JP2015009736A - Vehicle door structure - Google Patents

Vehicle door structure Download PDF

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Publication number
JP2015009736A
JP2015009736A JP2013138148A JP2013138148A JP2015009736A JP 2015009736 A JP2015009736 A JP 2015009736A JP 2013138148 A JP2013138148 A JP 2013138148A JP 2013138148 A JP2013138148 A JP 2013138148A JP 2015009736 A JP2015009736 A JP 2015009736A
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Prior art keywords
bead
door
reinforcing portion
auxiliary
main
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JP6218015B2 (en
Inventor
和秀 土屋
Kazuhide Tsuchiya
和秀 土屋
幸司 土田
Koji Tsuchida
幸司 土田
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Suzuki Motor Corp
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Suzuki Motor Corp
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Priority to JP2013138148A priority Critical patent/JP6218015B2/en
Priority to DE102014009535.5A priority patent/DE102014009535A1/en
Priority to CN201410307744.8A priority patent/CN104276010B/en
Publication of JP2015009736A publication Critical patent/JP2015009736A/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
    • B60J5/04—Doors arranged at the vehicle sides
    • B60J5/042—Reinforcement elements
    • B60J5/0422—Elongated type elements, e.g. beams, cables, belts or wires
    • B60J5/0423—Elongated type elements, e.g. beams, cables, belts or wires characterised by position in the lower door structure
    • B60J5/0429—Elongated type elements, e.g. beams, cables, belts or wires characterised by position in the lower door structure the elements being arranged diagonally
    • 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
    • B60J5/042—Reinforcement elements
    • B60J5/0455—Reinforcement elements integrated in door structure or other door elements, e.g. beam-like shapes stamped in inner door panel

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Superstructure Of Vehicle (AREA)
  • Body Structure For Vehicles (AREA)
  • Window Of Vehicle (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle door structure which can improve the rigidity of a door against a negative pressure load during a high speed travel by a shape of a door inner panel.SOLUTION: A vehicle door structure is provided with hinges at an upper and a lower position on one of side edge parts of a door inner panel 1 constituting a door panel and with a latch at a middle position in the vertical direction on the other side edge part of the door inner panel, and is attached to a door attachment frame of a vehicle body via the hinges. It is provided with a first main reinforcement part 19A extending from a belt line corner part at the door front edge to a lower corner part at the door rear edge in a panel surface 13 under a window frame 12 of the door inner panel 1.

Description

本発明は、車両の高速走行時に作用する負圧からドア剛性の向上を図ることができる車両のドア構造に関する。   The present invention relates to a door structure of a vehicle that can improve door rigidity from a negative pressure acting when the vehicle travels at a high speed.

周知のように、車両に設けられるドア構造として、サイドドアの上方ヒンジまたは、それに近接した位置からドアストライカの近くに向かって延びる補強ビームをインナパネルにスポット溶接で取り付けるようにした構造が知られている。しかしながら、ドアパネルに補強ビームを追加するため、ドアの重量及び補強ビームの取付工数が増加する。また、各種装置の搭載に必要なスペースをドア内に確保しようとすると、補強ビームの追加に伴ってドアの厚さが増加する虞がある。   As is well known, as a door structure provided in a vehicle, there is known a structure in which a reinforcing beam extending from an upper hinge of a side door or a position close to the side door toward the door striker is attached to an inner panel by spot welding. ing. However, since a reinforcing beam is added to the door panel, the weight of the door and the number of steps for mounting the reinforcing beam are increased. Moreover, when it is going to secure the space required for mounting various apparatuses in a door, there exists a possibility that the thickness of a door may increase with the addition of a reinforcement beam.

そこで、インナパネルに、ドアの周囲の互いに異なる側に配置されたヒンジ等の第１の結合部とラッチ等の第２の結合部とを結ぶように延びる補強加工部を設けた先行技術が知られている（特許文献１）   Therefore, there is known a prior art in which an inner panel is provided with a reinforcing portion extending so as to connect a first coupling portion such as a hinge and a second coupling portion such as a latch arranged on different sides around the door. (Patent Document 1)

この先行技術では、インナパネルの車両前方側の側壁に設けられた下側ヒンジと、車両後方側の側壁に設けられたロック部とを結ぶように延びるビードを設け、このビードの略中央から分岐されて上側ヒンジへ向かって延びる副ビードを設けている。   In this prior art, a bead extending so as to connect a lower hinge provided on the side wall of the inner panel on the front side of the vehicle and a lock portion provided on the side wall on the rear side of the vehicle is provided, and is branched from the approximate center of the bead. And a secondary bead extending toward the upper hinge is provided.

この先行技術によると、他の車両等がドアに衝突した場合には、インナパネルへの衝突荷重の入力によりビード及び副ビードに引っ張り応力が集中し、衝突荷重がこれらに生じる張力に変換されてインナパネルで受け止められる。そして、インナパネルで受け止められた衝突荷重は、ビード及び副ビードから上側ヒンジ、下側ヒンジ、及びロック部のそれぞれへ分散されて車体へ伝達される。   According to this prior art, when another vehicle or the like collides with the door, the tensile stress is concentrated on the bead and the secondary bead due to the input of the collision load to the inner panel, and the collision load is converted into the tension generated in these. Received by the inner panel. The collision load received by the inner panel is distributed from the bead and the sub bead to each of the upper hinge, the lower hinge, and the lock portion and transmitted to the vehicle body.

特許４６２２６３５号公報Japanese Patent No. 4622635 特許４７４０９４０号公報Japanese Patent No. 4740940 特表２０１０−５１７８４６号公報Special table 2010-517846 gazette

しかしながら、高速走行に際して、図７に示すように、ドアサッシュ１００上部に矢印Ｘのように室外方向への負圧荷重が発生し、図示しない車体のピラー上端が車体外側に吸い出されるため、ラッチ噛合い点１０１を中心に矢印Ｙ，Ｚのようにドアが回転し、ピラー下端が室内方向に変位する。こうして、ドア後部下端部１０２には大きな荷重が加わり変位が非常に大きくなる。これに対して、ドアのベルトライン１０３前端部では、上部ヒンジ取付部（上部側ヒンジ）１０４が設けられているため、変位は小さくなっている。このような、走行時の負圧荷重に対しては従来、何ら対策が施されていなかった。
先に説明した上記特許文献１に記載の先行技術によると、主に衝突対策を目的として、ビードの後端部がロック部に延びているため、上記のような負圧荷重に対しては、十分なドア剛性を得ることはできない。また、特許文献２，３に記載の先行技術についても負圧荷重に対しては対策が施されていなかった。 However, when traveling at high speed, as shown in FIG. 7, a negative pressure load in the outdoor direction is generated on the upper portion of the door sash 100 as indicated by an arrow X, and the pillar upper end of the vehicle body (not shown) is sucked out of the vehicle body. The door rotates around the meshing point 101 as indicated by arrows Y and Z, and the lower end of the pillar is displaced in the indoor direction. Thus, a large load is applied to the rear lower end 102 of the door, and the displacement becomes very large. On the other hand, since the upper hinge attaching part (upper side hinge) 104 is provided at the front end of the belt line 103 of the door, the displacement is small. Conventionally, no countermeasure has been taken against such negative pressure load during traveling.
According to the prior art described in the above-mentioned Patent Document 1, the rear end of the bead extends to the lock part mainly for the purpose of collision countermeasures. It is not possible to obtain sufficient door rigidity. In addition, no measures are taken against the negative pressure load in the prior arts described in Patent Documents 2 and 3.

本発明は、高速走行に際しての負圧荷重に対して、ドアインナパネル形状によってドア剛性を向上させることができる車両のドア構造を提供することを目的とする。   An object of the present invention is to provide a vehicle door structure capable of improving door rigidity with a door inner panel shape against a negative pressure load during high-speed traveling.

本発明は、上記課題を解決するため、ドアパネルを構成するドアインナパネルの一方の側辺部の上下にヒンジを取り付け、前記ドアインナパネルの他方の側辺部の上下方向中間位置にラッチ等のロック装置を取り付け、前記ヒンジを介して車体のドア取付枠に組付けられる車両のドア構造において、前記ドアインナパネルの窓枠下部のパネル面に、ドア前端のベルトライン角部からドア後端の下部角部を繋ぐ第１の主補強部を設けたことにある。
また、本発明は、前記ドアインナパネルのパネル面に、前記第１の主補強部の略中心位置からドア後端のベルトライン角部に向けて第２の主補強部を設けたことにある。
さらに、本発明は、前記ドアインナパネルのパネル面に、前記第１の主補強部の略中心位置からドア前端の下部角部に向けて第３の主補強部を設けたことにある。
またさらに、本発明は、前記主補強部の長手方向に沿って主ビードを形成したことにある。
また、前記ドア前端の側辺部と窓枠下部のベルトライン前端部を繋ぐ第１の補助ビードを設け、前記ドア後端の側辺部と前記ドアインナパネルの下辺部とを繋ぐ第２の補助ビードを設け、これら補助ビード相互間を前記第１の主補強部に形成した主ビードで繋いだことにある。
さらに、前記第１の主補強部に形成した主ビードの両端部に、二股に分岐する二股ビード部を設け、これら二股ビード部を介して前記補助ビードに前記主補強部に形成した主ビードを接続したことにある。
またさらに、前記ドア後端の側辺部とベルトライン後端部を繋ぐ第３の補助ビードを設け、該第３の補助ビードに前記第２の主補強部に形成した主ビードを接続したことにある。
また、前記ドア前端の側辺部と下辺部を繋ぐ第４の補助ビードを設け、該第４の補助ビードに前記第３の主補強部に形成した主ビードを接続したことにある。
さらに、前記第１の補助ビードの両端部と第３の補助ビードの両端部を前記ベルトライン部を通して接続するビード部を設けたことにある。
またさらに、前記第４の補助ビードの両端部と第２の補助ビードの両端部を前記ドアインナパネルの下辺部を通して接続するビード部を設けたことにある。
また、前記第１の主補強部と第２の主補強部を繋ぐ第１の補助補強部を設けたことにある。
さらに、前記第１の主補強部と前記ベルトライン部および／または下辺部を繋ぐ第２の補助補強部を設けたことにある。
またさらに、前記第２の主補強部と前記ベルトライン部を繋ぐ第２の補助補強部を設けたことにある。
また、前記第３の主補強部と前記下辺部を繋ぐ第３の補助補強部を設けたことにある。
さらに、前記第１ないし第３の補助補強部の長手方向に沿ってビードを形成したことにある。 In order to solve the above problems, the present invention attaches hinges to the upper and lower sides of one side portion of the door inner panel constituting the door panel, and latches or the like at an intermediate position in the vertical direction of the other side portion of the door inner panel. In a vehicle door structure to which a lock device is attached and assembled to a door mounting frame of a vehicle body via the hinge, a panel surface at a lower part of a window frame of the door inner panel is formed from a belt line corner of a door front end to a door rear end. The first main reinforcing portion connecting the lower corner portions is provided.
Moreover, this invention has provided the 2nd main reinforcement part toward the beltline corner | angular part of the door rear end from the approximate center position of the said 1st main reinforcement part in the panel surface of the said door inner panel. .
Further, according to the present invention, a third main reinforcing portion is provided on the panel surface of the door inner panel from a substantially central position of the first main reinforcing portion toward a lower corner portion of the door front end.
Furthermore, the present invention is that a main bead is formed along the longitudinal direction of the main reinforcing portion.
In addition, a first auxiliary bead that connects the side portion of the door front end and the belt line front end portion of the lower part of the window frame is provided, and a second side that connects the side portion of the door rear end and the lower side portion of the door inner panel is provided. An auxiliary bead is provided, and these auxiliary beads are connected to each other by a main bead formed in the first main reinforcing portion.
Further, a bifurcated bead portion bifurcated into two ends is provided at both end portions of the main bead formed in the first main reinforcing portion, and the main bead formed in the main reinforcing portion is formed on the auxiliary bead via the bifurcated bead portion. Being connected.
Still further, a third auxiliary bead connecting the side portion of the door rear end and the belt line rear end portion is provided, and the main bead formed in the second main reinforcing portion is connected to the third auxiliary bead. It is in.
In addition, a fourth auxiliary bead connecting the side portion and the lower side portion of the front end of the door is provided, and the main bead formed in the third main reinforcing portion is connected to the fourth auxiliary bead.
Furthermore, a bead portion is provided for connecting both end portions of the first auxiliary bead and both end portions of the third auxiliary bead through the belt line portion.
Furthermore, a bead portion is provided for connecting both end portions of the fourth auxiliary bead and both end portions of the second auxiliary bead through the lower side portion of the door inner panel.
In addition, a first auxiliary reinforcing portion that connects the first main reinforcing portion and the second main reinforcing portion is provided.
Furthermore, a second auxiliary reinforcing portion that connects the first main reinforcing portion and the belt line portion and / or the lower side portion is provided.
Furthermore, a second auxiliary reinforcing portion that connects the second main reinforcing portion and the belt line portion is provided.
Further, a third auxiliary reinforcing portion that connects the third main reinforcing portion and the lower side portion is provided.
Furthermore, a bead is formed along the longitudinal direction of the first to third auxiliary reinforcing portions.

本発明によれば、以下の効果を奏することができる。
車体へのドア取付状態において、ドアインナパネルのドアヒンジとラッチ噛合い点とを結ぶ方向を回転軸とするねじり剛性を効果的に高めることができ、ドアのサッシュ剛性を向上させることができる。
第１乃至第３の主補強部の端末をドアインナパネルの強固な部分に結合させることにより、ドアヒンジとラッチ噛合い点とを結ぶ方向を回転軸とするねじり剛性をさらに高めることができる。
主補強部の長手方向に沿って主ビードを形成し、補助補強部の長手方向に沿ってビードを形成したので、重量、コストを抑制しながら、ドアインナパネルのねじり剛性を高めることができ、ドアのサッシュ剛性を向上させることができる。 According to the present invention, the following effects can be obtained.
When the door is attached to the vehicle body, the torsional rigidity with the direction connecting the door hinge of the door inner panel and the latch engagement point as the rotation axis can be effectively increased, and the sash rigidity of the door can be improved.
By connecting the ends of the first to third main reinforcing portions to the strong portion of the door inner panel, the torsional rigidity with the direction connecting the door hinge and the latch engagement point as the rotation axis can be further increased.
Since the main bead is formed along the longitudinal direction of the main reinforcing portion and the bead is formed along the longitudinal direction of the auxiliary reinforcing portion, the torsional rigidity of the door inner panel can be increased while suppressing weight and cost. The sash rigidity of the door can be improved.

本発明の第１の実施の形態による車両のドア構造を示す概念図である。It is a conceptual diagram which shows the door structure of the vehicle by the 1st Embodiment of this invention. 図１のＡ−Ａ線断面図である。It is the sectional view on the AA line of FIG. 本発明の第２の実施の形態による車両のドア構造を示す概念図である。It is a conceptual diagram which shows the door structure of the vehicle by the 2nd Embodiment of this invention. 本発明の第３の実施の形態による車両のドア構造を示す概念図である。It is a conceptual diagram which shows the door structure of the vehicle by the 3rd Embodiment of this invention. 図４の斜め前方からの斜視図である。It is a perspective view from diagonally forward of FIG. 図４のＢ−Ｂ線断面図である。It is the BB sectional view taken on the line of FIG. 走行時の負圧によって発生するドアパネルのねじり作用について説明する概念図である。It is a conceptual diagram explaining the twist action of the door panel which generate | occur | produces with the negative pressure at the time of driving | running | working.

以下、本発明の実施の形態を、図面を参照しながら詳細に説明する。
（第１の実施の形態）
図１は、本発明の車両のドア構造を示すドアインナパネルの室内側から見た概念図である。
ドアインナパネル１は、図示しないドアアウタパネルに組付けられてドアパネル２を構成するもので、ドアインナパネル１の車両前方側に位置する一方の側辺部１０には、上下方向に一定間隔をおいて上部側ヒンジ３と下部側ヒンジ４が設けられている。また、ドアインナパネル１の車両後方側に位置する他方の側辺部１１には、上下方向の中間位置にロック装置としてのラッチ機構５が設けられている。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
(First embodiment)
FIG. 1 is a conceptual view of a door inner panel showing a door structure of a vehicle according to the present invention as viewed from the room side.
The door inner panel 1 is assembled to a door outer panel (not shown) to constitute a door panel 2, and one side portion 10 located on the vehicle front side of the door inner panel 1 has a certain interval in the vertical direction. An upper hinge 3 and a lower hinge 4 are provided. Further, a latch mechanism 5 as a lock device is provided at an intermediate position in the vertical direction on the other side portion 11 located on the vehicle rear side of the door inner panel 1.

前記ドアインナパネル１には、上部側に設けられた窓枠１２の下部側に室内側に突出したパネル面１３が設けられている。このパネル面１３には、前記窓枠１２の下縁に沿った所謂ベルトライン部１４および前記ドアインナパネル１の前後の側辺部１０，１１並びに下辺部１５に沿った４辺にビード１６が連続して設けられている。このパネル面１３には、ドア前端に位置する前記ベルトライン部１４の前端上部角部１７Ａ（ドア前端のベルトライン角部）から、ドア後端に位置する後端下部角部１８Ｂを繋ぐ帯状の第１の主補強部１９Ａが設けられている。この第１の主補強部１９Ａの板面には、長手方向に主ビード２０が設けられ、この主ビード２０の先がそれぞれ二股に分岐されて二股ビード部２０ａ，２０ｂを形成している。
図２は図１のＡ−Ａ線の断面図で、第１の主補強部１９Ａに円弧状に膨出した主ビード２０が形成されている。前記二股ビード部２０ａ，２０ｂには、二股ビード部２０ａ，２０ａ相互を繋ぐ第１の補助ビード２１Ａ、二股ビード部２０ｂ，２０ｂ相互を繋ぐ第２の補助ビード２１Ｂが設けられている。第１の補助ビード２１Ａは、前記ドア前端の側辺部１０と窓枠１２下部のベルトライン部１４の前端部を斜めに繋ぐビードで、二股ビード部２０ａ，２０ａとともに三角形Ｔ１を形成している。第２の補助ビード２１Ｂは、前記ドア後端の側辺部１１と前記ドアインナパネル１の下辺部１５とを斜めに繋ぐビードで、二股ビード部２０ｂ，２０ｂとともに三角形Ｔ２を形成している。
二股ビード部２０ａ，２０ｂは、それぞれ、第１の補助ビード２１Ａ、第２の補助ビード２１Ｂを介して、または直接、前端上部角部１７Ａ、後端下部角部１８Ｂの前記ビード１６に接続されている。第１の補助ビード２１Ａおよび第２の補助ビード２１Ｂの両端部は、前記ビード１６に接続されている。
パネル面１３の形状やスペース等の理由により、二股ビード部２０ａ，２０ｂが設けられない場合、第１の主補強部１９Ａに形成された主ビード２０を前記ビード１６または第１の補助ビード２１Ａ、第２の補助ビード２１Ｂに直接接続してもよい。 The door inner panel 1 is provided with a panel surface 13 projecting indoors on the lower side of a window frame 12 provided on the upper side. The panel surface 13 has beads 16 on four sides along the so-called belt line portion 14 along the lower edge of the window frame 12 and the front and rear side portions 10 and 11 and the lower side portion 15 of the door inner panel 1. It is provided continuously. The panel surface 13 has a belt-like shape that connects a front end upper corner portion 17A (belt line corner portion of the door front end) of the belt line portion 14 located at the door front end to a rear end lower corner portion 18B located at the door rear end. A first main reinforcing portion 19A is provided. A main bead 20 is provided in the longitudinal direction on the plate surface of the first main reinforcing portion 19A, and the tip of the main bead 20 is bifurcated to form bifurcated bead portions 20a and 20b.
FIG. 2 is a cross-sectional view taken along the line AA of FIG. 1, and a main bead 20 bulging in an arc shape is formed in the first main reinforcing portion 19A. The bifurcated bead portions 20a and 20b are provided with a first auxiliary bead 21A for connecting the bifurcated bead portions 20a and 20a and a second auxiliary bead 21B for connecting the bifurcated bead portions 20b and 20b. The first auxiliary beads 21A, the front end portion of the door front end of the side portion 10 and the window frame 12 the lower part of the belt line portion 14 in a bead connecting diagonally to form a triangle T 1 forked bead portion 20a, together with 20a Yes. Second auxiliary bead 21B is a bead which connects the said lower portion 15 of the side portion 11 of the door rear and the door inner panel 1 at an angle, forming a triangle T 2 forked bead portion 20b, together with 20b .
The bifurcated bead portions 20a and 20b are connected to the bead 16 of the front end upper corner portion 17A and the rear end lower corner portion 18B via the first auxiliary bead 21A and the second auxiliary bead 21B, respectively. Yes. Both ends of the first auxiliary bead 21 </ b> A and the second auxiliary bead 21 </ b> B are connected to the bead 16.
When the bifurcated bead portions 20a and 20b are not provided due to the shape and space of the panel surface 13, the bead 16 or the first auxiliary bead 21A, the main bead 20 formed on the first main reinforcing portion 19A, You may connect directly to the 2nd auxiliary bead 21B.

前記パネル面１３の前記ビード１６が設けられたベルトライン部１４および前記ドアインナパネル１の前後の側辺部１０，１１並びに下辺部１５に沿った４辺および、第１の主補強部１９以外の部分には開口穴２２を形成してドアインナパネル１の重量を削減することができる。   Other than the belt line portion 14 provided with the beads 16 of the panel surface 13, the front and rear side portions 10 and 11 and the lower side portion 15 of the door inner panel 1, and the first main reinforcing portion 19. In this portion, an opening hole 22 can be formed to reduce the weight of the door inner panel 1.

上記構成によるドアインナパネル１を用いたドア構造の作用を説明する。
高速走行時に働く負圧をドアパネル２が受けると、ドアパネル２の前端部は、上部側ヒンジ３によって車体に取り付けられているので、ベルトライン部１４の前端上部角部１７Ａには、それほど大きな荷重がかからない。したがって、ベルトライン部１４の前端上部角部１７Ａの変位は小さい。一方、ドアパネル２の後端部は、上下方向の中間位置に設けられたロック装置としてのラッチ機構５によって、固定されている。したがって、ラッチ機構５から離れたドアパネル２の後端窓枠１２上部および後端下部角部１８Ｂは、ドアパネル２が走行時に受ける負圧によって大きな変位荷重を受ける。この時、前端上部角部１７Ａと後端下部角部１８Ｂには、矢視Ｆ１、Ｆ２のように、互いに縮まろうとする力が働く。
しかしながら、前端上部角部１７Ａと後端下部角部１８Ｂは、第１の主補強部１９Ａによって接続されているので、一定の距離を維持することができる。
したがって、上部側ヒンジ３とラッチ機構５（ラッチ噛合い点）を結ぶ線、あるいは下部側ヒンジ４とラッチ機構５（ラッチ噛合い点）を結ぶ方向を回転軸とするねじり作用に対しても第１の主補強部１９Ａによってねじり剛性を確保することができ、ドアのサッシュ剛性を向上させることができる。
第１の主補強部１９Ａの両端部には、二股ビード部２０ａ，２０ａ相互を繋ぐ第１の補助ビード２１Ａ、二股ビード部２０ｂ，２０ｂ相互を繋ぐ第２の補助ビード２１Ｂが設けられてそれぞれ三角形Ｔ１，Ｔ２が形成されているので、十分なねじり剛性を確保することができる。 The operation of the door structure using the door inner panel 1 having the above configuration will be described.
When the door panel 2 receives negative pressure that is applied during high-speed running, the front end of the door panel 2 is attached to the vehicle body by the upper hinge 3, so that a large load is applied to the front end upper corner 17 </ b> A of the belt line portion 14. It does not take. Accordingly, the displacement of the front end upper corner portion 17A of the belt line portion 14 is small. On the other hand, the rear end portion of the door panel 2 is fixed by a latch mechanism 5 serving as a locking device provided at an intermediate position in the vertical direction. Therefore, the upper part of the rear end window frame 12 and the lower corner part 18B of the rear end of the door panel 2 away from the latch mechanism 5 receive a large displacement load due to the negative pressure that the door panel 2 receives during traveling. At this time, forces that try to contract each other are applied to the front end upper corner portion 17A and the rear end lower corner portion 18B as indicated by arrows F 1 and F 2 .
However, since the front end upper corner portion 17A and the rear end lower corner portion 18B are connected by the first main reinforcing portion 19A, a constant distance can be maintained.
Therefore, even when the rotation axis is a line connecting the upper hinge 3 and the latch mechanism 5 (latch engagement point), or the direction connecting the lower hinge 4 and the latch mechanism 5 (latch engagement point), the rotation is not affected. The torsional rigidity can be ensured by the one main reinforcing portion 19A, and the sash rigidity of the door can be improved.
A first auxiliary bead 21A that connects the bifurcated bead portions 20a and 20a and a second auxiliary bead 21B that connects the bifurcated bead portions 20b and 20b are provided at both ends of the first main reinforcing portion 19A. Since T 1 and T 2 are formed, sufficient torsional rigidity can be ensured.

（第２の実施の形態）
次に図３は本発明の第２の実施の形態で、図１と同一部分は同符号を付して、同一部分の説明は省略して説明する。
この場合、前記ドアインナパネル１のパネル面１３に、前記第１の主補強部１９Ａの長手方向の中心位置Ｏからドア後端のベルトライン部１４の後端上部角部１７Ｂ（ドア後端のベルトライン角部）に向けて第２の主補強部１９Ｂを設けたものである。この第２の主補強部１９Ｂの長手方向に第１の主補強部１９Ａと同様に図２に示すようなビード２０が設けられている。
前記第２の主補強部１９Ｂの先には、ドア後端の側辺部１１とベルトライン１４後端部を繋ぐ第３の補助ビード２１Ｃが設けられ、該第３の補助ビード２１Ｃに前記第２の主補強部１９Ｂに形成した主ビード２０が接続されている。前記第３の補助ビード２１Ｃの両端部は、前記ビード１６に接続されている。前記第１の主補強部１９Ａと第２の主補強部１９Ｂとの間には、略三角形（図３では、略四角形が形成されている。）Ｔ３を形成するように繋ぐ第１の補助補強部２３Ａが略縦方向に形成されている。第１の補助補強部２３Ａには、長手方向に沿ってビードが形成されている。 (Second Embodiment)
Next, FIG. 3 shows a second embodiment of the present invention, in which the same parts as those in FIG.
In this case, on the panel surface 13 of the door inner panel 1, the rear upper end corner 17B of the belt line portion 14 at the rear end of the door from the longitudinal center position O of the first main reinforcing portion 19A (the rear end of the door). A second main reinforcing portion 19B is provided toward the beltline corner portion. Like the first main reinforcing portion 19A, a bead 20 as shown in FIG. 2 is provided in the longitudinal direction of the second main reinforcing portion 19B.
A third auxiliary bead 21C is provided at the tip of the second main reinforcing portion 19B to connect the side portion 11 at the rear end of the door and the rear end portion of the belt line 14, and the third auxiliary bead 21C includes the third auxiliary bead 21C. A main bead 20 formed on the second main reinforcing portion 19B is connected. Both ends of the third auxiliary bead 21 </ b> C are connected to the bead 16. Between the first main reinforcing portion 19A and the second main reinforcing portion 19B, a first auxiliary connected so as to form a substantially triangular shape (a substantially rectangular shape is formed in FIG. 3 ) T3. The reinforcing portion 23A is formed in a substantially vertical direction. The first auxiliary reinforcing portion 23A is formed with beads along the longitudinal direction.

この実施の形態の場合にも、前記パネル面１３の前記ビード１６が設けられたベルトライン部１４および前記ドアインナパネル１の前後の側辺部１０，１１並びに下辺部１５に沿った４辺および、第１の主補強部１９Ａ、第２の主補強部１９Ｂ以外の部分には開口穴２２を形成してドアインナパネル１の重量を削減することができる。第１の補助補強部２３Ａによって、第１の主補強部１９Ａと第２の主補強部１９Ｂが接続されているので、ドアインナパネル１の剛性をより向上することができる。   Also in this embodiment, the belt line portion 14 provided with the beads 16 on the panel surface 13, the front and rear side portions 10 and 11 of the door inner panel 1, and the four sides along the lower side portion 15 and The opening hole 22 can be formed in a portion other than the first main reinforcing portion 19A and the second main reinforcing portion 19B, and the weight of the door inner panel 1 can be reduced. Since the first main reinforcing portion 19A and the second main reinforcing portion 19B are connected by the first auxiliary reinforcing portion 23A, the rigidity of the door inner panel 1 can be further improved.

上記実施の形態によれば、前端上部角部１７Ａと後端下部角部１８Ｂは、第１の主補強部１９Ａによって、また、第１の主補強部１９Ａの長手方向の中心位置Ｏからドア後端のベルトライン部１４の後端上部角部１７Ｂに向けて第２の主補強部１９Ｂによって、接続されているので、一定の距離を維持することができる。したがって、上部側ヒンジ３とラッチ機構５（ラッチ噛合い点）を結ぶ線、あるいは下部側ヒンジ４とラッチ機構５（ラッチ噛合い点）を結ぶ方向を回転軸とする、ねじり作用に対しても第１の主補強部１９Ａ、および第２の主補強部１９Ｂによって、ねじり剛性を確保することができ、ドアのサッシュ剛性を向上させることができる。   According to the above embodiment, the front end upper corner portion 17A and the rear end lower corner portion 18B are rearward from the center position O in the longitudinal direction of the first main reinforcement portion 19A by the first main reinforcement portion 19A. Since it is connected by the second main reinforcing portion 19B toward the rear end upper corner portion 17B of the end belt line portion 14, a constant distance can be maintained. Therefore, even with respect to a torsional action in which the rotation axis is a line connecting the upper hinge 3 and the latch mechanism 5 (latch engagement point) or a direction connecting the lower hinge 4 and the latch mechanism 5 (latch engagement point). The first main reinforcing portion 19A and the second main reinforcing portion 19B can ensure torsional rigidity and improve the sash rigidity of the door.

（第３の実施の形態）
次に図４、および図５は本発明の第３の実施の形態で、図１及び図３と同一部分は同符号を付して、同一部分の説明は省略して説明する。
この場合、前記ドアインナパネル１のパネル面１３に、ドア前端の下部角部１８Ａから前記第１の主補強部１９Ａの長手方向の中心位置Ｏを通り、ドア後端のベルトライン部１４の後端上部角部１７Ｂに向けて第３の主補強部１９Ｃを設けたものである。第３の主補強部１９Ｃの両端部には、第３の主補強部１９Ｃの長手方向に設けられたビード２０が、それぞれドア前端の下部角部１８Ａとドア後端の上部角部１７Ｂを跨いで設けられた第４の補助ビード２１Ｄ，第３の補助ビード２１Ｃに接続されている。前記第４の補助ビード２１Ｄは、ドア前端の側辺部１０と下辺部１５とを斜めに繋ぎ、前記第４の補助ビード２１Ｄの両端部は、前記ビード１６に接続されている。
この第３の実施の形態は、図３の実施例において、前記第１の主補強部１９Ａの中心位置Ｏからドア前端の下部角部に向けて第３の主補強部１９Ｃを設けたものでもよい。
第３の主補強部１９Ｃには、第２の主補強部１９Ｂと同様に、図６に示すような長手方向に主ビード２０が形成されている。第１の主補強部１９Ａとベルトライン部１４を繋ぐ第２の補助補強部２３Ｂを設けることで、ねじり剛性をより一層、確保することができる。この第２の補助補強部２３Ｂは、第１の主補強部１９Ａから下辺部１５との間に設けても良い。この第２の補助補強部２３Ｂは、第２の主補強部１９Ｂからベルトライン部１４との間に設けてもよい。さらに、第３の主補強部１９Ｃから下辺部１５との間に第３の補助補強部２３Ｃを設けても良い。第２の補助補強部２３Ｂおよび第３の補助補強部２３Ｃには、長手方向に沿ってビードが形成されている。 (Third embodiment)
Next, FIGS. 4 and 5 show a third embodiment of the present invention. The same parts as those in FIGS. 1 and 3 are denoted by the same reference numerals, and description of the same parts is omitted.
In this case, it passes through the longitudinal center position O of the first main reinforcing portion 19A from the lower corner portion 18A of the door front end to the panel surface 13 of the door inner panel 1 and the rear of the belt line portion 14 at the rear end of the door. A third main reinforcing portion 19C is provided toward the upper end corner portion 17B. At both ends of the third main reinforcing portion 19C, beads 20 provided in the longitudinal direction of the third main reinforcing portion 19C straddle the lower corner portion 18A of the door front end and the upper corner portion 17B of the door rear end, respectively. Are connected to a fourth auxiliary bead 21D and a third auxiliary bead 21C. The fourth auxiliary bead 21 </ b> D obliquely connects the side part 10 and the lower side part 15 of the door front end, and both end parts of the fourth auxiliary bead 21 </ b> D are connected to the bead 16.
In the third embodiment, the third main reinforcing portion 19C is provided from the center position O of the first main reinforcing portion 19A toward the lower corner portion of the door front end in the embodiment of FIG. Good.
A main bead 20 is formed in the third main reinforcing portion 19C in the longitudinal direction as shown in FIG. 6, similarly to the second main reinforcing portion 19B. By providing the second auxiliary reinforcing portion 23B that connects the first main reinforcing portion 19A and the belt line portion 14, the torsional rigidity can be further ensured. The second auxiliary reinforcing portion 23B may be provided between the first main reinforcing portion 19A and the lower side portion 15. The second auxiliary reinforcing portion 23B may be provided between the second main reinforcing portion 19B and the belt line portion 14. Furthermore, a third auxiliary reinforcing portion 23C may be provided between the third main reinforcing portion 19C and the lower side portion 15. Beads are formed along the longitudinal direction of the second auxiliary reinforcing portion 23B and the third auxiliary reinforcing portion 23C.

この実施の形態の場合にも、図１で示された前記パネル面１３の前記ビード１６が設けられたベルトライン部１４および前記ドアインナパネル１の前後の側辺部１０，１１並びに下辺部１５に沿った４辺および、第１の主補強部１９Ａ、第２の主補強部１９Ｂ、第３の主補強部１９Ｃ以外の部分には開口穴２２を形成してドアインナパネル１の重量を削減することができる。   Also in this embodiment, the belt line portion 14 provided with the beads 16 of the panel surface 13 shown in FIG. 1, the front and rear side portions 10 and 11 and the lower side portion 15 of the door inner panel 1. 4 sides and the portions other than the first main reinforcing portion 19A, the second main reinforcing portion 19B, and the third main reinforcing portion 19C are formed with opening holes 22 to reduce the weight of the door inner panel 1. can do.

上記実施の形態によれば、前端上部角部１７Ａと後端下部角部１８Ｂは、第１の主補強部１９Ａによって、また、第１の主補強部１９Ａの長手方向の中心位置Ｏからドア後端のベルトライン部１４の後端上部角部１７Ｂに向けて第２の主補強部１９Ｂによって、さらに、前記第１の主補強部１９Ａの中心位置Ｏからドア前端の下部角部１８Ａに向けて第３の主補強部１９Ｃによって接続されているので、それぞれの角部から中心位置Ｏまで、一定の距離を維持することができる。したがって、上部側ヒンジ３とラッチ機構５（ラッチ噛合い点）を結ぶ線、あるいは下部側ヒンジ４とラッチ機構５（ラッチ噛合い点）を結ぶ方向を回転軸とする、ねじり作用に対しても第１の主補強部１９Ａ、および第２の主補強部１９Ｂ、第３の主補強部１９Ｃによって、ねじり剛性を確保することができ、ドアのサッシュ剛性を向上させることができる。   According to the above embodiment, the front end upper corner portion 17A and the rear end lower corner portion 18B are rearward from the center position O in the longitudinal direction of the first main reinforcement portion 19A by the first main reinforcement portion 19A. By the second main reinforcing portion 19B toward the rear end upper corner portion 17B of the belt line portion 14 at the end, further from the center position O of the first main reinforcing portion 19A toward the lower corner portion 18A of the door front end. Since they are connected by the third main reinforcing portion 19C, a certain distance can be maintained from each corner portion to the center position O. Therefore, even with respect to a torsional action in which the rotation axis is a line connecting the upper hinge 3 and the latch mechanism 5 (latch engagement point) or a direction connecting the lower hinge 4 and the latch mechanism 5 (latch engagement point). The first main reinforcing portion 19A, the second main reinforcing portion 19B, and the third main reinforcing portion 19C can ensure torsional rigidity and improve door sash rigidity.

なお、本発明は、上記実施の形態のみに限定されるものではなく、例えば、上記第１ないし第３の実施の形態により、それぞれの構成および作用効果について説明したが、それぞれの第１ないし第３の実施の形態の構成を合わせて用いることも可能であり、また、その構成に基づく作用効果が得られることは言うまでもない。その他、本発明の技術的範囲を変更しない範囲内で適宜変更して実施し得ることは言うまでもない。   The present invention is not limited to the above-described embodiments. For example, the respective configurations and operational effects have been described according to the first to third embodiments. However, the first to third embodiments have been described. Needless to say, the configuration of the third embodiment can be used in combination, and the effects based on the configuration can be obtained. In addition, it cannot be overemphasized that it can change suitably and can implement within the range which does not change the technical scope of the present invention.

１ ドアインナパネル
２ ドアパネル
３ 上部側ヒンジ
４ 下部側ヒンジ
５ ラッチ機構（ロック装置）
１０ ドア前端の側辺部（一方の側辺部）
１１ ドア後端の側辺部（他方の側辺部）
１２ 窓枠
１３ パネル面
１４ ベルトライン部
１５ 下辺部
１６ ビード（ビード部）
１７Ａ 前端上部角部（ドア前端のベルトライン角部）
１７Ｂ 後端上部角部（ドア後端のベルトライン角部）
１８Ａ ドア前端下部角部
１８Ｂ ドア後端下部角部
１９Ａ 第１の主補強部
１９Ｂ 第２の主補強部
１９Ｃ 第３の主補強部
２０ 主ビード
２０ａ，２０ｂ 二股ビード部
２１Ａ 第１の補助ビード
２１Ｂ 第２の補助ビード
２１Ｃ 第３の補助ビード
２１Ｄ 第４の補助ビード
２２ 開口穴
２３Ａ 第１の補助補強部
２３Ｂ 第２の補助補強部
２３Ｃ 第３の補助補強部 DESCRIPTION OF SYMBOLS 1 Door inner panel 2 Door panel 3 Upper side hinge 4 Lower side hinge 5 Latch mechanism (locking device)
10 Side of the front edge of the door (one side)
11 Side part of the rear end of the door (the other side part)
12 Window frame 13 Panel surface 14 Belt line part 15 Lower side part 16 Bead (bead part)
17A Front end upper corner (Belt line corner at the front end of the door)
17B Upper corner of rear end (belt line corner of rear end of door)
18A Door front end lower corner portion 18B Door rear end lower corner portion 19A First main reinforcing portion 19B Second main reinforcing portion 19C Third main reinforcing portion 20 Main beads 20a, 20b Bifurcated beads 21A First auxiliary beads 21B 2nd auxiliary bead 21C 3rd auxiliary bead 21D 4th auxiliary bead 22 Opening hole 23A 1st auxiliary reinforcement part 23B 2nd auxiliary reinforcement part 23C 3rd auxiliary reinforcement part

Claims (15)

ドアパネルを構成するドアインナパネルの一方の側辺部の上下にヒンジを取り付け、前記ドアインナパネルの他方の側辺部の上下方向中間位置にロック装置を取り付け、前記ヒンジを介して車体のドア取付枠に組付けられる車両のドア構造において、前記ドアインナパネルの窓枠下部のパネル面に、ドア前端のベルトライン角部からドア後端の下部角部を繋ぐ第１の主補強部を設けたことを特徴とする車両のドア構造。   A hinge is attached to the upper and lower sides of one side of the door inner panel constituting the door panel, and a locking device is attached to an intermediate position in the vertical direction of the other side of the door inner panel. In the vehicle door structure assembled to the frame, a first main reinforcing portion is provided on the panel surface at the lower part of the window frame of the door inner panel to connect the belt line corner at the door front end to the lower corner at the door rear end. A vehicle door structure characterized by that. 前記ドアインナパネルのパネル面に、前記第１の主補強部の略中心位置からドア後端のベルトライン角部に向けて第２の主補強部を設けたことを特徴とする請求項１に記載の車両のドア構造。   The second main reinforcing portion is provided on a panel surface of the door inner panel from a substantially center position of the first main reinforcing portion toward a belt line corner at the rear end of the door. The vehicle door structure described. 前記ドアインナパネルのパネル面に、前記第１の主補強部の略中心位置からドア前端の下部角部に向けて第３の主補強部を設けたことを特徴とする請求項１または２に記載の車両のドア構造。   3. The third main reinforcing portion is provided on the panel surface of the door inner panel from a substantially central position of the first main reinforcing portion toward a lower corner portion of the door front end. The vehicle door structure described. 前記主補強部の長手方向に沿って主ビードを形成したことを特徴とする請求項１ないし３のいずれか１項に記載の車両のドア構造。   The vehicle door structure according to any one of claims 1 to 3, wherein a main bead is formed along a longitudinal direction of the main reinforcing portion. 前記ドア前端の側辺部と窓枠下部のベルトライン前端部を繋ぐ第１の補助ビードを設け、前記ドア後端の側辺部と前記ドアインナパネルの下辺部とを繋ぐ第２の補助ビードを設け、これら補助ビード相互間を前記第１の主補強部に形成した主ビードで繋いだことを特徴とする請求項４に記載の車両のドア構造。   A first auxiliary bead that connects the side side of the door front end and the belt line front end of the lower part of the window frame and connects the side side of the door rear end and the lower side of the door inner panel; The vehicle door structure according to claim 4, wherein the auxiliary beads are connected by a main bead formed in the first main reinforcing portion. 前記第１の主補強部に形成した主ビードの両端部に、二股に分岐する二股ビード部を設け、これら二股ビード部を介して前記補助ビードに前記第１の主補強部に形成した主ビードを接続したことを特徴とする請求項５に記載の車両のドア構造。   A bifurcated bead portion bifurcated into two ends is provided at both ends of the main bead formed on the first main reinforcing portion, and the main bead formed on the auxiliary main bead on the first main reinforcing portion via these bifurcated bead portions. The vehicle door structure according to claim 5, wherein: 前記ドア後端の側辺部とベルトライン後端部を繋ぐ第３の補助ビードを設け、該第３の補助ビードに前記第２の主補強部に形成した主ビードを接続したことを特徴とする請求項４ないし６のいずれか１項に記載の車両のドア構造。   A third auxiliary bead connecting the side portion of the rear end of the door and the rear end of the belt line is provided, and the main bead formed in the second main reinforcing portion is connected to the third auxiliary bead. The vehicle door structure according to any one of claims 4 to 6. 前記ドア前端の側辺部と下辺部を繋ぐ第４の補助ビードを設け、該第４の補助ビードに前記第３の主補強部に形成した主ビードを接続したことを特徴とする請求項４ないし７のいずれか１項に記載の車両のドア構造。   5. The fourth auxiliary bead for connecting the side and lower sides of the front end of the door is provided, and the main bead formed on the third main reinforcing portion is connected to the fourth auxiliary bead. The vehicle door structure according to any one of claims 7 to 7. 前記第１の補助ビードの両端部と第３の補助ビードの両端部を前記ベルトライン部を通して接続するビード部を設けたことを特徴とする請求項７に記載の車両のドア構造。   The vehicle door structure according to claim 7, wherein a bead portion is provided for connecting both end portions of the first auxiliary bead and both end portions of the third auxiliary bead through the belt line portion. 前記第４の補助ビードの両端部と第２の補助ビードの両端部を前記ドアインナパネルの下辺部を通して接続するビード部を設けたことを特徴とする請求項８に記載の車両のドア構造。       The vehicle door structure according to claim 8, further comprising a bead portion that connects both ends of the fourth auxiliary bead and both ends of the second auxiliary bead through a lower side portion of the door inner panel. 前記第１の主補強部と第２の主補強部を繋ぐ第１の補助補強部を設けたことを特徴とする請求項２に記載の車両のドア構造。   The vehicle door structure according to claim 2, wherein a first auxiliary reinforcing portion that connects the first main reinforcing portion and the second main reinforcing portion is provided. 前記第１の主補強部と前記ベルトライン部および／または下辺部を繋ぐ第２の補助補強部を設けたことを特徴とする請求項９ないし１１のいずれか１項に記載の車両のドア構造。   The vehicle door structure according to any one of claims 9 to 11, further comprising a second auxiliary reinforcing portion that connects the first main reinforcing portion to the belt line portion and / or the lower side portion. . 前記第２の主補強部と前記ベルトライン部を繋ぐ第２の補助補強部を設けたことを特徴とする請求項９または１１に記載の車両のドア構造。   The vehicle door structure according to claim 9 or 11, further comprising a second auxiliary reinforcing portion that connects the second main reinforcing portion and the belt line portion. 前記第３の主補強部と前記下辺部を繋ぐ第３の補助補強部を設けたことを特徴とする請求項３または１０に記載の車両のドア構造。   The vehicle door structure according to claim 3 or 10, further comprising a third auxiliary reinforcing portion that connects the third main reinforcing portion and the lower side portion. 前記第１ないし第３の補助補強部の長手方向に沿ってビードを形成したことを特徴とする請求項１１ないし１４のいずれか１項に記載の車両のドア構造。   The vehicle door structure according to any one of claims 11 to 14, wherein a bead is formed along a longitudinal direction of the first to third auxiliary reinforcing portions.
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