JP7064806B2 - Vehicle body rear structure - Google Patents

Vehicle body rear structure Download PDF

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JP7064806B2
JP7064806B2 JP2018059015A JP2018059015A JP7064806B2 JP 7064806 B2 JP7064806 B2 JP 7064806B2 JP 2018059015 A JP2018059015 A JP 2018059015A JP 2018059015 A JP2018059015 A JP 2018059015A JP 7064806 B2 JP7064806 B2 JP 7064806B2
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inner panel
vehicle
rear pillar
panel
reinforcing member
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JP2019171899A (en
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聡 渡邉
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Daihatsu Motor Co Ltd
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Description

本発明は、リヤピラーのインナパネルにシートベルトを支持するアンカー部を備える車両の車体後部構造に関する。 The present invention relates to a vehicle body rear structure including an anchor portion for supporting a seat belt on an inner panel of a rear pillar.

車両には、リヤピラーのインナパネルにシートベルト掛止用のアンカーが取り付けられたものがある（例えば、特許文献１）。車両の前面衝突などで車両が急停止すると、車両内の乗員に対して慣性力が作用し、乗員はシートから前方に移動しようとする。乗員がシートベルトによりシート上に拘束された状態であれば、上記慣性力が作用した場合でも、シートベルトによってシート上からの乗員の前方移動は阻止される。しかし、乗員に過大な慣性力が作用した場合、シートベルトが前方に大きく引っ張られる。この引張荷重によって、リヤピラーにおけるアンカーの取付箇所に応力が集中し、リヤピラーに断面崩れが生じ得る。リヤピラーに断面崩れが生じると、シートベルトによる乗員の拘束性能が低下する。 In some vehicles, an anchor for fastening a seat belt is attached to an inner panel of a rear pillar (for example, Patent Document 1). When the vehicle suddenly stops due to a frontal collision of the vehicle, inertial force acts on the occupants in the vehicle, and the occupants try to move forward from the seat. If the occupant is restrained on the seat by the seat belt, the seat belt prevents the occupant from moving forward from the seat even when the inertial force is applied. However, when an excessive inertial force acts on the occupant, the seat belt is pulled greatly forward. Due to this tensile load, stress is concentrated on the mounting location of the anchor in the rear pillar, and the cross section of the rear pillar may collapse. If the cross section of the rear pillar collapses, the occupant's restraint performance by the seat belt deteriorates.

特許文献１の技術では、車体の前後方向に延びるルーフサイドレールのインナパネルの後端部を下方に向けて延ばし、この延ばした延出部とリヤピラーのインナパネルとを重ね合わせて結合し、この重ね合わせた部分にシートベルト掛止用のアンカーを取り付けている。リヤピラーは、上記延出部が重ね合わされた領域が補強されるため、この補強部分にアンカーが取り付けられることで、大きな引張荷重でリヤピラーに断面崩れが生じることを抑制している。 In the technique of Patent Document 1, the rear end portion of the inner panel of the roof side rail extending in the front-rear direction of the vehicle body is extended downward, and the extended extending portion and the inner panel of the rear pillar are overlapped and joined. An anchor for fastening the seat belt is attached to the overlapped part. Since the rear pillar reinforces the area where the extension portions are overlapped with each other, the anchor is attached to this reinforcing portion to prevent the rear pillar from collapsing due to a large tensile load.

特開２０１１－２５８４９号公報Japanese Unexamined Patent Publication No. 2011-25849

特許文献１の技術では、乗員に過大な慣性力が作用した場合でも、シートベルトによる乗員の拘束性能を確保できるが、ルーフサイドレールのインナパネルを特殊な形状に延ばす必要があり、かつその延ばした延出部とリヤピラーのインナパネルとが重ね合わされた部分にアンカーを取り付ける必要があり、構造が複雑である。 In the technique of Patent Document 1, even when an excessive inertial force acts on the occupant, the restraining performance of the occupant by the seat belt can be ensured, but it is necessary to extend the inner panel of the roof side rail to a special shape and the extension thereof. The structure is complicated because it is necessary to attach an anchor to the part where the extension part and the inner panel of the rear pillar are overlapped.

リヤピラーの断面崩れを抑制する技術として、リヤピラーのインナパネルの板厚を厚くしたり、補強部材を多数設定したりすることが考えられるが、この場合、コストや重量が増加したり、生産性が悪化したりする。 As a technique for suppressing the cross-sectional collapse of the rear pillar, it is conceivable to increase the thickness of the inner panel of the rear pillar or set a large number of reinforcing members, but in this case, the cost and weight increase, and the productivity increases. It gets worse.

そこで、本発明の目的の一つは、簡易な構成で、乗員に過大な慣性力が作用した場合でも、シートベルトによる乗員の拘束性能を確保できる車両の車体後部構造を提供することにある。 Therefore, one of the objects of the present invention is to provide a vehicle body rear structure capable of ensuring the restraining performance of the occupant by the seat belt even when an excessive inertial force acts on the occupant with a simple configuration.

本発明の一態様に係る車両の車体後部構造は、
インナパネルと、前記インナパネルとの間に閉断面空間を形成するアウタパネルとを有するリヤピラーと、
前記インナパネルに取り付けられてシートベルトを支持するアンカー部と、
前記アウタパネルに直接的に接合される一端部と、前記インナパネルに直接的又は間接的に接合される他端部とを有し、前記閉断面空間内において前記アンカー部よりも車両後方側に配置され、前記リヤピラーに対するバックドア開閉補助用のステー部材の取付箇所を補強する補強部材とを備え、
前記アンカー部を基点とした前記シートベルトの引張方向を含んだ平面で前記リヤピラーの断面をとったとき、前記アンカー部と前記補強部材における前記一端部及び前記他端部とが前記平面上に位置する車両の車体後部構造。 The vehicle body rear structure according to one aspect of the present invention is
A rear pillar having an inner panel and an outer panel forming a closed cross-sectional space between the inner panel and the inner panel.
Anchor that is attached to the inner panel and supports the seat belt,
It has one end that is directly joined to the outer panel and the other end that is directly or indirectly joined to the inner panel, and is arranged on the rear side of the vehicle in the closed cross-sectional space. It is provided with a reinforcing member for reinforcing the attachment point of the stay member for assisting the opening and closing of the back door with respect to the rear pillar.
When the cross section of the rear pillar is taken on a plane including the tension direction of the seat belt with the anchor portion as a base point, the anchor portion and the one end portion and the other end portion of the reinforcing member are located on the plane. The rear structure of the vehicle body.

上記車両の車体後部構造は、車両の前面衝突などで乗員に過大な慣性力が作用し、シートベルトに大きな引張荷重が作用した場合でも、インナパネルに対するアンカー部の取付箇所を基点としたリヤピラーの断面崩れを抑制でき、シートベルトによる乗員の拘束性能の低下を抑制できる。上記車両の車体後部構造は、インナパネルに取り付けられるアンカー部を基点として、シートベルトの引張方向を含んだ平面でリヤピラーの断面をとったとき、アンカー部と補強部材における一端部及び他端部とが上記平面上に位置するため、インナパネルに対するアンカー部の取付箇所に応力が集中したとしても、その応力を補強部材に分散できるからである。また、上記車両の車体後部構造は、補強部材がアウタパネルに直接的に接合されているため、補強部材に分散された応力を更に効率的にアウタパネルに分散できるからである。 In the rear structure of the vehicle body, the rear pillar has a rear pillar structure based on the attachment point of the anchor part to the inner panel even when an excessive inertial force acts on the occupant due to a frontal collision of the vehicle and a large tensile load is applied to the seat belt. It is possible to suppress the collapse of the cross section, and it is possible to suppress the deterioration of the restraint performance of the occupant due to the seat belt. In the rear structure of the vehicle body of the vehicle, when the cross section of the rear pillar is taken on a plane including the tension direction of the seat belt with the anchor portion attached to the inner panel as a base point, the anchor portion and the one end portion and the other end portion of the reinforcing member are formed. Is located on the plane, so even if stress is concentrated at the attachment point of the anchor portion to the inner panel, the stress can be dispersed to the reinforcing member. Further, in the vehicle body rear structure of the vehicle, since the reinforcing member is directly joined to the outer panel, the stress dispersed in the reinforcing member can be more efficiently dispersed in the outer panel.

車両には、跳ね上げ式のバックドアを備える場合、バックドアの開閉操作を補助するステー部材が車幅方向の各端部に設けられる。ステー部材は、車体のバックドア開口部を形成するリヤピラーとバックドアとの間を架け渡すように設けられる。車両にステー部材を備える場合、一般的に、リヤピラーに対するステー部材の取付箇所に、この取付箇所を補強するための補強部材が設けられる。上記車両の車体後部構造は、この補強部材の配置を特定の位置とすることでリヤピラーの断面崩れを抑制しており、リヤピラーのインナパネルの板厚を厚くしたり、インナパネルに対するアンカー部の取付箇所を補強するための補強部材を別途設定したりしてインナパネルの強度や剛性を上げる必要がない。よって、上記車両の車体後部構造は、コスト・重量・生産性の点で有利である。 When the vehicle is provided with a flip-up back door, stay members that assist the opening / closing operation of the back door are provided at each end in the vehicle width direction. The stay member is provided so as to bridge between the rear pillar forming the back door opening of the vehicle body and the back door. When the vehicle is provided with a stay member, generally, a reinforcing member for reinforcing the mounting portion is provided at the mounting portion of the stay member with respect to the rear pillar. The rear structure of the vehicle body of the vehicle suppresses the cross-sectional collapse of the rear pillar by arranging the reinforcing member at a specific position, and the inner panel of the rear pillar is thickened or the anchor portion is attached to the inner panel. It is not necessary to separately set a reinforcing member to reinforce the part to increase the strength and rigidity of the inner panel. Therefore, the vehicle body rear structure of the vehicle is advantageous in terms of cost, weight, and productivity.

実施形態に係る車両の車体後部構造に備わるリヤピラーを車両内側から見た側面図である。It is a side view which looked at the rear pillar provided in the body rear structure of the vehicle which concerns on embodiment from the inside of a vehicle. 図１の（ＩＩ）－（ＩＩ）切断線で切断した断面図である。It is sectional drawing which cut at the (II)-(II) cutting line of FIG.

本発明の実施形態に係る車両の車体後部構造を、図１及び図２を参照して説明する。図１では、リヤピラーのインナパネルに取り付けられるアンカー部を省略している。図中の同一符号は同一名称物を示す。なお、以下の説明において、「前」、「後」、「右」、「左」、「上」、「下」とは、乗員がシートに着座した状態で車両進行方向にみたときの車両の正面を「前」とし、これを基準とする方向を意味し、図中、矢印ＦＲは車両前後方向の前側、矢印ＲＲは後側、矢印ＲＨは車両左右方向（車幅方向）右側、矢印ＬＨは左側、矢印ＵＰは車両上下方向の上側、矢印ＬＷＲは下側を示す。車体後部構造は、基本的に左右対称構造となっており、図１及び図２では、車体後部構造の右側部分のみを図示し、左側部分については図示を省略する。 The vehicle body rear structure according to the embodiment of the present invention will be described with reference to FIGS. 1 and 2. In FIG. 1, the anchor portion attached to the inner panel of the rear pillar is omitted. The same reference numerals in the figure indicate the same names. In the following explanation, "front", "rear", "right", "left", "top", and "bottom" refer to the vehicle when the occupant is seated on the seat and viewed in the vehicle traveling direction. The front is "front" and means the direction based on this. In the figure, the arrow FR is the front side in the front-rear direction of the vehicle, the arrow RR is the rear side, the arrow RH is the right side in the vehicle left-right direction (vehicle width direction), and the arrow LH. Indicates the left side, the arrow UP indicates the upper side in the vertical direction of the vehicle, and the arrow LWR indicates the lower side. The vehicle body rear structure is basically a symmetrical structure, and in FIGS. 1 and 2, only the right side portion of the vehicle body rear structure is shown, and the left side portion is omitted.

〔全体構成〕
実施形態に係る車両の車体後部構造１は、インナパネル１１及びアウタパネル１２を有するリヤピラー１０と、インナパネル１１に取り付けられるシートベルト係止用のアンカー部２０と、リヤピラー１０においてアンカー部２０よりも車両後方側に配置される補強部材３０とを備える。補強部材３０は、バックドア４の開閉操作を補助するステー部材２におけるリヤピラー１０に対する取付箇所を補強する部材である。実施形態に係る車両の車体後部構造１は、アンカー部２０を基点としたシートベルトの引張方向（図１及び図２に示す実線矢印の方向）を含んだ平面でリヤピラー１０の断面をとったとき、図２に示すように、アンカー部２０と補強部材３０における両端部（インナ側端部３１及びアウタ側端部３２）とが上記平面上に位置する点を特徴の一つとする。以下、まず車両の車体後部構造１の構成について説明し、その後に作用及び効果について説明する。 〔overall structure〕
The vehicle body rear structure 1 according to the embodiment includes a rear pillar 10 having an inner panel 11 and an outer panel 12, an anchor portion 20 for locking a seat belt attached to the inner panel 11, and a vehicle rather than an anchor portion 20 in the rear pillar 10. It includes a reinforcing member 30 arranged on the rear side. The reinforcing member 30 is a member that reinforces the attachment point to the rear pillar 10 in the stay member 2 that assists the opening / closing operation of the back door 4. When the vehicle body rear structure 1 according to the embodiment has a cross section of the rear pillar 10 on a plane including the tension direction of the seat belt (direction of the solid line arrow shown in FIGS. 1 and 2) with the anchor portion 20 as a base point. As shown in FIG. 2, one of the features is that the anchor portion 20 and both end portions (inner side end portion 31 and outer side end portion 32) of the reinforcing member 30 are located on the plane. Hereinafter, the configuration of the vehicle body rear structure 1 of the vehicle will be described first, and then the actions and effects will be described.

〔リヤピラー〕
リヤピラー１０は、車両の上下方向に延びて車体の後部外側部を構成する。左右のリヤピラー１０と、車両の前後方向に延びる一対の図示しないルーフサイドレール間に架け渡される図示しないルーフパネルと、ルーフパネルに対向配置される図示しないリヤパネルとでバックドア４の開口部が形成される。バックドア４は、跳ね上げ式であり、ルーフパネルの後端部にヒンジを介して取り付けられる。各リヤピラー１０の車両前方、かつルーフサイドレールの下方には、サイドドア５の開口部が形成される。 [Rear pillar]
The rear pillar 10 extends in the vertical direction of the vehicle to form a rear outer portion of the vehicle body. An opening of the back door 4 is formed by a roof panel (not shown) spanning between the left and right rear pillars 10, a pair of roof side rails (not shown) extending in the front-rear direction of the vehicle, and a rear panel (not shown) arranged opposite to the roof panel. Will be done. The back door 4 is a flip-up type and is attached to the rear end of the roof panel via a hinge. An opening of the side door 5 is formed in front of each rear pillar 10 and below the roof side rail.

リヤピラー１０は、図２に示すように、インナパネル１１と、インナパネル１１の車幅方向外方側に離間して配置され、インナパネル１１との間に閉断面空間１４を形成するアウタパネル１２とを備える。この例では、リヤピラー１０は、車両後方側でインナパネル１１とアウタパネル１２との間に介在されるバックドア開口パネル１３を備える。つまり、この例では、インナパネル１１と、アウタパネル１２と、バックドア開口パネル１３とで閉断面空間１４が形成されている。バックドア開口パネル１３は、車体の後端面を構成し、この後端面（外面）にバックドア４の開閉操作を補助するステー部材２がブラケット３を介して取り付けられる。リヤピラー１０は、図２に示すように、車両前方側でインナパネル１１とアウタパネル１２とが直接的に接合され、車両後方側でインナパネル１１とバックドア開口パネル１３とが直接的に接合されると共に、アウタパネル１２とバックドア開口パネル１３とが直接的に接合される。接合方法としては、例えばスポット溶接が挙げられる。 As shown in FIG. 2, the rear pillar 10 is arranged apart from the inner panel 11 on the outer side in the vehicle width direction of the inner panel 11 and has an outer panel 12 forming a closed cross-sectional space 14 between the inner panel 11 and the inner panel 11. To prepare for. In this example, the rear pillar 10 includes a back door opening panel 13 interposed between the inner panel 11 and the outer panel 12 on the rear side of the vehicle. That is, in this example, the closed cross-section space 14 is formed by the inner panel 11, the outer panel 12, and the back door opening panel 13. The back door opening panel 13 constitutes the rear end surface of the vehicle body, and a stay member 2 that assists the opening / closing operation of the back door 4 is attached to the rear end surface (outer surface) via the bracket 3. As shown in FIG. 2, in the rear pillar 10, the inner panel 11 and the outer panel 12 are directly joined to each other on the front side of the vehicle, and the inner panel 11 and the back door opening panel 13 are directly joined to each other on the rear side of the vehicle. At the same time, the outer panel 12 and the back door opening panel 13 are directly joined. Examples of the joining method include spot welding.

インナパネル１１には、後述するアンカー部２０が取り付けられる。インナパネル１１に対するアンカー部２０の取付箇所には、図１に示すように、座面１１０が設けられている。この例では、座面１１０からリヤピラー１０と図示しないルーフサイドレール及びルーフパネルとで形成される角部に向けて延びる補強ビード１１１を備える。上記角部は車両骨格として強固であるため、この角部に向けて補強ビード１１１を設けることで、インナパネル１１に対するアンカー部２０の取付箇所にかかる応力を上記角部に分散させてリヤピラー１０の断面崩れを抑制し易い。 An anchor portion 20, which will be described later, is attached to the inner panel 11. As shown in FIG. 1, a seat surface 110 is provided at a position where the anchor portion 20 is attached to the inner panel 11. In this example, a reinforcing bead 111 extending from the seat surface 110 toward a corner formed by a rear pillar 10 and a roof side rail and a roof panel (not shown) is provided. Since the corner portion is strong as a vehicle skeleton, by providing the reinforcing bead 111 toward the corner portion, the stress applied to the attachment portion of the anchor portion 20 with respect to the inner panel 11 is dispersed in the corner portion of the rear pillar 10. It is easy to suppress the collapse of the cross section.

〔アンカー部〕
アンカー部２０は、インナパネル１１に取り付けられて図示しないシートベルトを支持する。インナパネル１１の座面１１０に対応する閉断面空間１４側の面には、ナットプレート２１が接合されており、このナットプレート２１にアンカー部２０がボルト２２によりねじ結合される。 [Anchor part]
The anchor portion 20 is attached to the inner panel 11 and supports a seat belt (not shown). A nut plate 21 is joined to the surface of the inner panel 11 on the closed cross-section space 14 side corresponding to the seat surface 110, and the anchor portion 20 is screwed to the nut plate 21 by bolts 22.

〔補強部材〕
補強部材３０は、リヤピラー１０（この例ではバックドア開口パネル１３）に対するステー部材２の取付箇所（ブラケット３）を補強する部材である。ステー部材２は、リヤピラー１０とバックドア４との間を架け渡すように、上端部がリヤピラー１０（バックドア開口パネル１３）の上部に接合され、下端部がバックドア４のインナパネルに接合され、バックドア４の開閉操作を補助する部材である。ステー部材２は、例えば、シリンダと、シリンダ内に進退自在に挿入されたロッドとを備えるガスステーで構成される。ステー部材２とブラケット３との連結箇所は、図２の断面には表れていない。 [Reinforcing member]
The reinforcing member 30 is a member that reinforces the mounting portion (bracket 3) of the stay member 2 with respect to the rear pillar 10 (in this example, the back door opening panel 13). The stay member 2 has an upper end portion joined to the upper portion of the rear pillar 10 (back door opening panel 13) and a lower end portion joined to the inner panel of the back door 4 so as to bridge between the rear pillar 10 and the back door 4. , Is a member that assists the opening / closing operation of the back door 4. The stay member 2 is composed of, for example, a cylinder and a gas stay including a rod inserted into the cylinder so as to be able to advance and retreat. The connecting portion between the stay member 2 and the bracket 3 does not appear in the cross section of FIG.

補強部材３０は、バックドア開口パネル１３の上記取付箇所に対応する閉断面空間１４側の面に設けられている。補強部材３０は、アウタパネル１２に直接的に接合されるアウタ側端部３２と、インナパネル１１に直接的又は間接的に接合されるインナ側端部３１とを備える。この例では、補強部材３０のインナ側端部３１は、バックドア開口パネル１３に直接的に接合されており、インナパネル１１にはバックドア開口パネル１３を介して間接的に接合されている。補強部材３０は、インナパネル１１に直接的に接合されていてもよい。接合方法としては、例えばスポット溶接が挙げられる。 The reinforcing member 30 is provided on the surface of the back door opening panel 13 on the closed cross-sectional space 14 side corresponding to the mounting location. The reinforcing member 30 includes an outer side end portion 32 directly joined to the outer panel 12 and an inner side end portion 31 directly or indirectly joined to the inner panel 11. In this example, the inner side end portion 31 of the reinforcing member 30 is directly joined to the back door opening panel 13, and is indirectly joined to the inner panel 11 via the back door opening panel 13. The reinforcing member 30 may be directly joined to the inner panel 11. Examples of the joining method include spot welding.

補強部材３０は、アンカー部２０を基点としたシートベルトの引張方向（図１及び図２に示す実線矢印の方向）を含んだ平面でリヤピラー１０の断面をとったとき、アウタ側端部３２及びインナ側端部３１を含んで上記平面上に位置する。ここでのアンカー部２０の基点は、リヤピラー１０のインナパネル１１と、インナパネル１１にアンカー部２０を結合するボルト２２の中心軸との交点とする。アンカー部２０を基点としたシートベルトの引張方向を含んだ平面は、リヤピラー１０の上下方向に交差する平面である。また、上記平面は、水平面に対して非直交に交差する傾斜面であり、水平面との交差線が引張方向に直交する線となる平面である。補強部材３０は、上記平面上において、アウタ側端部３２及びインナ側端部３１を含んでアンカー部２０と同一平面上に位置する。シートベルトの引張方向は、乗員の大きさなどにより若干の範囲で変位し得る。ここで言うシートベルトの引張方向とは、アンカー部２０を基点としたリヤピラー１０のインナパネル１１の表面から車両内側かつ下方に向かい、シートに着座した乗員の前方への移動を阻止し得る一般的なシートベルトの動作時の引張方向のことである。補強部材３０は、この変位し得る範囲を考慮して、どの引張方向を含んだ平面でリヤピラー１０の断面をとっても、アウタ側端部３２及びインナ側端部３１を含んで上記平面上に位置するような大きさを有する。 When the reinforcing member 30 has a cross section of the rear pillar 10 on a plane including the tension direction of the seat belt (direction of the solid arrow shown in FIGS. 1 and 2) with the anchor portion 20 as the base point, the outer side end portion 32 and the reinforcing member 30 It is located on the plane including the inner side end portion 31. The base point of the anchor portion 20 here is the intersection of the inner panel 11 of the rear pillar 10 and the central axis of the bolt 22 that connects the anchor portion 20 to the inner panel 11. The plane including the tension direction of the seat belt with the anchor portion 20 as the base point is a plane that intersects the rear pillar 10 in the vertical direction. Further, the plane is an inclined plane that intersects the horizontal plane non-orthogonally, and the intersection line with the horizontal plane is a line orthogonal to the tensile direction. The reinforcing member 30 is located on the same plane as the anchor portion 20 including the outer side end portion 32 and the inner side end portion 31 on the above plane. The tension direction of the seat belt may be displaced within a slight range depending on the size of the occupant and the like. The tension direction of the seat belt referred to here is a general one that goes from the surface of the inner panel 11 of the rear pillar 10 with the anchor portion 20 as the base point to the inside and downward of the vehicle and can prevent the occupant seated in the seat from moving forward. It is the pulling direction when the seat belt is operating. In consideration of this displaceable range, the reinforcing member 30 is located on the plane including the outer side end portion 32 and the inner side end portion 31 regardless of the cross section of the rear pillar 10 in the plane including any tensile direction. It has such a size.

〔作用及び効果〕
車両の前面衝突などで乗員に過大な慣性力が作用し、シートベルトに大きな引張荷重が作用すると、インナパネル１１に対するアンカー部２０の取付箇所に応力が集中する。アンカー部２０を基点としたシートベルトの引張方向を含んだ平面でリヤピラー１０の断面をとったとき、補強部材３０のアウタ側端部３２及びインナ側端部３１が上記平面上に位置していないと、リヤピラー１０は、閉断面空間１４の図心Ｃを中心に上記引張方向側に回転するように変形し、断面崩れが生じる。一方、補強部材３０のアウタ側端部３２及びインナ側端部３１が上記平面上に位置していると、インナパネル１１に対するアンカー部２０の取付箇所に作用する応力は、補強部材３０に分散される。また、補強部材３０がアウタパネル１２に直接的に接合されていると、補強部材３０に分散された上記応力は、更にアウタパネルにまで分散される。実施形態に係る車両の車体後部構造１は、このようにインナパネル１１に対するアンカー部２０の取付箇所に作用する応力が補強部材３０及びアウタパネル１２に分散されることで、リヤピラー１０が、閉断面空間１４の図心Ｃを中心に上記引張方向側に回転するように変形することを抑制でき、断面崩れが生じることを抑制できる。リヤピラー１０の断面崩れを抑制できることで、シートベルトによる乗員の拘束性能を確保できる。 [Action and effect]
When an excessive inertial force acts on the occupant due to a frontal collision of the vehicle or the like and a large tensile load acts on the seat belt, the stress concentrates on the attachment portion of the anchor portion 20 with respect to the inner panel 11. When the cross section of the rear pillar 10 is taken on a plane including the tensile direction of the seat belt with the anchor portion 20 as a base point, the outer side end portion 32 and the inner side end portion 31 of the reinforcing member 30 are not located on the plane. Then, the rear pillar 10 is deformed so as to rotate in the tension direction side about the centroid C of the closed cross-sectional space 14, and the cross-sectional collapse occurs. On the other hand, when the outer side end portion 32 and the inner side end portion 31 of the reinforcing member 30 are located on the plane, the stress acting on the attachment portion of the anchor portion 20 with respect to the inner panel 11 is dispersed in the reinforcing member 30. To. Further, when the reinforcing member 30 is directly joined to the outer panel 12, the stress dispersed in the reinforcing member 30 is further dispersed in the outer panel. In the vehicle body rear structure 1 according to the embodiment, the stress acting on the attachment portion of the anchor portion 20 with respect to the inner panel 11 is dispersed in the reinforcing member 30 and the outer panel 12, so that the rear pillar 10 has a closed cross-sectional space. It is possible to suppress deformation so as to rotate in the tensile direction side around the center of gravity C of 14, and it is possible to suppress the occurrence of cross-sectional collapse. By suppressing the cross-sectional collapse of the rear pillar 10, it is possible to secure the restraining performance of the occupant by the seat belt.

車両に跳ね上げ式のバックドア４を備える場合、一般的に、バックドア４の開閉操作を補助するステー部材２がリヤピラー１０に取り付けられると共に、そのリヤピラー１０に対するステー部材２の取付箇所を補強するために、補強部材３０がリヤピラー１０の閉断面空間１４側に設けられる。上記車両の車体後部構造１は、一般的に設けられる補強部材３０の配置を特定の位置とすることでリヤピラー１０の断面崩れを抑制している。つまり、上記車両の車体後部構造１は、リヤピラー１０のインナパネル１１の板厚を厚くしたり、インナパネル１１に対するアンカー部２０の取付箇所を補強するための補強部材を別途設定したりしてインナパネル１１の強度や剛性を上げる必要がない。また、インナパネル１１に対するアンカー部２０の取付箇所に設けられる座面１１０や、ナットプレート２１を大きくする必要もない。よって、上記車両の車体後部構造１は、簡易な構成でリヤピラー１０の断面崩れを抑制でき、コスト・重量・生産性の点で有利である。上記座面１１０の大型化を抑制できることで、上記車両の車体後部構造１は、プリテンショナー付きシートベルトを好適に利用できる。 When the vehicle is provided with a flip-up back door 4, a stay member 2 that assists in opening and closing the back door 4 is generally attached to the rear pillar 10 and at the same time, the attachment portion of the stay member 2 to the rear pillar 10 is reinforced. Therefore, the reinforcing member 30 is provided on the closed cross-sectional space 14 side of the rear pillar 10. The vehicle body rear structure 1 of the vehicle suppresses the cross-sectional collapse of the rear pillar 10 by arranging the reinforcing member 30 which is generally provided at a specific position. That is, in the vehicle body rear structure 1 of the vehicle, the inner panel 11 of the rear pillar 10 is thickened, and a reinforcing member for reinforcing the attachment portion of the anchor portion 20 to the inner panel 11 is separately set. There is no need to increase the strength or rigidity of the panel 11. Further, it is not necessary to increase the size of the seat surface 110 or the nut plate 21 provided at the mounting location of the anchor portion 20 with respect to the inner panel 11. Therefore, the vehicle body rear structure 1 of the vehicle can suppress the cross-sectional collapse of the rear pillar 10 with a simple configuration, and is advantageous in terms of cost, weight, and productivity. By suppressing the increase in size of the seat surface 110, a seat belt with a pretensioner can be suitably used for the vehicle body rear structure 1 of the vehicle.

本発明はこれらの例示に限定されるものではなく、特許請求の範囲によって示され、特許請求の範囲と均等の意味及び範囲内でのすべての変更が含まれることが意図される。例えば、上述した実施形態において、リヤピラー１０のインナパネル１１とアウタパネル１２とは、バックドア開口パネル１３のような介在部材を介さずに、直接的に接合されていてもよい。この場合、補強部材３０は、アウタ側端部３２がアウタパネル１２に直接的に接合され、かつインナ側端部３１がインナパネル１１に直接的に接合される。 The present invention is not limited to these examples, and is indicated by the scope of claims, and is intended to include all modifications within the meaning and scope equivalent to the scope of claims. For example, in the above-described embodiment, the inner panel 11 and the outer panel 12 of the rear pillar 10 may be directly joined to each other without an intervening member such as the back door opening panel 13. In this case, in the reinforcing member 30, the outer side end portion 32 is directly joined to the outer panel 12, and the inner side end portion 31 is directly joined to the inner panel 11.

１ 車体後部構造
１０ リヤピラー
１１ インナパネル
１１０ 座面
１１１ 補強ビード
１２ アウタパネル
１３ バックドア開口パネル
１４ 閉断面空間
２０ アンカー部
２１ ナットプレート
２２ ボルト
３０ 補強部材
３１ インナ側端部
３２ アウタ側端部
２ ステー部材
３ ブラケット
４ バックドア
５ サイドドア 1 Rear pillar structure 10 Rear pillar 11 Inner panel 110 Seat surface 111 Reinforcing bead 12 Outer panel 13 Back door opening panel 14 Closed cross-section space 20 Anchor part 21 Nut plate 22 Bolt 30 Reinforcing member 31 Inner side end 32 Outer side end 2 Stay member 3 Bracket 4 Backdoor 5 Side door

Claims (1)

インナパネルと、前記インナパネルとの間に閉断面空間を形成するアウタパネルとを有するリヤピラーと、
前記インナパネルに取り付けられてシートベルトを支持するアンカー部と、
前記アウタパネルに直接的に接合される一端部と、前記インナパネルに直接的又は間接的に接合される他端部とを有し、前記閉断面空間内において前記アンカー部よりも車両後方側に配置され、前記リヤピラーに対するバックドア開閉補助用のステー部材の取付箇所を補強する補強部材とを備え、
前記アンカー部を基点とした前記シートベルトの引張方向を含んだ平面で前記リヤピラーの断面をとったとき、前記アンカー部と前記補強部材における前記一端部及び前記他端部とが前記平面上に位置し、かつ前記他端部が前記一端部よりも車両内側かつ車両前方に位置する、
車両の車体後部構造。 A rear pillar having an inner panel and an outer panel forming a closed cross-sectional space between the inner panel and the inner panel.
Anchor that is attached to the inner panel and supports the seat belt,
It has one end that is directly joined to the outer panel and the other end that is directly or indirectly joined to the inner panel, and is arranged on the rear side of the vehicle in the closed cross-sectional space. It is provided with a reinforcing member for reinforcing the attachment point of the stay member for assisting the opening and closing of the back door with respect to the rear pillar.
When the cross section of the rear pillar is taken on a plane including the tension direction of the seat belt with the anchor portion as a base point, the anchor portion and the one end portion and the other end portion of the reinforcing member are located on the plane. And the other end is located inside the vehicle and in front of the vehicle with respect to the one end .
The rear structure of the vehicle body.
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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001063622A (en) 1999-08-27 2001-03-13 Daihatsu Motor Co Ltd Body rear part reinforcing structure for automobile
JP2011025849A (en) 2009-07-27 2011-02-10 Daihatsu Motor Co Ltd Vehicle body rear structure of vehicle

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5434894Y2 (en) * 1976-02-25 1979-10-24
JPS6054664U (en) * 1983-09-26 1985-04-17 富士重工業株式会社 Vehicle rear pillar structure

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001063622A (en) 1999-08-27 2001-03-13 Daihatsu Motor Co Ltd Body rear part reinforcing structure for automobile
JP2011025849A (en) 2009-07-27 2011-02-10 Daihatsu Motor Co Ltd Vehicle body rear structure of vehicle

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