JP7392588B2

JP7392588B2 - vehicle door structure

Info

Publication number: JP7392588B2
Application number: JP2020108586A
Authority: JP
Inventors: 淳平金澤; 和秀土屋; 雄亮平田; クマールシャルマカムレッシュ
Original assignee: Suzuki Motor Corp
Current assignee: Suzuki Motor Corp
Priority date: 2020-06-24
Filing date: 2020-06-24
Publication date: 2023-12-06
Anticipated expiration: 2040-06-24
Also published as: JP2022006392A

Description

本発明は、車両用ドア構造に関し、特に、車両の外部からドアに衝撃荷重を受けたときに、ドアの変形により生じることがあるラッチ機構のドア開動作の作動を規制する車両用ドア構造に関する。 The present invention relates to a vehicle door structure, and more particularly to a vehicle door structure that restricts the door opening operation of a latch mechanism that may occur due to deformation of the door when the door receives an impact load from the outside of the vehicle. .

この種の車両用ドア構造が特許文献１により提案されている。この文献１の車両用ドア構造は、車両の外部からドア本体に衝撃荷重が入力されたときに、ロッドの変位を規制する規制部材を備えている。この規制部材により、ドア本体に衝撃荷重が入力された場合でも、ロッドが下方に変位するのを規制して、ドア本体と車体との係合が解除されるのを防止する。 This type of vehicle door structure is proposed in Patent Document 1. The vehicle door structure of Document 1 includes a regulating member that regulates the displacement of the rod when an impact load is input to the door body from the outside of the vehicle. Even when an impact load is input to the door body, the regulating member restricts the rod from being displaced downward and prevents the door body from disengaging from the vehicle body.

この車両用ドア構造において規制部材は、ドア本体の幅方向においてロッド（例えば、実施形態におけるロッド１２）の下端部（例えば、実施形態における下端部１２ｂ）の直下を跨るように配置され、ロッドの下端部よりもドア本体の幅方向の一方側において、ドアアウタパネルに接続される接続部（例えば、実施形態における接続部５１）と、ロッドの下端部よりもドア本体の幅方向の他方側において、ロッドの下端部の最下点よりも上方に位置する変位規制部（例えば、実施形態における変位規制部５３）とを備え、変位規制部よりも下方に剥離部（例えば、実施形態における剥離部５９）を有している。 In this vehicle door structure, the regulating member is disposed so as to straddle the rod (eg, the rod 12 in the embodiment) directly below the lower end (eg, the lower end 12b in the embodiment) in the width direction of the door body. A connection part connected to the door outer panel (for example, the connection part 51 in the embodiment) on one side in the width direction of the door body than the lower end part, and on the other side in the width direction of the door body than the lower end part of the rod, A displacement regulating part (for example, the displacement regulating part 53 in the embodiment) located above the lowest point of the lower end of the rod, and a peeling part (for example, the peeling part 59 in the embodiment) located below the displacement regulating part. )have.

この規制部材では、変位規制部よりも下方に剥離部を有していることで、車両の外部からドア本体に衝撃荷重が入力され、ドアアウタパネルの変形に対応して接続部が移動すると、変位規制部よりも下方がドア本体のドアインナパネルから剥離して容易に移動する。これにより、ロッドの下端部の下方には、変位規制部が配置されるので、ロッドの下方への変位を規制することができる。したがって、車両の外部からドア本体に衝撃荷重を受けても、ドア本体が開状態となるのを防止することができる。 This regulation member has a peeling part below the displacement regulation part, so that when an impact load is input to the door body from the outside of the vehicle and the connection part moves in response to the deformation of the door outer panel, the displacement The portion below the regulating portion peels off from the door inner panel of the door body and easily moves. As a result, the displacement regulating portion is disposed below the lower end of the rod, so that the downward displacement of the rod can be regulated. Therefore, even if the door body receives an impact load from the outside of the vehicle, the door body can be prevented from opening.

特許第５９０９２２０号公報Patent No. 5909220

このように上記従来の車両用ドア構造は、車両の外部からドア本体に衝撃荷重が入力されたときに、規制部材の変位規制部をロッドの変位方向に変形させるようにしている。しかしながら、このような構造では、ロッドの変位量に対して変位規制部の位置が不正確になりやすく、ロッドと変位規制部との間の上下方向のクリアランスを十分に詰めることができず、ドア本体の開放を許してしまうおそれがある。 In this manner, the conventional vehicle door structure described above is configured to deform the displacement regulating portion of the regulating member in the direction of displacement of the rod when an impact load is input to the door body from the outside of the vehicle. However, with such a structure, the position of the displacement regulating part tends to be inaccurate with respect to the amount of displacement of the rod, and it is not possible to sufficiently reduce the vertical clearance between the rod and the displacement regulating part. There is a risk that the main body may be allowed to open.

本発明はこのような従来の問題を解決するものであり、この種の車両用ドア構造において、車両の側面衝突（以下、側突という。）時など車両の外部からドア本体に衝撃荷重を受けて、ドア本体が変形した場合に、ラッチ機構の解除（ラッチ機構によるドア開動作の作動）を規制して、ドア本体の開放を防止すること、を目的とする。 The present invention solves such conventional problems, and in this type of vehicle door structure, the door body receives an impact load from the outside of the vehicle, such as during a side collision (hereinafter referred to as a side collision). The object of the present invention is to prevent the door body from opening by regulating the release of the latch mechanism (operation of door opening operation by the latch mechanism) when the door body is deformed.

上記目的を達成するために、本発明は、
アウタパネル（１１）と縦壁部（１２２、１２４）、平面部（１２３）からなる段差部（１２Ａ）とを有するインナパネル（１２）とから構成されるドア本体（１）と、
前記アウタパネルのハンドル保持部（１１０）に取り付けられ、前記ハンドル保持部に保持され、操作可能なハンドル（２）と、
前記ドア本体内で前記インナパネルに設置され、車体側のストライカに噛合し、前記ドア本体を閉じた状態でドアをロックするラッチ機構（３）と、
前記ドア本体内で上端が前記ハンドルに接続され、下端が前記ラッチ機構に接続され、前記ハンドルの操作により上下方向に移動し、この上下方向の移動によって、前記ラッチ機構のロックを操作する接続ロッド（４）と、
前記ラッチ機構の下方で、前記インナパネルの前部と後部との間に配置されるドアビーム部材（７）と、
前記ドアビーム部材の前端部を前記インナパネルの前部に固定する前側保持ブラケット（５）と、
前記ドアビーム部材の後端部を前記インナパネルの後部に固定する後側保持ブラケット（６）とを備え、
前記後側保持ブラケット（６）の後側部（６１）が前記インナパネルの前記平面部に固定され、
前記後側保持ブラケットの前側部（６２）が前記平面部から前記インナパネルの内周上に突出されるように形成される車両用ドア構造において、
前記後側保持ブラケット（６）は、
前記前側部に形成され、前記ドアビーム部材の後端部を保持するドアビーム部材保持部（６２２）と、
前記後側部の上下に設けられ、前記後側保持ブラケットを前記インナパネルに接合するための複数の固定点（６１１）と、
前記前側部と前記後側部との間に前記後側部の複数の前記固定点を結ぶ仮想線に平行して上下方向に延び、前記前側部が変形可能となる変形容易部（６３）と、
前記前側部の上端部に形成されて当該上端部から車体幅方向内側に前記ラッチ機構に向けて延び、前記ラッチ機構のロック状態における前記接続ロッドの下端に対して下方で近接しかつ前記接続ロッドの下方で重ならない車体幅方向外側に隣接して配置されるロッド受け部（６４）と、
を備える、
ことを要旨とする。 In order to achieve the above object, the present invention
A door body (1) comprising an outer panel (11), an inner panel (12) having a stepped portion (12A) consisting of vertical wall portions (122, 124), and a flat portion (123);
a handle (2) attached to the handle holding part (110) of the outer panel, held by the handle holding part, and operable;
a latch mechanism (3) that is installed in the inner panel in the door body, engages with a striker on the vehicle body side, and locks the door with the door body closed;
a connecting rod within the door body, the upper end of which is connected to the handle, the lower end of which is connected to the latch mechanism, which moves vertically when the handle is operated, and which operates the lock of the latch mechanism by the vertical movement; (4) and
a door beam member (7) disposed below the latch mechanism and between the front and rear parts of the inner panel;
a front holding bracket (5) that fixes the front end of the door beam member to the front of the inner panel;
a rear holding bracket (6) for fixing a rear end portion of the door beam member to a rear portion of the inner panel;
A rear side part (61) of the rear side holding bracket (6) is fixed to the flat part of the inner panel,
In the vehicle door structure, the front side part (62) of the rear side holding bracket is formed so as to protrude from the flat part onto the inner periphery of the inner panel,
The rear holding bracket (6) is
a door beam member holding portion (622) formed on the front side portion and holding a rear end portion of the door beam member;
a plurality of fixing points (611) provided above and below the rear side portion for joining the rear side holding bracket to the inner panel;
an easily deformable part (63) extending between the front side part and the rear side part in a vertical direction parallel to an imaginary line connecting the plurality of fixing points of the rear side part, and allowing the front side part to be deformed; ,
The connecting rod is formed at the upper end of the front side portion, extends from the upper end inward in the vehicle width direction toward the latch mechanism, and is close to the lower end of the connecting rod when the latch mechanism is in the locked state, and the connecting rod a rod receiving part (64) disposed adjacent to the outside in the vehicle body width direction and not overlapping with each other below;
Equipped with
The gist is that.

本発明の車両用ドア構造によれば、車両の側突時など車両の外部からドア本体に衝撃荷重を受けて、ドア本体が変形した場合に、ラッチ機構の解除を規制して、ドア本体の開放を防止することができる、という本発明独自の格別な効果を奏する。 According to the vehicle door structure of the present invention, when the door body is deformed due to an impact load being applied to the door body from the outside of the vehicle such as during a side collision, the release of the latch mechanism is regulated and the door body is This invention has the unique and special effect of being able to prevent opening.

（ａ）本発明の一実施の形態に係る車両用ドア構造の全体構成を示すドア本体のアウタパネル側の側面図（ｂ）同車両用ドア構造の全体構成を示すドア本体のインナパネル側の側面図(a) Side view of the outer panel side of the door body showing the overall configuration of a vehicle door structure according to an embodiment of the present invention (b) Side view of the door body on the inner panel side showing the overall configuration of the vehicle door structure figure 同車両用ドア構造の要部の構成を示す一部断面正面図A partially sectional front view showing the configuration of the main parts of the door structure for the same vehicle. 同車両用ドア構造の要部の構成を示す側面図Side view showing the configuration of the main parts of the vehicle door structure 同車両用ドア構造の要部の構成を示す平面図A plan view showing the configuration of the main parts of the door structure for the same vehicle. 同車両用ドア構造の要部の構成を示す側面図Side view showing the configuration of the main parts of the vehicle door structure 同車両用ドア構造の要部の構成を示す平面図A plan view showing the configuration of the main parts of the door structure for the same vehicle. 同車両用ドア構造の要部の構成を示す斜視図A perspective view showing the configuration of the main parts of the vehicle door structure （ａ）同車両用ドア構造の側突前の状態を示す斜視図（ｂ）同車両用ドア構造の側突時の動作を示す斜視図(a) A perspective view showing the state of the door structure for the same vehicle before a side collision. (b) A perspective view showing the operation of the door structure for the same vehicle during a side impact.

図１に示すように、本発明の一実施の形態に係る車両用ドア構造は、ドア本体１内で上端がハンドル２に接続され、下端がラッチ機構３に接続され、ハンドル２の操作により上下方向に移動して、ラッチ機構３のロックを操作する接続ロッド４が、側突時に、下方へ移動するのを規制するドア開放防止構造を備える。このドア開放防止構造は、ラッチ機構３の下方でインナパネル１２後部の平面部１２３に固定され、ドアビーム部材７を保持する後側保持ブラケット６を用いて構成される。後側保持ブラケット６は、図３に示すように、前側部６２にドアビーム部材保持部６２２、後側部６１の上下に複数の固定点６１１、前側部６２と後側部６１との間に変形容易部６３、前側部６２の上端部にロッド受け部６４を備える。通常、ロッド受け部６４は、図２、図４に示すように、ラッチ機構３のロック状態における接続ロッド４の下端に対して下方で近接しかつ接続ロッド４の下方で重ならない車体幅方向外側に隣接して配置される。そして、側突時に、後側保持ブラケット６の前側部６２が変形容易部６３を起点に変形することにより、ロッド受け部６４が接続ロッド４の下側に移動して、このロッド受け部６４により接続ロッド４を受ける。このようにして車両の側突時など車両の外部からドア本体１に衝撃荷重を受けて、ドア本体１が変形した場合に、ラッチ機構３の解除を規制して、ドア本体１の開放を防止する。 As shown in FIG. 1, a vehicle door structure according to an embodiment of the present invention has an upper end connected to a handle 2 within a door body 1, a lower end connected to a latch mechanism 3, and a door structure that can be moved up or down by operating the handle 2. The door opening prevention structure is provided to prevent the connecting rod 4, which moves in the direction to operate the lock of the latch mechanism 3, from moving downward in the event of a side collision. This door opening prevention structure is configured using a rear holding bracket 6 that is fixed to a flat surface part 123 at the rear of the inner panel 12 below the latch mechanism 3 and holds the door beam member 7. As shown in FIG. 3, the rear side holding bracket 6 includes a door beam member holding portion 622 on the front side portion 62, a plurality of fixing points 611 above and below the rear side portion 61, and a deformable portion between the front side portion 62 and the rear side portion 61. A rod receiving part 64 is provided at the upper end of the easy part 63 and the front part 62. Normally, as shown in FIGS. 2 and 4, the rod receiving portion 64 is located downwardly close to the lower end of the connecting rod 4 when the latch mechanism 3 is in the locked state, and does not overlap with the lower end of the connecting rod 4 on the outside in the vehicle body width direction. placed adjacent to. In the event of a side collision, the front part 62 of the rear holding bracket 6 deforms from the easily deformable part 63, and the rod receiving part 64 moves below the connecting rod 4. Receives the connecting rod 4. In this way, when the door body 1 is deformed due to an impact load being applied to the door body 1 from the outside of the vehicle, such as during a side collision, the release of the latch mechanism 3 is regulated and the opening of the door body 1 is prevented. do.

図１、図２に示すように、本発明の一実施の形態に係る車両用ドア構造は、ドア本体１と、ハンドル２と、ラッチ機構３と、接続ロッド４と、ドアビーム部材７と、前側保持ブラケット５及び後側保持ブラケット６とを備えて構成される。 As shown in FIGS. 1 and 2, a vehicle door structure according to an embodiment of the present invention includes a door body 1, a handle 2, a latch mechanism 3, a connecting rod 4, a door beam member 7, and a front side It is comprised of a holding bracket 5 and a rear holding bracket 6.

ドア本体１はアウタパネル１１と縦壁部１２２、１２４、平面部１２３からなる段差部１２Ａとを有するインナパネル１２とから構成される。 The door body 1 is composed of an outer panel 11 and an inner panel 12 having a stepped portion 12A consisting of vertical wall portions 122, 124 and a flat portion 123.

ハンドル２はアウタパネル１１のハンドル保持部１１０に取り付けられ、ハンドル保持部１１０に保持され、操作可能になっている。 The handle 2 is attached to a handle holding part 110 of the outer panel 11, is held by the handle holding part 110, and is operable.

ラッチ機構３はドア本体１内でインナパネル１２に設置され、車体側のストライカ（図示省略）に噛合し、ドア本体１を車体ドア枠Ｂ１に閉じた状態でドア本体１をロックする。 The latch mechanism 3 is installed in the inner panel 12 within the door body 1, engages with a striker (not shown) on the vehicle body side, and locks the door body 1 in a state in which the door body 1 is closed to the vehicle body door frame B1.

接続ロッド４は、ドア本体１内で上端がハンドル２に接続され、下端がラッチ機構３に接続され、ハンドル２の操作により上下方向に移動し、この上下方向の移動によって、ラッチ機構３のロックを操作する。この場合、接続ロッド４は、ハンドル２の操作により下方に移動されると、ラッチ機構３のロック（ドア本体１と車体ドア枠Ｂ１とのロック）を解除する。 The connecting rod 4 has an upper end connected to the handle 2 and a lower end connected to the latch mechanism 3 within the door body 1, and moves vertically by operating the handle 2, and locks the latch mechanism 3 by this vertical movement. operate. In this case, when the connecting rod 4 is moved downward by operating the handle 2, it unlocks the latch mechanism 3 (the lock between the door body 1 and the vehicle door frame B1).

ドアビーム部材７は、ラッチ機構３の下方で、インナパネル１２の前部と後部との間に配置される。 The door beam member 7 is disposed below the latch mechanism 3 and between the front and rear portions of the inner panel 12.

前側保持ブラケット５は、ドアビーム部材７の前端部をインナパネル１２の前部に固定する。後側保持ブラケット６は、ドアビーム部材７の後端部をインナパネル１２の後部に固定する。このドア構造では、後側保持ブラケット６の後側部６１がインナパネル１２の平面部１２３に固定され、後側保持ブラケット６の前側部６２が平面部１２３からインナパネル１２の内周上に突出されるように形成される。しかしてドアビーム部材７は、ラッチ機構３の下方で、前端部がインナパネル１２の前部に前側保持ブラケット５を介して固定され、後端部がインナパネル１２の後部に後側保持ブラケット６を介して固定されて、インナパネル１２の前部、後部間に架け渡し配置される。 The front holding bracket 5 fixes the front end of the door beam member 7 to the front of the inner panel 12. The rear holding bracket 6 fixes the rear end of the door beam member 7 to the rear of the inner panel 12. In this door structure, the rear side part 61 of the rear side holding bracket 6 is fixed to the flat part 123 of the inner panel 12, and the front side part 62 of the rear side holding bracket 6 protrudes from the flat part 123 onto the inner periphery of the inner panel 12. formed to be The door beam member 7 has a front end fixed to the front of the inner panel 12 via the front holding bracket 5 below the latch mechanism 3, and a rear end fixed to the rear of the inner panel 12 via the rear holding bracket 6. The inner panel 12 is fixed therebetween, and is arranged to span between the front and rear parts of the inner panel 12.

そして、この車両用ドア構造では、後側保持ブラケット６は、図３に示すように、ドアビーム部材保持部６２２と、複数の固定点６１１と、変形容易部６３と、ロッド受け部６４とを備えて構成される。 In this vehicle door structure, the rear holding bracket 6 includes a door beam member holding part 622, a plurality of fixing points 611, an easily deformable part 63, and a rod receiving part 64, as shown in FIG. It consists of

ドアビーム部材保持部６２２は前側部６２に形成され、ドアビーム部材７の後端部を保持する。 The door beam member holding portion 622 is formed on the front side portion 62 and holds the rear end portion of the door beam member 7.

複数の固定点６１１は後側部６１の上下に設けられ、後側保持ブラケット６２をインナパネル１２に接合する。 A plurality of fixing points 611 are provided on the upper and lower sides of the rear side portion 61 to join the rear retaining bracket 62 to the inner panel 12.

変形容易部６３は前側部６２と後側部６１との間に後側部６１の複数の固定点６１１を結ぶ仮想線に平行して上下方向に延び、前側部６２が変形可能となる。この変形容易部６３は前側部６２を変形させるきっかけとなるように変形を容易にしてある。 The easily deformable portion 63 extends vertically between the front side portion 62 and the rear side portion 61 in parallel to an imaginary line connecting the plurality of fixing points 611 of the rear side portion 61, and allows the front side portion 62 to be deformed. The easily deformable portion 63 is designed to facilitate deformation so as to trigger the deformation of the front side portion 62.

ロッド受け部６４は前側部６２の上端部に形成され、この上端部から車体幅方向内側にラッチ機構３に向けて延び、ラッチ機構３のロック状態における接続ロッド４の下端に対して下方で近接しかつ接続ロッド４の下方で重ならない車体幅方向外側に隣接して配置される。 The rod receiving part 64 is formed at the upper end of the front side part 62, extends from this upper end inward in the vehicle width direction toward the latch mechanism 3, and is close to the lower end of the connecting rod 4 when the latch mechanism 3 is in the locked state. Moreover, it is disposed below the connecting rod 4 and adjacent to the outer side in the vehicle body width direction without overlapping.

このようにして、ドア本体１に衝撃荷重を受けたときに、後側保持ブラケット６の前側部６２の変形により、ロッド受け部６４が接続ロッド４の下側に移動して、このロッド受け部６４により接続ロッド４の下方への移動を規制する。 In this way, when the door body 1 receives an impact load, the rod receiving portion 64 moves to the lower side of the connecting rod 4 due to the deformation of the front side portion 62 of the rear side holding bracket 6, and this rod receiving portion 64 restricts downward movement of the connecting rod 4.

一般の車両用ドア構造においては、側突によりドア本体の中央部などに車体内側方向の衝撃荷重が加えられた場合、アウタパネルが変形してハンドル保持部が歪むことで、ハンドルがドア本体の開放操作方向となる外側に動き、接続ロッドが下方に押されることがある。このような場合、接続ロッドの下方への移動により、ラッチ機構のロックが解除され、ドア本体が開放されることが起こることがある。これに対して、この車両用ドア構造では、後側保持ブラケット６の後側部６１と前側部６２との間の変形容易部６３と前側部６２上端のロッド受け部６４とにより、接続ロッド４の下方への移動を規制することができる。すなわち、変形容易部６３は後側保持ブラケット６の後側部６１と前側部６２との間に後側部６１の複数の固定点６１１を結ぶ仮想線に平行して上下方向に延びている。ロッド受け部６４は前側部６２の上端部から車体幅方向内側にラッチ機構３に向けて延び、通常時は、接続ロッド４の下端に対して下方で近接しかつ接続ロッド４の下端に対して下方に重ならない車体幅方向外側に隣接する位置に配置される。しかしてドア本体１に車体内側方向の衝撃荷重が加えられて、これがドアビーム部材７に入力されると、変形容易部６３を起点に、前側部６２が車体幅方向内側に変形し移動する。この前側部６２の変形、移動により、ロッド受け部６４が通常時の位置から、車体幅方向内側へラッチ機構３に向けて移動し、接続ロッド４の下端に対して下方で近接しかつ接続ロッド４の下端に対して下方に重なる位置へ移動される。このロッド受け部６４が接続ロッド４の下端の下側に移動することで、このロッド受け部６４の干渉により接続ロッド４の下方への移動が規制される。なお、後側保持ブラケット６に車体内側方向への荷重が直接加えられない場合でも、側突時に、ロッド受け部６４は接続ロッド４の下端の下側に移動され、接続ロッド４の移動が阻止される。したがって、ラッチ機構３のロック解除が防止され、車体ドア枠Ｂ１からのドア本体１の開放を防ぐことができる。また、この車両用ドア構造のドア開放防止構造によると、ラッチ機構３によりドア本体１が閉状態にロックされた状態での接続ロッド４の下端とロッド受け部６４との間の上下方向のクリアランスを小さくすることができ、接続ロッド４の下端の下方への移動に対して遊びを削減することができる。これにより、このドア開放防止構造による動作をタイムラグをより少なくしかつ確実に実行させることができる。 In general vehicle door structures, when an impact load is applied inward to the center of the door body due to a side collision, the outer panel deforms and the handle holding part is distorted, causing the handle to open the door body. Moving outward, which is the direction of operation, the connecting rod may be pushed downwards. In such cases, downward movement of the connecting rod may cause the latch mechanism to unlock and the door body to open. On the other hand, in this vehicle door structure, the connecting rod 4 The downward movement of can be regulated. That is, the easily deformable portion 63 extends in the vertical direction between the rear side portion 61 and the front side portion 62 of the rear side holding bracket 6 in parallel to an imaginary line connecting the plurality of fixing points 611 of the rear side portion 61. The rod receiving part 64 extends inward in the vehicle width direction from the upper end of the front side part 62 toward the latch mechanism 3, and is normally close to the lower end of the connecting rod 4 at a lower position. It is located adjacent to the outside in the width direction of the vehicle body and does not overlap downward. When an impact load is applied to the door body 1 in the inward direction of the vehicle body and is input to the door beam member 7, the front side portion 62 deforms and moves inward in the vehicle width direction starting from the easily deformable portion 63. Due to this deformation and movement of the front side part 62, the rod receiving part 64 moves from the normal position toward the latch mechanism 3 inward in the vehicle width direction, approaches the lower end of the connecting rod 4 downwardly, and the connecting rod It is moved to a position that overlaps the lower end of 4. By moving the rod receiving portion 64 below the lower end of the connecting rod 4, the downward movement of the connecting rod 4 is restricted due to the interference of the rod receiving portion 64. Note that even if no load is directly applied to the rear side holding bracket 6 in the inward direction of the vehicle body, in the event of a side collision, the rod receiving portion 64 is moved to the lower side of the lower end of the connecting rod 4, and movement of the connecting rod 4 is prevented. be done. Therefore, unlocking of the latch mechanism 3 is prevented, and opening of the door body 1 from the vehicle door frame B1 can be prevented. Further, according to the door opening prevention structure of this vehicle door structure, there is a vertical clearance between the lower end of the connecting rod 4 and the rod receiving part 64 when the door body 1 is locked in the closed state by the latch mechanism 3. can be made small, and the play with respect to the downward movement of the lower end of the connecting rod 4 can be reduced. Thereby, the operation of the door opening prevention structure can be performed reliably with less time lag.

この車両用ドア構造において、後側保持ブラケット６の変形容易部６３は、図５、図６に示すように、前側部６２と後側部６１との間で少なくともドアビーム部材保持部６２２の上下の位置に後側部６１の複数の固定点６１１を結ぶ仮想線に沿って、前側部６２が後側部６１に対して車体幅方向外側に突出する段差形状に形成され、前側部６２とインナパネル１２との間に所定の隙間を有する段差形状が形成されている。 In this vehicle door structure, as shown in FIGS. 5 and 6, the easily deformable portion 63 of the rear side holding bracket 6 is located between the front side portion 62 and the rear side portion 61 at least on the upper and lower sides of the door beam member holding portion 622. The front side part 62 is formed in a stepped shape that protrudes outward in the vehicle width direction with respect to the rear side part 61 along an imaginary line connecting the plurality of fixing points 611 of the rear side part 61, and the front side part 62 and the inner panel 12, a stepped shape having a predetermined gap is formed.

若干補足すると、変形容易部６３は、図５に示すように、後側部６１と前側部６２との間に少なくともドアビーム部材保持部６２２の上下の位置に後側部６１の複数の固定点６１１を結ぶ仮想線に沿って曲面形状の回り込み部を形成して設けられる。この変形容易部６３が段差部となって、図６に示すように、前側部６２は後側部６１に対して車体幅方向外側に突出する段差形状を呈し、前側部６２とインナパネル１２との間に所定のクリアランスを有している。 To add a little bit, the easily deformable part 63 has a plurality of fixing points 611 on the rear side part 61 at least at positions above and below the door beam member holding part 622 between the rear side part 61 and the front side part 62, as shown in FIG. A curved wrap-around portion is formed along an imaginary line connecting the two. This easily deformable portion 63 becomes a stepped portion, and as shown in FIG. There is a predetermined clearance between them.

このように後側保持ブラケット６の上下方向に延びる変形容易部６３に曲面形状の回り込み部を形成し、この変形容易部６３を段差部としてある。このようにしたことで、後側保持ブラケット６を車体幅方向以外の方向へ変形させようとする荷重に対してこの後側保持ブラケット６の剛性を高め、ドア本体１の側突時に前側部６２を車体内側へ確実に変形させることができる。これにより、ロッド受け部６４を接続ロッド４の下端の下方へ確実に移動することができる。また、変形容易部６３を段差部とし、前側部６２を後側部６１に対して車体幅方向外側に突出する段差形状にして、前側部６２とインナパネル１２との間に所定のクリアランスを確保している。このようにしたことで、ドア本体１の変形時に、後側保持ブラケット６とインナパネル１２との干渉を低減することができる。これにより、側突時に後側保持ブラケット６の車体幅方向内側への変形を確実に生じさせることができる。さらに、変形容易部６３をドアビーム部材保持部６２２の上下の位置で曲面形状の回り込み部にすることにより、前側部６２の上部、下部をそれぞれ後側部６１に対して車体幅方向外側に突出する段差形状にしてある。このようにしたことで、前側部６２のドアビーム部材保持部６２２に固定されるドアビーム部材７の後端部に上下少なくとも一方の変形容易部６３から延びる延長線が一部重なる構成となる。これにより、ドアビーム部材７が保持される前側部６２の剛性が後側部６１に対して相対的に高くなる。この前側部６２と後側部６１との剛性差により、側突による衝撃荷重のドアビーム部材７への入力によって生じる、変形容易部６３を起点とする前側部６２の車体幅方向内側への変形を発生させやすくすることができる。 In this manner, the easily deformable portion 63 extending in the vertical direction of the rear holding bracket 6 is formed with a wraparound portion having a curved surface shape, and this easily deformable portion 63 is used as a stepped portion. By doing this, the rigidity of the rear side holding bracket 6 is increased against loads that try to deform the rear side holding bracket 6 in directions other than the vehicle width direction, and the front side part 6 can be reliably deformed to the inside of the vehicle body. Thereby, the rod receiving portion 64 can be reliably moved below the lower end of the connecting rod 4. In addition, the easily deformable portion 63 is made into a stepped portion, and the front side portion 62 is made into a stepped shape that protrudes outward in the vehicle width direction with respect to the rear side portion 61 to ensure a predetermined clearance between the front side portion 62 and the inner panel 12. are doing. By doing so, interference between the rear holding bracket 6 and the inner panel 12 can be reduced when the door body 1 is deformed. Thereby, it is possible to reliably cause the rear holding bracket 6 to deform inward in the vehicle width direction in the event of a side collision. Furthermore, by forming the easily deformable portion 63 into curved wrap-around portions at the upper and lower positions of the door beam member holding portion 622, the upper and lower portions of the front side portion 62 respectively protrude outward in the vehicle width direction with respect to the rear side portion 61. It has a stepped shape. By doing this, the extension line extending from at least one of the upper and lower deformable portions 63 partially overlaps the rear end portion of the door beam member 7 fixed to the door beam member holding portion 622 of the front side portion 62. Thereby, the rigidity of the front side part 62 where the door beam member 7 is held becomes relatively high with respect to the rear side part 61. This difference in rigidity between the front side part 62 and the rear side part 61 prevents the front side part 62 from deforming inward in the vehicle width direction starting from the easily deformable part 63, which is caused by the input of the impact load due to a side collision to the door beam member 7. This can be made easier to generate.

この車両用ドア構造において、後側保持ブラケット６は補強部材８を介してインナパネル１２に設置される。補強部材８は、図７に示すように、インナパネル１２の平面部１２３の形状に対応する補強平面部８１と、インナパネル１２の縦壁部１２４の形状に対応する補強縦壁部８２と、補強平面部８１と補強縦壁部８２との間に設けられる屈曲部８３とを有する。この補強部材８は、図２に示すように、補強平面部８１が後側保持ブラケット６の後側部６１の各固定点６１１でインナパネル１２の平面部１２３と接合され、補強平面部８１に対して補強縦壁部８２が屈曲部８３で車体幅方向内側に屈曲されてインナパネル１２の縦壁部１２４に沿って接合される。この場合、補強部材８の屈曲部８３と後側保持ブラケット６の変形容易部６３は側面視で一致し、後側保持ブラケット６の前側部６２の車体幅方向内側への変形に際して対応する。 In this vehicle door structure, the rear holding bracket 6 is installed on the inner panel 12 via a reinforcing member 8. As shown in FIG. 7, the reinforcing member 8 includes a reinforcing flat part 81 corresponding to the shape of the flat part 123 of the inner panel 12, a reinforcing vertical wall part 82 corresponding to the shape of the vertical wall part 124 of the inner panel 12, It has a bent part 83 provided between the reinforcing plane part 81 and the reinforcing vertical wall part 82. As shown in FIG. 2, this reinforcing member 8 has a reinforcing flat part 81 joined to a flat part 123 of the inner panel 12 at each fixing point 611 of the rear side part 61 of the rear holding bracket 6. On the other hand, the reinforcing vertical wall portion 82 is bent inward in the vehicle body width direction at the bending portion 83 and joined along the vertical wall portion 124 of the inner panel 12 . In this case, the bent portion 83 of the reinforcing member 8 and the easily deformable portion 63 of the rear holding bracket 6 coincide with each other in side view, and correspond when the front side portion 62 of the rear holding bracket 6 is deformed inward in the vehicle width direction.

この補強部材８によって、後側保持ブラケット６の固定点６１１が接合されるインナパネル１２の平面部１２３の車体幅方向内側への変形を抑え、前側部６２に設けられたロッド受け部６４の車体幅方向内側への移動、変形を確実に発生させることができる。 This reinforcing member 8 suppresses inward deformation of the flat part 123 of the inner panel 12 to which the fixing point 611 of the rear holding bracket 6 is joined, and prevents the rod receiving part 64 provided on the front part 62 from deforming inward in the vehicle body width direction. Movement and deformation inward in the width direction can be reliably caused.

また、この実施の形態の説明で用いる図は、この車両用ドア構造の各部を、それぞれの一例として、より具体的に示している。 Further, the figures used in the description of this embodiment more specifically show each part of this vehicle door structure as an example of each part.

図１に示すように、ドア本体１は車両のリア側のサイドドア用で、車体の外側に配設されるアウタパネル１１と車室側に配設されるインナパネル１２とにより形成される。アウタパネル１１の後部側で窓枠の下にハンドル保持部１１０が設けられる。 As shown in FIG. 1, the door body 1 is for a side door on the rear side of a vehicle, and is formed by an outer panel 11 disposed on the outside of the vehicle body and an inner panel 12 disposed on the side of the vehicle interior. A handle holding portion 110 is provided below the window frame on the rear side of the outer panel 11.

ドア操作用のハンドル２はアウタパネル１１のハンドル保持部１１０に取り付けられ、ハンドル２の裏面にハンドル２の操作により上下方向に揺動する揺動アーム２１（図２参照）が設けられる。揺動アーム２１の先端にはハンドル２の操作をラッチ機構３に伝達する接続ロッド４の上端部が接続される。接続ロッド４の下端部はアウタパネル１１側へ折り曲げられて、ラッチ機構３に作動連結されるレバー３１（図２参照）に接続される。 A handle 2 for operating the door is attached to a handle holding portion 110 of the outer panel 11, and a swing arm 21 (see FIG. 2) is provided on the back surface of the handle 2 to swing up and down when the handle 2 is operated. The upper end of a connecting rod 4 that transmits the operation of the handle 2 to the latch mechanism 3 is connected to the tip of the swing arm 21 . The lower end of the connecting rod 4 is bent toward the outer panel 11 and connected to a lever 31 (see FIG. 2) that is operatively connected to the latch mechanism 3.

ラッチ機構３はドア本体１内でインナパネル１２に取付金具を介して設置される。このラッチ機構３は周知のもので、ラッチ機構３の一部をなす噛合部（図示省略）が設けられ、車体ドア枠Ｂ１にはラッチ機構３の噛合部に噛合されるストライカ（図示省略）が取り付けられる。 The latch mechanism 3 is installed within the door body 1 on the inner panel 12 via a mounting bracket. This latch mechanism 3 is well known, and is provided with a meshing part (not shown) that forms a part of the latch mechanism 3, and a striker (not shown) that meshes with the meshing part of the latch mechanism 3 is provided on the vehicle door frame B1. It is attached.

接続ロッド４はドア本体１内で、上端部がハンドル２裏面の揺動アーム２１の先端に接続され、下端部はアウタパネル１１側に折り曲げられて、ラッチ機構３の一部をなすレバー３１に接続される。この接続ロッド４は、ハンドル２の開操作により、下方に変位されて、ラッチ機構３を作動させ、ドア本体１と車体ドア枠Ｂ１とのロックを解除する。 Inside the door body 1, the connecting rod 4 has an upper end connected to the tip of a swinging arm 21 on the back side of the handle 2, and a lower end bent toward the outer panel 11 and connected to a lever 31 forming a part of the latch mechanism 3. be done. The connecting rod 4 is displaced downward by the opening operation of the handle 2, actuating the latch mechanism 3, and unlocking the door body 1 and the vehicle door frame B1.

ドアビーム部材７は、断面が円形のビーム（パイプ）からなる。このドアビーム部材７は、ラッチ機構３の下方で、前端部がインナパネル１２の前部に前側保持ブラケット５を介して固定され、後端部がインナパネル１２の後部に後側保持ブラケット６を介して固定されて、インナパネル１２の前部、後部間に設置される。 The door beam member 7 consists of a beam (pipe) with a circular cross section. The door beam member 7 has a front end fixed to the front of the inner panel 12 via a front holding bracket 5 below the latch mechanism 3, and a rear end fixed to the rear of the inner panel 12 via a rear holding bracket 6. The inner panel 12 is fixed therebetween and installed between the front and rear parts of the inner panel 12.

この車両用ドア構造においては、図２に示すように、インナパネル１２の後部はインナパネル１２外周のアウタパネル１１との接合フランジ１２１からインナパネル１２の内周内側方向へ斜め上方に延びる複数の段差部１２Ａからなる。接合フランジ１２１側から順に第１縦壁部１２２、第１平面部１２３、第２縦壁部１２４、第２平面部１２５になっている。この場合、第１縦壁部１２２はインナパネル１２の外周の接合フランジ１２１からインナパネル１２の内周内側方向へ斜め上方に延びる。第１平面部１２３は第１縦壁部１２２から接合フランジ１２１と並列的に垂直方向に立ち上げられる。第２縦壁部１２４は第１平面部１２３からインナパネル１２の内周内側方向へ斜め上方に延びる。第２平面部１２５は第２縦壁部１２４から接合フランジ１２１と並列的に垂直方向に立ち上げられる。なお、接続ロッド４の下端は上面視でインナパネル１２の後部の第２縦壁部１２４上で第１平面部１２３寄りの位置に配置される。
後側保持ブラケット６は、このインナパネル１２の後部に、補強部材８を介して、取り付けられる。 In this vehicle door structure, as shown in FIG. 2, the rear part of the inner panel 12 has a plurality of steps extending diagonally upward from the joint flange 121 on the outer periphery of the inner panel 12 with the outer panel 11 toward the inner periphery of the inner panel 12. It consists of part 12A. The first vertical wall part 122, the first flat part 123, the second vertical wall part 124, and the second flat part 125 are arranged in order from the joining flange 121 side. In this case, the first vertical wall portion 122 extends obliquely upward from the joining flange 121 on the outer periphery of the inner panel 12 toward the inner side of the inner periphery of the inner panel 12 . The first plane portion 123 is vertically raised from the first vertical wall portion 122 in parallel with the joining flange 121 . The second vertical wall portion 124 extends obliquely upward from the first plane portion 123 toward the inner circumference of the inner panel 12 . The second plane portion 125 is vertically raised from the second vertical wall portion 124 in parallel with the joining flange 121 . Note that the lower end of the connecting rod 4 is disposed on the second vertical wall portion 124 at the rear of the inner panel 12 at a position closer to the first plane portion 123 when viewed from above.
The rear holding bracket 6 is attached to the rear part of the inner panel 12 via a reinforcing member 8.

図５に示すように、後側保持ブラケット６は、インナパネル１２の第１平面部１２３の所定の範囲の形状に対応する帯状の後側部６１と、この後側部６１の前縁部から前側へ所定幅まで延出される前側部６２とを備える。そして、後側部６１に複数の固定点６１１が設けられる。後側部６１と前側部６２との間でドアビーム部材保持部６２２の上下に変形容易部６３が設けられる。前側部６２の上下方向中間部にドアビーム部材保持部６２２、上端部にロッド受け部６４が、それぞれ、設けられる。 As shown in FIG. 5, the rear holding bracket 6 includes a band-shaped rear side portion 61 corresponding to the shape of a predetermined range of the first plane portion 123 of the inner panel 12, and a front edge portion of the rear side portion 61. It includes a front side portion 62 that extends forward to a predetermined width. A plurality of fixing points 611 are provided on the rear side portion 61. Easily deformable portions 63 are provided above and below the door beam member holding portion 622 between the rear side portion 61 and the front side portion 62. A door beam member holding portion 622 is provided at the vertically intermediate portion of the front side portion 62, and a rod receiving portion 64 is provided at the upper end portion.

この場合、後側保持ブラケット６は後側部６１、前側部６２を含む全体として、上部及び下部がそれぞれ、平板状に形成され、上下方向中間部は断面略Ｍ字形に形成されて中間部に断面半円形の溝が設けられる。そして、上部及び下部の前後方向中間部に車体幅方向外側に向けて凸の曲面状の回り込み部（Ｒ又は稜線）が形成されて段差部が設けられる。この段差部を境に後側一方が後側部６１、前側他方が前側部６２をなす。後側部６１の上部、下部に複数の固定点６０１が設けられる。前側部６２の上端部にこの上端部６２から車体幅方向内側に向けて延びる平板部が一体に形成される。このようにして後側部６１が固定部に、後側部６１と前側部６２との間の段差部が変形容易部６３に、後側部６１の上部、下部に対して前側部６２の上部、下部が車体幅方向外側に向けて突出する段差形状部になっている。そして、前側部６２の上端部の平板部がロッド受け部６４、前側部中間の溝がドアビーム部材保持部６２２になっている。なお、ロッド受け部６４で接続ロッド４を受けたときにこのロッド受け部６４が変形してドア本体１が開放されないように、後側保持ブラケット６の板厚は最適にしてある。 In this case, the rear side holding bracket 6 as a whole, including the rear side part 61 and the front side part 62, has an upper and a lower part each formed into a flat plate shape, and an intermediate part in the vertical direction is formed into a substantially M-shaped cross section. A groove having a semicircular cross section is provided. Further, a curved wraparound portion (R or ridge line) that is convex toward the outside in the width direction of the vehicle body is formed at an intermediate portion in the front-rear direction of the upper and lower portions, thereby providing a stepped portion. With this step as a boundary, one rear side forms a rear side part 61, and the other front side forms a front side part 62. A plurality of fixing points 601 are provided at the upper and lower portions of the rear side portion 61. A flat plate portion extending inward in the vehicle width direction from the upper end portion 62 is integrally formed at the upper end portion of the front side portion 62. In this way, the rear side part 61 becomes a fixed part, the step part between the rear side part 61 and the front side part 62 becomes an easily deformable part 63, and the upper part of the front part 62 , the lower part is a step-shaped part that protrudes outward in the vehicle width direction. The flat plate portion at the upper end of the front side portion 62 serves as a rod receiving portion 64, and the groove in the middle of the front side portion serves as a door beam member holding portion 622. The plate thickness of the rear holding bracket 6 is optimized so that when the rod receiving part 64 receives the connecting rod 4, the rod receiving part 64 is not deformed and the door body 1 is not opened.

図７に示すように、補強部材８は、インナパネル１２の第１平面部１２３の形状に対応する補強平面部８１と、補強平面部８１に対して屈曲部８３を介して屈曲され、インナパネル１２の第２縦壁部１２４の形状に対応する補強縦壁部８２とからなる。また、この補強部材８には補強平面部８１側から車体幅方向内側に向けてビード形状８４が追加的に付けられる。この補強部材８は補強平面部８１が後側保持ブラケット６の後側部６１の各固定点６１１でインナパネル１２の第１平面部１２３に共止めされる。そして、屈曲部８３がインナパネル１２の第１平面部１２３と第２縦壁部１２４との間の角部に沿って屈曲されて補強縦壁部８２はインナパネル１２の第２縦壁部１２４に沿って接合される。この補強部材８は、後側保持ブラケット６の板厚の最適化に伴い、この後側保持ブラケット６とインナパネル１２との溶接が破損しないように、インナパネル１２に接合される。 As shown in FIG. 7, the reinforcing member 8 has a reinforcing plane part 81 corresponding to the shape of the first plane part 123 of the inner panel 12, and is bent with respect to the reinforcing plane part 81 through a bending part 83, and The reinforcing vertical wall portion 82 corresponds to the shape of the twelve second vertical wall portions 124. Further, a bead shape 84 is additionally formed on this reinforcing member 8 from the reinforcing plane portion 81 side toward the inside in the vehicle body width direction. The reinforcing flat portion 81 of this reinforcing member 8 is fixed to the first flat portion 123 of the inner panel 12 at each fixing point 611 of the rear side portion 61 of the rear holding bracket 6 . Then, the bent portion 83 is bent along the corner between the first plane portion 123 and the second vertical wall portion 124 of the inner panel 12, so that the reinforcing vertical wall portion 82 is connected to the second vertical wall portion 124 of the inner panel 12. are joined along the This reinforcing member 8 is joined to the inner panel 12 so that the welding between the rear side holding bracket 6 and the inner panel 12 is not damaged as the thickness of the rear side holding bracket 6 is optimized.

かくして、図２に示すように、後側保持ブラケット６は後側部６１が上下の複数の固定点６１１をインナパネル１２後部の第１平面部１２３に補強部材８の補強平面部８１を介して固定され、前側部６２は第１平面部１２３（補強平面部８１）に沿って立ち上げられる。そして、ロッド受け部６４が前側部６２の上端部からラッチ機構３方向に延び、ドア本体１の閉状態の接続ロッド４の下端に対して下方で近接しかつ下方で重ならない車体幅方向外側の位置に配置される。 Thus, as shown in FIG. 2, in the rear holding bracket 6, the rear side portion 61 connects the plurality of upper and lower fixing points 611 to the first flat portion 123 at the rear of the inner panel 12 via the reinforcing flat portion 81 of the reinforcing member 8. It is fixed, and the front side part 62 is raised along the first plane part 123 (reinforcement plane part 81). The rod receiving part 64 extends in the direction of the latch mechanism 3 from the upper end of the front side part 62, and is adjacent to the lower end of the connecting rod 4 of the door body 1 in the closed state at the lower side and is located on the outer side in the vehicle body width direction without overlapping with the lower end of the connecting rod 4 of the door body 1 in the closed state. placed in position.

図８にドア本体１に衝撃荷重を受けたときの後側保持ブラケット６上端部のロッド受け部６４の動作例を示している。図８（ａ）はドア本体１に衝撃荷重を受ける前の後側保持ブラケット６及びロッド受け部６４の状態を示している。図８（ａ）に示すように、ドア本体１に衝撃荷重を受ける前は、後側保持ブラケット６は変形前で、ロッド受け部６４が前側部６２の上端部から車体幅方向内側へラッチ機構３に向けて延び、ドア本体１の閉状態の接続ロッド４の下端に対して下方で近接しかつ上面視で下方で重ならない車体幅方向外側の位置に配置される。これがロッド受け部６４の通常時の位置となる。 FIG. 8 shows an example of the operation of the rod receiving portion 64 at the upper end of the rear holding bracket 6 when the door body 1 receives an impact load. FIG. 8(a) shows the state of the rear holding bracket 6 and the rod receiving portion 64 before the door body 1 receives an impact load. As shown in FIG. 8(a), before the door body 1 receives an impact load, the rear holding bracket 6 is not deformed, and the rod receiving part 64 is moved inward from the upper end of the front part 62 in the vehicle width direction into the latch mechanism. 3 and is disposed at a position on the outside in the width direction of the vehicle body, close to the lower end of the connecting rod 4 of the door body 1 in the closed state at the lower side, and not overlapping at the lower side when viewed from above. This is the normal position of the rod receiving portion 64.

図８（ｂ）にドア本体１に衝撃荷重を受けた後の後側保持ブラケット６及びロッド受け部６４の状態を示している。図８（ｂ）に示すように、ドア本体１に衝撃荷重を受けると、後側保持ブラケット６の前側部６２の変形により、ロッド受け部６４が接続ロッド４の下側に移動して、接続ロッド４の下方への移動を規制する。 FIG. 8(b) shows the state of the rear holding bracket 6 and the rod receiving portion 64 after the door body 1 receives an impact load. As shown in FIG. 8(b), when the door body 1 receives an impact load, the front part 62 of the rear holding bracket 6 deforms, and the rod receiving part 64 moves to the lower side of the connecting rod 4, causing the connection The downward movement of the rod 4 is restricted.

既述のとおり、この後側保持ブラケット６には後側部６１と前側部６２との間に後側部６１の複数の固定点６１１を結ぶ仮想線に平行して上下方向に延びる変形容易部６３が設けられている。これにより、ドア本体１内のドアビーム部材７に入力される車体内側方向の衝撃荷重によって、変形容易部６３を起点として、前側部６２の上部が車体内側方向に変形し移動する。この前側部６２上部の変形、移動により、前側部６２上端部のロッド受け部６４が通常時の位置から車体幅方向内側へラッチ機構３に向けて移動して、接続ロッド４の下端の下方に近接し、上面視で接続ロッド４の下端に重なる位置へ移動する。このロッド受け部６４により接続ロッド４の下方への移動が規制される。 As mentioned above, this rear holding bracket 6 has an easily deformable part that extends vertically between the rear side part 61 and the front side part 62 in parallel to the imaginary line connecting the plurality of fixing points 611 of the rear side part 61. 63 are provided. As a result, the upper part of the front part 62 deforms and moves inwardly of the vehicle body, starting from the easily deformable portion 63, due to the impact load inputted to the door beam member 7 in the door body 1 in the inward direction of the vehicle body. Due to this deformation and movement of the upper part of the front side part 62, the rod receiving part 64 at the upper end of the front side part 62 moves from its normal position inward in the vehicle body width direction toward the latch mechanism 3, and moves below the lower end of the connecting rod 4. It approaches and moves to a position overlapping the lower end of the connecting rod 4 when viewed from above. This rod receiving portion 64 restricts downward movement of the connecting rod 4.

例えば、側突によりドア本体１の中央部などに車体内側方向の衝撃荷重が加えられて、アウタパネル１１が変形してハンドル保持部１１０が歪み、ハンドル２がドア本体１の開放操作方向となる外側に動いて、接続ロッド４が下方に押された、とする。これに対して、後側保持ブラケット６は、衝撃荷重により、前側部６２上部が、変形容易部６３を起点として、車体内側方向に変形し移動する。この前側部６２上部の変形、移動とともに、前側部６２上端部のロッド受け部６４が通常時の位置から車体幅方向内側へラッチ機構３に向けて移動して、接続ロッド４が下方へ移動する前に又は移動と同時に、接続ロッド４の下端直下へ移動する。接続ロッド４は後側保持ブラケット６の固定点６１１に近い位置でロッド受け部６４により受けられ、下方への移動が規制される。この場合、側突時の衝撃荷重が後側保持ブラケット６に直接加えられなくても、前側部６２上端部が車体幅方向内側へ移動して、ロッド受け部６４が接続ロッド４の下端の直下に移動し、接続ロッド４の下方への移動が阻止される。したがって、ラッチ機構３の解除が防止され、ドア本体１の開放を防ぐ。また、この構造によると、ラッチ機構３によりドア本体１が閉状態にロックされる状態での接続ロッド４の下端とロッド受け部６４との間の上下方向のクリアランスを可及的に小さくすることができ、接続ロッド４の下端の下方への移動に対して遊びを削減できる。これにより、このドア開放防止構造による動作をタイムラグをより少なくしかつ確実に作動させることができる。 For example, due to a side collision, an impact load is applied to the center of the door body 1 in the inward direction of the vehicle body, the outer panel 11 is deformed, the handle holding part 110 is distorted, and the handle 2 is moved outward in the direction in which the door body 1 is opened. , and the connecting rod 4 is pushed downward. On the other hand, in the rear holding bracket 6, the upper part of the front side part 62 deforms and moves toward the inside of the vehicle body starting from the easily deformable part 63 due to the impact load. Along with this deformation and movement of the upper part of the front side part 62, the rod receiving part 64 at the upper end of the front side part 62 moves from the normal position inward in the vehicle width direction toward the latch mechanism 3, and the connecting rod 4 moves downward. Before or simultaneously with the movement, it moves directly below the lower end of the connecting rod 4. The connecting rod 4 is received by the rod receiving portion 64 at a position close to the fixing point 611 of the rear holding bracket 6, and its downward movement is restricted. In this case, even if the impact load at the time of a side collision is not directly applied to the rear holding bracket 6, the upper end of the front side part 62 moves inward in the vehicle width direction, and the rod receiving part 64 is placed directly below the lower end of the connecting rod 4. , and the downward movement of the connecting rod 4 is prevented. Therefore, the latch mechanism 3 is prevented from being released, and the door body 1 is prevented from being opened. Further, according to this structure, the vertical clearance between the lower end of the connecting rod 4 and the rod receiving part 64 when the door body 1 is locked in the closed state by the latch mechanism 3 can be made as small as possible. This makes it possible to reduce play in the downward movement of the lower end of the connecting rod 4. Thereby, the operation of the door opening prevention structure can be performed more reliably with less time lag.

以上説明したように、この車両用ドア構造によれば、既述のとおり、車両の側突時など車両の外部からドア本体１に衝撃荷重を受けて、ドア本体１が変形した場合に、ラッチ機構３の解除を規制して、ドア本体１の開放を防止することができる。そして、さらに次のような利点を有する。
（１）この構造では、インナパネル１２後部の第１平面部１２３に固定され、ドアビーム部材７を保持する後側保持ブラケット６の前側部６２の上端にロッド受け部６４を設けた。そして、側突時の衝撃荷重で直接押される前側部６２の変形、移動により、ロッド受け部６４が接続ロッド４の下に入り、このロッド受け部６４で接続ロッド４を受けるようにした。このようにしてロッド受け部６４が後側保持ブラケット６の固定点６１１に近い位置で接続ロッド４を受けるので、この前側部６２及びロッド受け部６４の動作精度を向上させることができる。また、ロッド受け部６４が後側保持ブラケット６の一部に一体に形成されるので、ロッド受け部６４を低コストに設けることができる。
（２）この構造では、ロッド受け部６４で接続ロッド４を受けたときにこのロッド受け部６４が変形してドア本体１が開放されないように、後側保持ブラケット６の板厚を最適にした。この後側保持ブラケット６の板厚の最適化に伴い、インナパネル１２の後部に補強部材８を設け、後側保持ブラケット６をこの補強部材８を介してインナパネル１２に取り付けた。このようにして後側保持ブラケット６とインナパネル１２との板厚差を減らすことで、後側保持ブラケット６とインナパネル１２との溶接部分の破損を抑えることができる。
（３）この構造では、補強部材８をインナパネル１２後部の平面部１２３に溶接により固定した。これにより、補強部材８の脱落を防ぐことができる。また、この補強部材８に衝突侵入方向にビード形状８４を追加した。これにより、補強部材８の変形を防ぎ、後側保持ブラケット６のロッド受け部６４を接続ロッド４の下に確実に潜り込ませることができる。
（４）この構造では、後側保持ブラケット６の取付位置周辺を補強し、後側保持ブラケット６の特定の箇所に剛性を持たせてもよい。このようにして、側突時に、ドア本体１の板厚が薄い部分からの変形を誘発し、後側保持ブラケット６及びロッド受け部６４それ自体の変形を抑えることで、ロッド受け部６４で接続ロッド４の下端をより確実に受けることができる。 As explained above, according to this vehicle door structure, when the door body 1 is deformed by receiving an impact load from the outside of the vehicle such as during a vehicle side collision, the latch It is possible to restrict release of the mechanism 3 and prevent the door body 1 from opening. Furthermore, it has the following advantages.
(1) In this structure, the rod receiving part 64 is provided at the upper end of the front part 62 of the rear holding bracket 6 which is fixed to the first flat part 123 at the rear of the inner panel 12 and holds the door beam member 7. The rod receiving part 64 enters under the connecting rod 4 due to the deformation and movement of the front side part 62 that is directly pushed by the impact load at the time of a side collision, and the connecting rod 4 is received by the rod receiving part 64. In this way, the rod receiving portion 64 receives the connecting rod 4 at a position close to the fixing point 611 of the rear side holding bracket 6, so that the operational accuracy of the front side portion 62 and the rod receiving portion 64 can be improved. Moreover, since the rod receiving part 64 is integrally formed with a part of the rear holding bracket 6, the rod receiving part 64 can be provided at low cost.
(2) In this structure, the thickness of the rear holding bracket 6 is optimized so that when the rod receiving part 64 receives the connecting rod 4, the rod receiving part 64 is deformed and the door body 1 is not opened. . In order to optimize the thickness of the rear holding bracket 6, a reinforcing member 8 was provided at the rear of the inner panel 12, and the rear holding bracket 6 was attached to the inner panel 12 via the reinforcing member 8. By reducing the difference in thickness between the rear holding bracket 6 and the inner panel 12 in this manner, damage to the welded portion between the rear holding bracket 6 and the inner panel 12 can be suppressed.
(3) In this structure, the reinforcing member 8 is fixed to the flat part 123 at the rear of the inner panel 12 by welding. Thereby, the reinforcing member 8 can be prevented from falling off. Further, a bead shape 84 is added to this reinforcing member 8 in the direction of collision entry. Thereby, deformation of the reinforcing member 8 can be prevented, and the rod receiving part 64 of the rear side holding bracket 6 can be reliably inserted under the connecting rod 4.
(4) In this structure, the area around the attachment position of the rear holding bracket 6 may be reinforced to provide rigidity to a specific location of the rear holding bracket 6. In this way, in the event of a side collision, deformation is induced from the thinner part of the door body 1, and deformation of the rear holding bracket 6 and the rod receiving part 64 itself is suppressed, thereby connecting the rod receiving part 64. The lower end of the rod 4 can be received more reliably.

なお、この実施の形態では、後側保持ブラケットの上部及び下部の前後方向中間部に車体幅方向外側に向けて凸の曲面状の回り込み部が付けられて段差部が設けられているが、上部、上下方向中間部（ドアビーム部材保持部）、及び下部の前後方向中間部に車体幅方向外側に向けて凸の曲面状の回り込み部が連続的に付けられて段差部が設けられてもよい。このようにして後側部と前側部との間の変形容易部を段差部とし、後側部の上部、上下方向中間部、及び下部に対して前側部の上部、上下方向中間部、及び下部を車体幅方向外側に向けて突出する段差形状部としてもよい。このようにしても上記実施の形態と同様の作用効果を奏することができる。 In addition, in this embodiment, a curved wrap-around part that is convex toward the outside in the width direction of the vehicle body is provided at the middle part in the longitudinal direction of the upper and lower parts of the rear side holding bracket to provide a step part. , a stepped portion may be provided in the vertically intermediate portion (the door beam member holding portion) and the longitudinally intermediate portion of the lower portion by continuously forming a curved wraparound portion that is convex toward the outside in the width direction of the vehicle body. In this way, the easily deformable part between the rear side part and the front side part is made into a step part, and the upper part, the vertical middle part, and the lower part of the front side part are may be a step-shaped portion that protrudes outward in the vehicle width direction. Even in this case, the same effects as those of the above embodiment can be achieved.

その他、本発明の趣旨を逸脱しない範囲で、上述した実施の形態における構成要素を周知の構成要素に置き換えることは適宜可能である。 In addition, it is possible to appropriately replace the components in the embodiments described above with well-known components without departing from the spirit of the present invention.

Ｂ１車体ドア枠
１ドア本体
１１アウタパネル
１１０ハンドル保持部
１２インナパネル
１２Ａ段差部
１２１接合フランジ
１２３平面部（第１平面部）
１２４縦壁部（第２縦壁部）
２ハンドル
３ラッチ機構
４接続ロッド
５前側保持ブラケット
６後側保持ブラケット
６１後側部
６１１固定点
６２前側部
６２２ドアビーム部材保持部
６３変形容易部
６４ロッド受け部
７ドアビーム部材
８補強部材
８１補強平面部
８２補強縦壁部
８３屈曲部 B1 Vehicle door frame 1 Door body 11 Outer panel 110 Handle holding part 12 Inner panel 12A Step part 121 Joint flange 123 Plane part (first plane part)
124 Vertical wall part (second vertical wall part)
2 Handle 3 Latch mechanism 4 Connecting rod 5 Front holding bracket 6 Rear holding bracket 61 Rear part 611 Fixing point 62 Front part 622 Door beam member holding part 63 Easily deformable part 64 Rod receiving part 7 Door beam member 8 Reinforcement member 81 Reinforcement flat part 82 Reinforced vertical wall portion 83 Bent portion

Claims

A door body (1) consisting of an outer panel (11), an inner panel (12) having a stepped portion (12A) consisting of vertical wall portions (122, 124), and a flat portion (123);
a handle (2) attached to the handle holding part (110) of the outer panel, held by the handle holding part, and operable;
a latch mechanism (3) that is installed in the inner panel in the door body, engages with a striker on the vehicle body side, and locks the door with the door body closed;
a connecting rod within the door body, the upper end of which is connected to the handle, the lower end of which is connected to the latch mechanism, which moves vertically when the handle is operated, and which operates the lock of the latch mechanism by the vertical movement; (4) and
a door beam member (7) disposed below the latch mechanism and between the front and rear parts of the inner panel;
a front holding bracket (5) that fixes the front end of the door beam member to the front of the inner panel;
a rear holding bracket (6) for fixing a rear end portion of the door beam member to a rear portion of the inner panel;
A rear side part (61) of the rear side holding bracket (6) is fixed to the flat part of the inner panel,
In the vehicle door structure, the front side part (62) of the rear side holding bracket is formed so as to protrude from the flat part onto the inner periphery of the inner panel,
The rear holding bracket (6) is
a door beam member holding portion (622) formed on the front side portion and holding a rear end portion of the door beam member;
a plurality of fixing points (611) provided above and below the rear side portion for joining the rear side holding bracket to the inner panel;
an easily deformable part (63) extending between the front side part and the rear side part in a vertical direction parallel to an imaginary line connecting the plurality of fixing points of the rear side part, and allowing the front side part to be deformed; ,
The connecting rod is formed at the upper end of the front side portion, extends from the upper end inward in the vehicle width direction toward the latch mechanism, and is close to the lower end of the connecting rod when the latch mechanism is in the locked state, and the connecting rod a rod receiving part (64) disposed adjacent to the outside in the vehicle body width direction and not overlapping with each other below;
Equipped with
A vehicle door structure characterized by:

The easily deformable portion (63) is formed between the front side portion and the rear side portion by a virtual line connecting the plurality of fixing points of the rear side portion at least at the upper and lower positions of the door beam member holding portion (622). The front side part is formed in a stepped shape protruding outward in the vehicle width direction with respect to the rear side part, and a stepped shape having a predetermined gap is formed between the front side part and the inner panel. The vehicle door structure according to claim 1.

The rear holding bracket is installed on the inner panel via a reinforcing member (8), and the reinforcing member (8) has a reinforcing flat part (81) corresponding to the shape of the flat part (123) of the inner panel. , a reinforcing vertical wall portion (82) corresponding to the shape of the vertical wall portion (124) of the inner panel, and a bent portion provided between the reinforcing plane portion (81) and the reinforcing vertical wall portion (82). (83), the reinforcing flat portion (81) is joined to the flat portion (123) of the inner panel at each of the fixing points of the rear side portion of the rear holding bracket, and the reinforcing flat portion According to claim 1 or 2, the reinforcing vertical wall portion (82) is bent inward in the vehicle width direction at the bending portion (83) and joined along the vertical wall portion (124) of the inner panel. Vehicle door structure described.