JP4234079B2

JP4234079B2 - Side collision sensor arrangement structure

Info

Publication number: JP4234079B2
Application number: JP2004228212A
Authority: JP
Inventors: 輝明相澤; 和明宮本; 正之志賀
Original assignee: Honda Motor Co Ltd
Current assignee: Honda Motor Co Ltd
Priority date: 2004-08-04
Filing date: 2004-08-04
Publication date: 2009-03-04
Anticipated expiration: 2024-08-04
Also published as: JP2006044450A

Description

本発明は、配設位置の自由度を高くできる側面衝突用センサ配設構造に関する。 The present invention relates to a side collision sensor arrangement structure capable of increasing the degree of freedom of arrangement position.

車両の衝突を検出するための加速度センサ等のセンサを車体に配設する場合に、センサの検出性能を確保するためには、センサの取付部周辺の変形による影響を極力排除する必要がある。このため、このようなセンサは、通常、車体における剛性の高い部分に配設されることになる。例えば、フロアパネルの上側にこのフロアパネルとで閉断面構造部を形成する車体骨格部材であるクロスメンバが取り付けられている場合に、このクロスメンバの外側にセンサを取り付ける構造（例えば特許文献１参照）や、フロアパネルの下側にこのフロアパネルとで閉断面構造部を形成する車体骨格部材であるフロアフレームが取り付けられている場合に、このフロアフレームにセンサを取り付ける構造（例えば特許文献２参照）がある。
特開平１０−４４９２２号公報特開平１０−２９４９９号公報 When a sensor such as an acceleration sensor for detecting a vehicle collision is disposed on the vehicle body, it is necessary to eliminate the influence of deformation around the sensor mounting portion as much as possible in order to ensure the detection performance of the sensor. For this reason, such a sensor is usually disposed in a highly rigid portion of the vehicle body. For example, when a cross member, which is a vehicle body skeleton member that forms a closed section structure portion with the floor panel, is attached to the upper side of the floor panel, a structure in which a sensor is attached to the outside of the cross member (see, for example, Patent Document 1) ), Or a structure in which a sensor is attached to the floor frame when a floor frame, which is a vehicle body skeleton member that forms a closed section structure portion with the floor panel, is attached to the lower side of the floor panel (see, for example, Patent Document 2) )
Japanese Patent Laid-Open No. 10-44922 Japanese Patent Laid-Open No. 10-29499

しかしながら、上記のように車体骨格部材にセンサを取り付ける構造であると、車体骨格部材が設けられた位置でなければセンサを配設できず、センサ配設の自由度が低いという問題があった。 However, in the structure in which the sensor is attached to the vehicle body skeleton member as described above, there is a problem that the sensor cannot be arranged unless the vehicle body skeleton member is provided, and the degree of freedom of sensor arrangement is low.

したがって、本発明は、検出性能を確保した上で配設の自由度を高くできる側面衝突用センサ配設構造の提供を目的とする。 Accordingly, an object of the present invention is to provide a side collision sensor arrangement structure that can increase the degree of freedom of arrangement while ensuring detection performance.

上記目的を達成するために、請求項１に係る発明は、下方に凹んで形成される凹部（例えば実施形態における凹部２１）を備えたフロアパネル（例えば実施形態におけるフロアパネル１１）を有し、前記フロアパネル上に該フロアパネルの前記凹部を含む閉断面形成部（例えば実施形態における閉断面形成部７６）とで閉断面構造部（例えば実施形態における閉断面構造部７５）を形成するカバー部材（例えば実施形態におけるカバー部材６１）を、前側のフランジ部（例えば実施形態における前フランジ部６５）が前記凹部の前板部（例えば実施形態における前板部２４）の前側に載置され後側のフランジ部（例えば実施形態における後フランジ部６６）が前記凹部の後板部（例えば実施形態における後板部２５）の後側に載置されるよう設け、前記閉断面構造部の内側にセンサ（例えば実施形態におけるセンサ５８）を配設してなるとともに、前記フロアパネルの前記閉断面形成部の下面に、前記凹部を下側で覆うとともに車両前後方向に延長されて、車幅方向に配置されたクロスメンバ（例えば実施形態におけるクロスメンバ１４）に連結されるスティフナ（例えば実施形態におけるスティフナ３３）を配設してなることを特徴としている。 In order to achieve the above object, the invention according to claim 1 includes a floor panel (for example, the floor panel 11 in the embodiment) provided with a recess (for example, the recess 21 in the embodiment) formed to be recessed downward. A cover member that forms a closed cross-section structure portion (for example, closed cross-section structure portion 75 in the embodiment) on the floor panel with a closed cross-section formation portion (for example, the closed cross-section formation portion 76 in the embodiment) including the concave portion of the floor panel. (For example, the cover member 61 in the embodiment) , the rear flange portion (for example, the front flange portion 65 in the embodiment) is placed on the front side of the front plate portion (for example, the front plate portion 24 in the embodiment) of the recess. flange portion of such that the (eg rear flange section 66 in the embodiment) is placed on the rear side of the (rear plate portion 25 in the example embodiment) plate portions after said recess In addition, a sensor (for example, the sensor 58 in the embodiment) is disposed inside the closed cross-section structure portion, and the recess is covered on the lower surface of the closed cross-section forming portion of the floor panel on the lower side and front and rear of the vehicle. A stiffener (for example, the stiffener 33 in the embodiment) that extends in the direction and is connected to a cross member (for example, the cross member 14 in the embodiment) disposed in the vehicle width direction is provided.

請求項２に係る発明は、請求項１に係る発明において、前記センサが前記フロアパネルと前記スティフナとに共締めされていることを特徴としている。 The invention according to claim 2 is characterized in that, in the invention according to claim 1 , the sensor is fastened together with the floor panel and the stiffener.

請求項１に係る発明によれば、フロアパネル上にカバー部材を設けることで閉断面構造部を形成して剛性を高め、この剛性が高められた閉断面構造部の内側にセンサを配設するため、車体骨格部材がなくても剛性の高い部分にセンサを配設することができる。したがって、センサの検出性能を確保した上で、センサの配設の自由度を高くできる。しかも、フロアパネルの上側にセンサを設けるため水没等の影響を受け難くでき、その上、センサをフロアパネルの上側に設けてもカバー部材で覆うため乗員の歩行や荷物の搭載等による影響を排除できる。 According to the first aspect of the present invention, the cover member is provided on the floor panel to form the closed cross-section structure portion to increase the rigidity, and the sensor is disposed inside the closed cross-section structure portion with the increased rigidity. Therefore, even if there is no vehicle body skeleton member, the sensor can be disposed in a highly rigid portion. Therefore, it is possible to increase the degree of freedom in arranging the sensor while ensuring the detection performance of the sensor. In addition, since the sensor is installed on the upper side of the floor panel, it can be hardly affected by submergence, etc. In addition, even if the sensor is provided on the upper side of the floor panel, it is covered with a cover member, eliminating the effects of occupant walking and loading of luggage. it can.

また、フロアパネルの閉断面構造部を形成する閉断面形成部に凹部を形成しこの凹部にセンサを配設するため、フロアパネル上にセンサを設けてカバー部材で覆うようにしても車室内へ突出する高さを抑えることができる。しかもフロアパネルの凹部により閉断面構造部の剛性をさらに高めることができるため、センサの検出性能をさらに高めることができる。 Further , in order to form a recessed portion in the closed section forming portion that forms the closed section structure portion of the floor panel and arrange the sensor in this recessed portion, even if the sensor is provided on the floor panel and covered with the cover member, The protruding height can be suppressed. In addition, since the rigidity of the closed cross-section structure portion can be further increased by the recess of the floor panel, the detection performance of the sensor can be further increased.

また、フロアパネルの閉断面構造部を形成する閉断面形成部の下面にスティフナを配設するため、閉断面構造部をさらに補強することができ、閉断面構造部の剛性をさらに高めることができる。したがって、センサの検出性能をさらに高めることができる。 Further , since the stiffener is disposed on the lower surface of the closed section forming portion that forms the closed section structure portion of the floor panel, the closed section structure portion can be further reinforced, and the rigidity of the closed section structure portion can be further increased. . Therefore, the detection performance of the sensor can be further enhanced.

また、スティフナが車体骨格部材に連結されているため、閉断面構造部をスティフナで確実に補強することができ、閉断面構造部の剛性をさらに高めることができる。したがって、センサの検出性能をさらに高めることができる。 Moreover , since the stiffener is connected to the vehicle body skeleton member, the closed cross-section structure portion can be reliably reinforced with the stiffener, and the rigidity of the closed cross-section structure portion can be further increased. Therefore, the detection performance of the sensor can be further enhanced.

請求項２に係る発明によれば、センサがフロアパネルとスティフナとに共締めされているため、センサの取付剛性も高めることができる。したがって、センサの検出性能をさらに高めることができる。 According to the invention which concerns on Claim 2 , since the sensor is fastened together by the floor panel and the stiffener, the attachment rigidity of a sensor can also be improved. Therefore, the detection performance of the sensor can be further enhanced.

本発明の一実施形態の側面衝突用センサ配設構造を図面を参照して以下に説明する。なお、以下の説明における前後は車体における前後である。 A side collision sensor arrangement structure according to an embodiment of the present invention will be described below with reference to the drawings. In addition, before and after in the following description is before and after the vehicle body.

図１は後部の車体フロアを上側から見た概略図で、鋼板からなるフロアパネル１１の下面にはフロアパネル１１とで閉断面構造を形成する鋼板からなる一対のフロアフレーム１２が前後方向に延びる姿勢で車幅方向両側に取り付けられている。また、後部のフロアパネル１１の下面にはそれぞれフロアパネル１１とで閉断面構造を形成する三本の鋼板からなるクロスメンバ１３，１４，１５が車幅方向に延びかつ両フロアフレーム１２を結ぶように取り付けられている。ここで、最も後側のクロスメンバ１５は、フロアフレーム１２のダンパマウント部１６同士を結ぶ位置に設けられている。 FIG. 1 is a schematic view of a rear vehicle body floor as viewed from above. A pair of floor frames 12 made of steel plates that form a closed section structure with the floor panel 11 extend in the front-rear direction on the lower surface of a floor panel 11 made of steel plates. It is mounted on both sides in the vehicle width direction. Cross members 13, 14, 15 made of three steel plates that form a closed cross-sectional structure with the floor panel 11 extend in the vehicle width direction and connect the two floor frames 12 to the lower surface of the rear floor panel 11. Is attached. Here, the rearmost cross member 15 is provided at a position connecting the damper mount portions 16 of the floor frame 12.

最も後側のクロスメンバ１５の後側であって左右のフロアフレーム１２の間となる位置のフロアパネル１１には、図示略の折畳シートを折り畳み時に収納するための収納凹部１７が設けられている。この図示略の折畳シートは使用時には収納凹部１７の前側つまり最も後側のクロスメンバ１５およびその一つ前のクロスメンバ１４の上方に設けられることになる。 The floor panel 11 at the rear side of the rearmost cross member 15 and between the left and right floor frames 12 is provided with a storage recess 17 for storing a folding sheet (not shown) when folded. Yes. The folded sheet (not shown) is provided above the front side, that is, the rearmost cross member 15 and the front cross member 14 of the storage recess 17 in use.

そして、フロアパネル１１のこれらクロスメンバ１４，１５の間となる位置であって両側のフロアフレーム１２の間となる車幅方向の中央位置には、周囲よりも下方に凹む凹部２１が前後方向においてはクロスメンバ１４側にやや近接して形成されている。この凹部２１は、図２に示すように、車幅方向に延在するとともに周囲板部２３から後下がりに突出する前板部２４と、この前板部２４の後側で車幅方向に延在するとともに周囲板部２３から前下がりに突出する後板部２５と、車体前後方向に延在するとともに周囲板部２３から下方に突出してこれら前板部２４および後板部２５の車幅方向同側の端部同士を結ぶ左右一対の側板部２６と、これら前板部２４、後板部２５および一対の側板部２６のそれぞれの下端縁部を結ぶ底板部２７とを有している。 A concave portion 21 that is recessed downward from the periphery is provided at the center position in the vehicle width direction between the cross members 14 and 15 of the floor panel 11 and between the floor frames 12 on both sides. Is formed slightly close to the cross member 14 side. As shown in FIG. 2, the recess 21 extends in the vehicle width direction and extends in the vehicle width direction on the rear side of the front plate portion 24 and the front plate portion 24 protruding rearwardly from the peripheral plate portion 23. A rear plate portion 25 that protrudes forward and downward from the peripheral plate portion 23, and extends in the longitudinal direction of the vehicle body and protrudes downward from the peripheral plate portion 23 to the vehicle width direction of the front plate portion 24 and the rear plate portion 25. It has a pair of left and right side plate portions 26 that connect the end portions on the same side, and a bottom plate portion 27 that connects the lower end edge portions of the front plate portion 24, the rear plate portion 25, and the pair of side plate portions 26.

底板部２７の中央には取付穴２８が穿設されており、周囲板部２３における前板部２４の直前位置にも取付穴２９が穿設されていて、さらに、周囲板部２３における後板部２５の直後位置にも取付穴３０が穿設されている。 A mounting hole 28 is drilled in the center of the bottom plate portion 27, a mounting hole 29 is also drilled immediately before the front plate portion 24 in the peripheral plate portion 23, and a rear plate in the peripheral plate portion 23 is further formed. A mounting hole 30 is also formed immediately after the portion 25.

フロアパネル１１の凹部２１の下側には鋼板からなるスティフナ３３が配設されている。このスティフナ３３は、略水平に配置される下板部３４と、下板部３４の前端縁部から車幅方向に延在する状態で前上がり突出する前板部３５と、下板部３４の後端縁部から車幅方向に延在する状態で後上がりに突出する後板部３６と、後板部３６の上端縁部から車幅方向に延在する状態で後方に突出する後フランジ部３７と、前板部３５の上端縁部から車幅方向に延在する状態で前方に突出する前フランジ部３８と、前フランジ部３８の前端縁部から車幅方向に延在する状態で下方に突出する接合板部３９とを有している。 A stiffener 33 made of a steel plate is disposed below the recess 21 of the floor panel 11. The stiffener 33 includes a lower plate portion 34 that is disposed substantially horizontally, a front plate portion 35 that protrudes upward from the front end edge of the lower plate portion 34 in a vehicle width direction, and a lower plate portion 34. A rear plate portion 36 that protrudes rearward in a state extending from the rear end edge portion in the vehicle width direction, and a rear flange portion that protrudes rearward in a state extended from the upper end edge portion of the rear plate portion 36 in the vehicle width direction. 37, a front flange portion 38 that projects forward from the upper edge of the front plate portion 35 in the vehicle width direction, and a lower portion that extends in the vehicle width direction from the front edge of the front flange portion 38. And a joining plate portion 39 protruding to the surface.

このスティフナ３３は、図３に示すように、下板部３４が凹部２１の底板部２７の下面に接合され、前板部３５が凹部２１の前板部２４の下面に接合され、後板部３６が凹部２１の後板部２５の下面に接合され、後フランジ部３７が凹部２１より後側の周囲板部２３の下面に接合され、前フランジ部３８が凹部２１より前側の周囲板部２３の下面に接合される。図２に示すように、スティフナ３３の車幅方向の幅は凹部２１の同方向の幅と同等とされており、凹部２１を下側で全面的に覆うようになっている。 As shown in FIG. 3, the stiffener 33 has a lower plate portion 34 bonded to the lower surface of the bottom plate portion 27 of the recess 21, a front plate portion 35 bonded to the lower surface of the front plate portion 24 of the recess 21, and a rear plate portion. 36 is joined to the lower surface of the rear plate portion 25 of the concave portion 21, the rear flange portion 37 is joined to the lower surface of the peripheral plate portion 23 on the rear side of the concave portion 21, and the front flange portion 38 is connected to the peripheral plate portion 23 on the front side of the concave portion 21. It is joined to the lower surface of. As shown in FIG. 2, the width of the stiffener 33 in the vehicle width direction is the same as the width of the concave portion 21 in the same direction, and covers the concave portion 21 entirely on the lower side.

ここで、周囲板部２３の凹部２１より前側の下面には上記したクロスメンバ１４が接合されている。このクロスメンバ１４は、図３に示すように、略水平に配置されて車幅方向に延在する下板部４２と、下板部４２の前端縁部から車幅方向に延在する状態で上方に突出する前板部４３と、下板部４２の後端縁部から車幅方向に延在する状態で上方に突出する後板部４４と、前板部４３の上端縁部から車幅方向に延在する状態で前方に突出する前フランジ部４５と、後板部４４の上端縁部から車幅方向に延在する状態で後方に突出する後フランジ部４６とを有しており、前フランジ部４５および後フランジ部４６においてフロアパネル１１の下面に接合されている。そして、上記したスティフナ３３は、前フランジ部３８が、凹部２１より前側の周囲板部２３の下面に接合されるとともにこのクロスメンバ１４の後フランジ部４６の下面に接合され、さらに接合板部３９がクロスメンバ１４の後板部４４の後面に接合される。これにより、スティフナ３３は車体骨格部材であるクロスメンバ１４に連結されている。なお、スティフナ３３はフロアパネル１１およびクロスメンバ１４に適宜の位置が溶接される。 Here, the cross member 14 described above is joined to the lower surface of the peripheral plate portion 23 in front of the recess 21. As shown in FIG. 3, the cross member 14 is disposed substantially horizontally and extends in the vehicle width direction, and extends from the front edge of the lower plate portion 42 in the vehicle width direction. A front plate portion 43 protruding upward, a rear plate portion 44 protruding upward in a state extending from the rear end edge portion of the lower plate portion 42 in the vehicle width direction, and a vehicle width from the upper end edge portion of the front plate portion 43 A front flange portion 45 projecting forward in a state extending in the direction, and a rear flange portion 46 projecting rearward in a state extending in the vehicle width direction from the upper edge of the rear plate portion 44, The front flange portion 45 and the rear flange portion 46 are joined to the lower surface of the floor panel 11. In the stiffener 33 described above, the front flange portion 38 is joined to the lower surface of the peripheral plate portion 23 on the front side of the recess 21 and is joined to the lower surface of the rear flange portion 46 of the cross member 14. Is joined to the rear surface of the rear plate portion 44 of the cross member 14. Thus, the stiffener 33 is connected to the cross member 14 that is a vehicle body skeleton member. The stiffener 33 is welded to the floor panel 11 and the cross member 14 at appropriate positions.

スティフナ３３の前フランジ部３８にはフロアパネル１１の周囲板部２３の前側の取付穴２９と位置が合う取付穴４９が穿設されており、スティフナ３３の後フランジ部３７にもフロアパネル１１の周囲板部２３の後側の取付穴３０と位置が合う取付穴５０が穿設されている。また、スティフナ３３の下板部３４にもフロアパネル１１の底板部２７の取付穴２８と位置が合う取付穴５１が穿設されている。 The front flange portion 38 of the stiffener 33 is provided with a mounting hole 49 that is aligned with the front mounting hole 29 of the peripheral plate portion 23 of the floor panel 11, and the rear flange portion 37 of the stiffener 33 is also formed on the floor flange 11. A mounting hole 50 that is aligned with the mounting hole 30 on the rear side of the peripheral plate portion 23 is formed. Further, the lower plate portion 34 of the stiffener 33 is also provided with an attachment hole 51 that is aligned with the attachment hole 28 of the bottom plate portion 27 of the floor panel 11.

そして、スティフナ３３の前フランジ部３８の下面には取付穴４９と位置を合わせてウェルドナット５２が固定されており、スティフナ３３の後フランジ部３７の下面にも取付穴５０と位置を合わせてウェルドナット５３が固定されている。さらに、スティフナ３３の下板部３４の下面にも取付穴５１と位置を合わせてウェルドナット５４が固定されている。 A weld nut 52 is fixed to the lower surface of the front flange portion 38 of the stiffener 33 in alignment with the mounting hole 49, and the weld nut 52 is also aligned to the lower surface of the rear flange portion 37 of the stiffener 33 and welded. A nut 53 is fixed. Further, a weld nut 54 is fixed to the lower surface of the lower plate portion 34 of the stiffener 33 so as to align with the mounting hole 51.

ここで、フロアパネル１１の凹部２１の底板部２７の取付穴２８とスティフナ３３の下板部３４の取付穴５１とに挿入される取付ボルト５６でセンサ５８が凹部２１に取り付けられる。つまり、センサ５８には中間部に上下方向に沿う取付穴５９が設けられており、センサ５８を凹部２１の底板部２７に載置させた状態で上側から取付穴５９に挿入された取付ボルト５６が、さらにフロアパネル１１の凹部２１の底板部２７の取付穴２８とスティフナ３３の下板部３４の取付穴５１とに挿入され、取付穴５１の下のウェルドナット５４に螺合されることでセンサ５８が凹部２１の底板部２７に取り付けられる。このように、センサ５８は、フロアパネル１１とスティフナ３３とに共締めされる。なお、このセンサ５８は具体的には加速度センサであり、側面衝突が生じたときにこれを検出して図示略のサイドエアバッグを展開させるためのものである。 Here, the sensor 58 is attached to the concave portion 21 with the mounting bolt 56 inserted into the mounting hole 28 of the bottom plate portion 27 of the concave portion 21 of the floor panel 11 and the mounting hole 51 of the lower plate portion 34 of the stiffener 33. That is, the sensor 58 is provided with a mounting hole 59 extending in the vertical direction in the middle portion, and the mounting bolt 56 inserted into the mounting hole 59 from above with the sensor 58 placed on the bottom plate portion 27 of the recess 21. Is inserted into the mounting hole 28 of the bottom plate portion 27 of the recess 21 of the floor panel 11 and the mounting hole 51 of the lower plate portion 34 of the stiffener 33 and screwed into the weld nut 54 below the mounting hole 51. A sensor 58 is attached to the bottom plate portion 27 of the recess 21. Thus, the sensor 58 is fastened together with the floor panel 11 and the stiffener 33. The sensor 58 is specifically an acceleration sensor for detecting a side collision when a side collision occurs and deploying a side airbag (not shown).

フロアパネル１１の凹部２１の上側には鋼板からなるカバー部材６１が配設される。このカバー部材６１は、略水平に配置される上板部６２と、上板部６２の前端縁部から車幅方向に延在する状態で前下がりに突出する前板部６３と、上板部６２の後端縁部から車幅方向に延在する状態で後下がりに突出する後板部６４と、前板部６３の下端縁部から車幅方向に延在する状態で前方に突出する前フランジ部６５と、後板部６４の下端縁部から車幅方向に延在する状態で後方に突出する後フランジ部６６とを有するハット型断面形状をなしている。 A cover member 61 made of a steel plate is disposed above the recess 21 of the floor panel 11. The cover member 61 includes an upper plate portion 62 that is disposed substantially horizontally, a front plate portion 63 that projects from the front end edge portion of the upper plate portion 62 in the vehicle width direction and protrudes forward and downward, and an upper plate portion. 62, a rear plate 64 that protrudes rearward in a state extending from the rear edge of the vehicle 62 in the vehicle width direction, and a front plate that protrudes forward in a state of extending from the lower edge of the front plate 63 in the vehicle width direction. A hat-shaped cross-sectional shape having a flange portion 65 and a rear flange portion 66 protruding rearward in a state of extending in the vehicle width direction from the lower end edge portion of the rear plate portion 64 is formed.

このカバー部材６１は、凹部２１の底板部２７の上側にこれと平行に上板部６２を配置した状態で、前フランジ部６５においてフロアパネル１１の周囲板部２３の前板部２４より前側に載置され、後フランジ部６６においてフロアパネル１１の周囲板部２３の後板部２５より後側に載置される。カバー部材６１の前フランジ部６５にはフロアパネル１１の周囲板部２３の前側の取付穴２９と位置が合う取付穴６８が穿設されており、カバー部材６１の後フランジ部６６にもフロアパネル１１の周囲板部２３の後側の取付穴３０と位置が合う取付穴６９が穿設されている。 The cover member 61 is disposed on the front side of the front plate portion 24 of the peripheral plate portion 23 of the floor panel 11 in the front flange portion 65 in a state where the upper plate portion 62 is disposed on the upper side of the bottom plate portion 27 of the recess 21 in parallel therewith. The rear flange portion 66 is placed on the rear side of the rear plate portion 25 of the peripheral plate portion 23 of the floor panel 11. The front flange portion 65 of the cover member 61 is provided with a mounting hole 68 that is aligned with the mounting hole 29 on the front side of the peripheral plate portion 23 of the floor panel 11, and the rear flange portion 66 of the cover member 61 is also provided with the floor panel. A mounting hole 69 that is aligned with the mounting hole 30 on the rear side of the 11 surrounding plate portions 23 is formed.

そして、上側からカバー部材６１の前フランジ部６５の取付穴６８に挿入された取付ボルト７１が、さらにフロアパネル１１の取付穴２９とスティフナ３３の前フランジ部３８の取付穴４９とに挿入され、取付穴４９の下のウェルドナット５２に螺合されるとともに、上側からカバー部材６１の後フランジ部６６の取付穴６９に挿入された取付ボルト７２が、さらにフロアパネル１１の取付穴３０とスティフナ３３の後フランジ部３７の取付穴５０とに挿入され、取付穴５０の下のウェルドナット５３に螺合されることで、カバー部材６１がフロアパネル１１およびスティフナ３３に共締めされる。図２に示すように、カバー部材６１の車幅方向の幅は凹部２１の同方向の幅と同等とされており、凹部２１を上側で全面的に覆うようになっている。 Then, the mounting bolt 71 inserted into the mounting hole 68 of the front flange portion 65 of the cover member 61 from the upper side is further inserted into the mounting hole 29 of the floor panel 11 and the mounting hole 49 of the front flange portion 38 of the stiffener 33, A mounting bolt 72 screwed into the weld nut 52 below the mounting hole 49 and inserted into the mounting hole 69 of the rear flange portion 66 of the cover member 61 from above is further connected to the mounting hole 30 of the floor panel 11 and the stiffener 33. The cover member 61 is fastened to the floor panel 11 and the stiffener 33 by being inserted into the mounting hole 50 of the rear flange portion 37 and screwed into the weld nut 53 below the mounting hole 50. As shown in FIG. 2, the width of the cover member 61 in the vehicle width direction is the same as the width of the recess 21 in the same direction, and covers the recess 21 entirely on the upper side.

このようにしてフロアパネル１１の上にカバー部材６１が取り付けられた状態で、図３に示すように、カバー部材６１がフロアパネル１１とで閉断面構造部７５を形成することになる。つまり、カバー部材６１と、これに連結されるフロアパネル１１の前後の取付ボルト７１，７２間の周囲板部２３および凹部２１からなる閉断面形成部７６とで閉断面構造部７５が形成される。そして、この閉断面構造部７５の内側にセンサ５８が配設されている。言い換えれば、閉断面構造部７５を形成するフロアパネル１１の閉断面形成部７６に凹部２１が形成されており、この凹部２１にセンサ５８が配設されている。加えて、フロアパネル１１の閉断面構造部７５を形成する閉断面形成部７６の下面にスティフナ３３が配設されている。なお、カバー部材６１はフロアパネル１１とで閉断面構造部７５を形成するものの、左右のフロアフレーム１２とは離れており、よって車体骨格部材を構成するものではなく、またカバー部材６１自体は、左右のフロアフレーム１２および前後のクロスメンバ等の車体骨格部材から離間している。 With the cover member 61 attached on the floor panel 11 in this way, the cover member 61 forms a closed cross-section structure portion 75 with the floor panel 11 as shown in FIG. That is, the closed cross-section structure portion 75 is formed by the cover member 61 and the closed cross-section forming portion 76 formed of the peripheral plate portion 23 and the recess 21 between the front and rear mounting bolts 71 and 72 of the floor panel 11 connected thereto. . A sensor 58 is disposed inside the closed section structure portion 75. In other words, the recessed portion 21 is formed in the closed section forming portion 76 of the floor panel 11 that forms the closed section structure portion 75, and the sensor 58 is disposed in the recessed portion 21. In addition, the stiffener 33 is disposed on the lower surface of the closed section forming portion 76 that forms the closed section structure portion 75 of the floor panel 11. Although the cover member 61 forms the closed section structure portion 75 with the floor panel 11, it is separated from the left and right floor frames 12, and thus does not constitute a vehicle body skeleton member, and the cover member 61 itself is The vehicle body frame members such as the left and right floor frames 12 and the front and rear cross members are separated from each other.

以上に述べた本実施形態によれば、フロアパネル１１上に車体骨格部材ではないカバー部材６１を設けることで閉断面構造部７５を形成して剛性を高め、この剛性が高められた閉断面構造部７５の内側にセンサ５８を取り付けるため、車体骨格部材がなくても剛性の高い部分にセンサ５８を配設することができる。したがって、センサ５８の検出性能を確保した上で、センサ５８の配設の自由度を高くできる。しかも、フロアパネル１１の上側にセンサ５８を設けるため水没等の影響を受け難くでき、その上、センサ５８をフロアパネル１１の上側に設けてもカバー部材６１で覆うため乗員の歩行や荷物の搭載等による影響を排除できる。 According to the present embodiment described above, the closed cross-section structure portion 75 is formed on the floor panel 11 so as to form the closed cross-section structure portion 75 to increase the rigidity, and the closed cross-section structure with the increased rigidity is provided. Since the sensor 58 is attached to the inside of the part 75, the sensor 58 can be disposed in a portion having high rigidity even without a vehicle body skeleton member. Therefore, it is possible to increase the degree of freedom in disposing the sensor 58 while ensuring the detection performance of the sensor 58. In addition, since the sensor 58 is provided on the upper side of the floor panel 11, it can be hardly affected by submergence and the like, and even if the sensor 58 is provided on the upper side of the floor panel 11, it is covered with the cover member 61, so The influence by etc. can be excluded.

また、フロアパネル１１の閉断面構造部７５を形成する閉断面形成部７６に凹部２１を形成しこの凹部２１にセンサ５８を配設するため、フロアパネル１１上にセンサ５８を設けてカバー部材６１で覆うようにしても車室内へ突出する高さを抑えることができる。しかもフロアパネル１１の凹部２１により閉断面構造部７５の剛性をさらに高めることができるため、センサ５８の検出性能をさらに高めることができる。 Further, in order to form the recessed portion 21 in the closed section forming portion 76 that forms the closed section structure portion 75 of the floor panel 11 and dispose the sensor 58 in the recessed portion 21, the sensor 58 is provided on the floor panel 11 to cover the cover member 61. Even if it covers, the height which protrudes into a vehicle interior can be suppressed. In addition, the rigidity of the closed cross-section structure portion 75 can be further increased by the recess 21 of the floor panel 11, so that the detection performance of the sensor 58 can be further increased.

さらに、フロアパネル１１の閉断面構造部７５を形成する閉断面形成部７６の下面にスティフナ３３を配設するため、閉断面構造部７５をさらに補強することができ、閉断面構造部７５の剛性をさらに高めることができる。したがって、センサ５８の検出性能をさらに高めることができる。 Further, since the stiffener 33 is disposed on the lower surface of the closed section forming portion 76 that forms the closed section structure portion 75 of the floor panel 11, the closed section structure portion 75 can be further reinforced, and the rigidity of the closed section structure portion 75 can be increased. Can be further enhanced. Therefore, the detection performance of the sensor 58 can be further enhanced.

加えて、スティフナ３３が車体骨格部材であるクロスメンバ１４に連結されているため、閉断面構造部７５をスティフナ３３で確実に補強することができ、閉断面構造部７５の剛性をさらに高めることができる。したがって、センサ５８の検出性能をさらに高めることができる。 In addition, since the stiffener 33 is connected to the cross member 14 that is a vehicle body skeleton member, the closed cross-section structure portion 75 can be reliably reinforced by the stiffener 33, and the rigidity of the closed cross-section structure portion 75 can be further increased. it can. Therefore, the detection performance of the sensor 58 can be further enhanced.

さらに、センサ５８がフロアパネル１１とスティフナ３３とに共締めされているため、センサ５８の取付剛性も高めることができる。したがって、センサ５８の検出性能をさらに高めることができる。 Furthermore, since the sensor 58 is fastened to the floor panel 11 and the stiffener 33, the mounting rigidity of the sensor 58 can be increased. Therefore, the detection performance of the sensor 58 can be further enhanced.

なお、以上においては、センサ５８をフロアパネル１１の凹部２１に配設する場合を例にとり説明したが、閉断面構造部７５内に配設すれば良く、例えばカバー部材６１に取り付けることも可能である。 In the above description, the case where the sensor 58 is disposed in the concave portion 21 of the floor panel 11 has been described as an example. However, the sensor 58 may be disposed in the closed cross-section structure portion 75 and can be attached to the cover member 61, for example. is there.

本発明の一実施形態のセンサ配設構造が適用される車体フロアの後部を概略的に示す平面図である。It is a top view which shows roughly the rear part of the vehicle body floor to which the sensor arrangement | positioning structure of one Embodiment of this invention is applied. 本発明の一実施形態のセンサ配設構造を示す分解斜視図である。It is a disassembled perspective view which shows the sensor arrangement | positioning structure of one Embodiment of this invention. 本発明の一実施形態のセンサ配設構造を示す側断面図である。It is side sectional drawing which shows the sensor arrangement | positioning structure of one Embodiment of this invention.

Explanation of symbols

１１フロアパネル
１４クロスメンバ（車体骨格部材）
２１凹部
３３スティフナ
５８センサ
６１カバー部材
７５閉断面構造部
７６閉断面形成部 11 Floor panel 14 Cross member (body frame)
21 Concave portion 33 Stiffener 58 Sensor 61 Cover member 75 Closed section structure section 76 Closed section forming section

Claims

Having a floor panel with a recess formed to be recessed downward;
A cover member that forms a closed cross-section structure portion on the floor panel with a closed cross-section forming portion that includes the concave portion of the floor panel , a front flange portion is placed on the front side of the front plate portion of the concave portion, and a rear side The flange portion is provided so as to be placed on the rear side of the rear plate portion of the recess, and a sensor for detecting a side collision is disposed inside the closed cross-section structure portion,
A stiffener is provided on the lower surface of the closed section forming portion of the floor panel so as to cover the concave portion on the lower side and extend in the vehicle front-rear direction and connected to a cross member arranged in the vehicle width direction. A side collision sensor arrangement structure characterized by the above.

2. The side collision sensor arrangement structure according to claim 1, wherein the sensor is fastened to the floor panel and the stiffener.