bead shape portion 16 has a larger bead shape than the upper bead shape portion 16. At the same time, it is preferable that a plurality of ribs 15 are uniformly provided on the lower side of the inner panel 10. Particularly when the inner panel 10 is an injection molded body, it is preferable to provide a rib on the lower side. The bead-shaped portion 16 and the rib 15 are effective in improving the molding dimensional accuracy. Therefore, the addition of such bead shape portions 16 and ribs 15 is also very effective for the inner panel 10 having a general plate thickness of 2.0 mm or less.
　図６に示すような玉縁形状部１６は、外周フランジの全体（すなわち外周フランジの上下辺及び左右側辺）に設けることが好ましいが、その一部のみに設けても構わない。さらに、玉縁形状部１６を図６に示すように２箇所に設けることが好ましいが、どちらか１箇所のみに設けても良いし、３箇所以上に設けても良い。玉縁形状部１６の大きさは任意であり、図６に示すように各々異なる大きさにしても良いし、同じ大きさにしても良い。図６に示すようなリブ１５は、インナーパネル１０の下辺全体に一様に設けることが好ましいが、下辺の一部のみに設けても構わない。また図６に示すような玉縁形状部１６及びリブ１５も、インナーパネル１０の成形時に同時成形された一体成形部であることが、製造の容易性の点から好ましく、その場合の玉縁形状部１６リブ１５を構成する材料はインナーパネル１０を構成する樹脂材料と同じ樹脂になる。ただし、本発明はこれに限定されない。 The bead-shaped portion 16 as shown in FIG. 6 is preferably provided on the entire outer peripheral flange (that is, the upper and lower sides and the left and right sides of the outer peripheral flange), but may be provided on only a part thereof. Further, the bead-shaped portion 16 is preferably provided at two places as shown in FIG. 6, but may be provided at only one place, or may be provided at three or more places. The bead-shaped portion 16 may have any size, and may have different sizes as shown in FIG. 6 or the same size. The rib 15 as shown in FIG. 6 is preferably provided uniformly on the entire lower side of the inner panel 10, but may be provided only on a part of the lower side. Further, it is preferable that the bead shape portion 16 and the rib 15 as shown in FIG. 6 are integrally formed at the same time when the inner panel 10 is formed, from the viewpoint of ease of production. In that case, the bead shape The material forming the ribs 15 of the portion 16 is the same as the resin material forming the inner panel 10. However, the present invention is not limited to this.
　本発明において、インナーパネルを構成する樹脂の種類は特に限定されず、公知の各種樹脂を使用できる。好ましい樹脂としては、例えば、プロピレン系樹脂やエチレン系樹脂等のポリオレフィン系樹脂、不飽和ポリエステル樹脂、アミド系樹脂が挙げられる。また、ガラス繊維、炭素繊維等の短・長繊維を含有する樹脂を使用しても良い。特に、繊維を含有する繊維強化樹脂組成物が好ましい。その成形法としては、例えば、射出成形法やＳＭＣ（シートモールディングコンパウンド）を用いたＳＭＣ成形法が挙げられる。本発明におけるインナーパネルは、特に、繊維強化樹脂組成物を用いて得られた射出成形体、又は、シートモールディングコンパウンドを用いて得られたＳＭＣ成形体であることが好ましい。 In the present invention, the type of resin forming the inner panel is not particularly limited, and various known resins can be used. Examples of preferable resins include polyolefin resins such as propylene resins and ethylene resins, unsaturated polyester resins, and amide resins. Further, a resin containing short and long fibers such as glass fiber and carbon fiber may be used. Particularly, a fiber-reinforced resin composition containing fibers is preferable. Examples of the molding method include an injection molding method and an SMC molding method using SMC (sheet molding compound). The inner panel in the present invention is preferably an injection molded product obtained by using the fiber reinforced resin composition or an SMC molded product obtained by using a sheet molding compound.
　本発明においては、インナーパネルの種類によって一般板厚の好適な範囲は異なる。例えば、インナーパネルが繊維強化樹脂組成物を用いて得られた射出成形体である場合は、その一般板厚は２.０ｍｍ以下であり、好ましくは０.５～２.０ｍｍ、より好ましくは０.５～１.８ｍｍである。一方、インナーパネルがシートモールディングコンパウンドを用いて得られたＳＭＣ成形体である場合は、その一般板厚は２.０ｍｍ以下であり、好ましくは１.８ｍｍ以下であり、より好ましくは０.５～１.８ｍｍ、特に好ましくは０.５～１.６ｍｍ、最も好ましくは０.５～１.４ｍｍである。 In the present invention, the suitable range of general plate thickness differs depending on the type of inner panel. For example, when the inner panel is an injection-molded product obtained by using the fiber reinforced resin composition, its general plate thickness is 2.0 mm or less, preferably 0.5 to 2.0 mm, and more preferably 0. It is 0.5 to 1.8 mm. On the other hand, when the inner panel is an SMC molded product obtained by using a sheet molding compound, the general plate thickness thereof is 2.0 mm or less, preferably 1.8 mm or less, more preferably 0.5 to It is 1.8 mm, particularly preferably 0.5 to 1.6 mm, most preferably 0.5 to 1.4 mm.
　本発明の車両用樹脂製バックドアは車両の軽量化の点で有用であり、特に、自動車等の車両に実際に使用可能な点で非常に有用である。 The vehicle-made resin back door of the present invention is useful in terms of weight reduction of the vehicle, and is particularly useful in that it can be actually used in vehicles such as automobiles.
　１０　インナーパネル
　１１　上辺の左コーナー部
　１２　上辺の右コーナー部
　１３　ヒンジリンフォースの取付部
　１４　ボルト穴
　１４ａ　ボス
　１５　リブ
　１５ａ　放射状リブ
　１６　玉縁形状部
　２０　ヒンジリンフォース
　２１　左側辺の中央部
　２２　右側辺の中央部
　３１　下辺の左コーナー部
　３２　下辺の右コーナー部
　４１　下辺の一部 10 Inner Panel 11 Left Corner of Upper Side 12 Right Corner of Upper Side 13 Hinge Reinforce Attachment 14 Bolt Hole 14a Boss 15 Rib 15a Radial Rib 16 Ball Edge Shape 20 Hinge Reinforce 21 Left Side Center 22 Right Side Central part 31 Lower left corner part 32 Lower right corner part 41 Part of lower side

Claims (10)

  1. 　互いに接着される樹脂製のインナーパネルと、アウターパネルとを有し、前記インナーパネルの一般板厚が２.０ｍｍ以下である車両用樹脂製バックドア。 ▽A resin back door for vehicles, which has a resin inner panel and an outer panel that are adhered to each other, and the inner panel has a general plate thickness of 2.0 mm or less.
  2. 　インナーパネルが、繊維強化樹脂組成物を用いて得られた射出成形体である請求項１に記載の車両用樹脂製バックドア。 The resin backdoor for vehicle according to claim 1, wherein the inner panel is an injection-molded article obtained by using the fiber-reinforced resin composition.
  3. 　インナーパネルが、シートモールディングコンパウンドを用いて得られたＳＭＣ成形体であり、一般板厚が１.８ｍｍ以下である請求項１に記載の車両用樹脂製バックドア。 The resin backdoor for vehicle according to claim 1, wherein the inner panel is an SMC molded body obtained by using a sheet molding compound, and has a general plate thickness of 1.8 mm or less.
  4. 　インナーパネルにヒンジ及びヒンジリンフォースが取付けられ、車両後部開口の上辺に前記ヒンジを介して揺動可能に連結される車両用樹脂製バックドアであって、前記ヒンジリンフォースの取付部には、前記ヒンジリンフォースを固定する為のボスが突設され、前記ボスの周囲には放射状リブが設けられている請求項１～３のいずれかに記載の車両用樹脂製バックドア。 A hinge and a hinge reinforce are attached to an inner panel, which is a resin backdoor for a vehicle that is swingably connected to an upper side of a vehicle rear opening through the hinge, wherein an attaching portion of the hinge reinforce is: The resin backdoor for a vehicle according to any one of claims 1 to 3, wherein a boss for fixing the hinge reinforcement is projected, and a radial rib is provided around the boss.
  5. 　周囲に放射状リブが設けられているボスが、インナーパネルの上辺の左コーナー部及び右コーナー部のうちの一方又は両方のヒンジリンフォースの取付部に設けられている請求項４に記載の車両用樹脂製バックドア。 5. The vehicle according to claim 4, wherein the bosses provided with radial ribs around the bosses are provided on a hinge reinforce attachment portion of one or both of a left corner portion and a right corner portion of an upper side of the inner panel. Resin back door.
  6. 　ボス及び放射状リブが、インナーパネルの成形時に同時成形された一体成形部である請求項４に記載の車両用樹脂製バックドア。 The resin backdoor for a vehicle according to claim 4, wherein the boss and the radial rib are an integrally formed part that is formed at the same time when the inner panel is formed.
  7. 　インナーパネルのベルトラインとピラーの交差部にリブが設けられている請求項１～３のいずれかに記載の車両用樹脂製バックドア。 The vehicle back door according to any one of claims 1 to 3, wherein ribs are provided at intersections of the belt lines of the inner panel and the pillars.
  8. 　インナーパネルの下辺の左コーナー部及び右コーナー部のうちの一方又は両方にリブが設けられている請求項１～３のいずれかに記載の車両用樹脂製バックドア。 The vehicle back door according to any one of claims 1 to 3, wherein a rib is provided on one or both of a left corner portion and a right corner portion of a lower side of the inner panel.
  9. 　インナーパネルの外周フランジに玉縁形状部が設けられている請求項１～３のいずれかに記載の車両用樹脂製バックドア。 The resin backdoor for vehicle according to any one of claims 1 to 3, wherein a bead-shaped portion is provided on an outer peripheral flange of the inner panel.
  10. 　インナーパネルの下部にリブが設けられている請求項２に記載の車両用樹脂製バックドア。 The resin back door for vehicle according to claim 2, wherein a rib is provided on a lower portion of the inner panel.
PCT/JP2019/002220 2019-01-24 2019-01-24 Vehicular resin back door WO2020152819A1 (en)

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PCT/JP2019/002220 WO2020152819A1 (en) 2019-01-24 2019-01-24 Vehicular resin back door
JP2020567311A JP7191126B2 (en) 2019-01-24 2019-01-24 Vehicle resin back door

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5820191A (en) * 1996-07-03 1998-10-13 Freightliner Corporation Inner-door panel for a vehicle
JP2013230717A (en) * 2012-04-27 2013-11-14 Hitachi Chemical Co Ltd Outer panel for resin made back door
JP2015182478A (en) * 2014-03-20 2015-10-22 ダイキョーニシカワ株式会社 Vehicle back door
US20150329066A1 (en) * 2014-05-15 2015-11-19 Honda Motor Co., Ltd. Tailgate liner assembly and method for vehicle tailgate
JP2016094065A (en) * 2014-11-13 2016-05-26 トヨタ自動車株式会社 Vehicle resin panel structure
JP2016107653A (en) * 2014-12-02 2016-06-20 トヨタ自動車株式会社 Back door structure for vehicle
JP2019010910A (en) * 2017-06-29 2019-01-24 ダイキョーニシカワ株式会社 Exterior panel for vehicles and manufacturing method of the same

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5820191A (en) * 1996-07-03 1998-10-13 Freightliner Corporation Inner-door panel for a vehicle
JP2013230717A (en) * 2012-04-27 2013-11-14 Hitachi Chemical Co Ltd Outer panel for resin made back door
JP2015182478A (en) * 2014-03-20 2015-10-22 ダイキョーニシカワ株式会社 Vehicle back door
US20150329066A1 (en) * 2014-05-15 2015-11-19 Honda Motor Co., Ltd. Tailgate liner assembly and method for vehicle tailgate
JP2016094065A (en) * 2014-11-13 2016-05-26 トヨタ自動車株式会社 Vehicle resin panel structure
JP2016107653A (en) * 2014-12-02 2016-06-20 トヨタ自動車株式会社 Back door structure for vehicle
JP2019010910A (en) * 2017-06-29 2019-01-24 ダイキョーニシカワ株式会社 Exterior panel for vehicles and manufacturing method of the same

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