JP7056383B2 - Vehicle undercarriage - Google Patents

Vehicle undercarriage Download PDF

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Publication number
JP7056383B2
JP7056383B2 JP2018103614A JP2018103614A JP7056383B2 JP 7056383 B2 JP7056383 B2 JP 7056383B2 JP 2018103614 A JP2018103614 A JP 2018103614A JP 2018103614 A JP2018103614 A JP 2018103614A JP 7056383 B2 JP7056383 B2 JP 7056383B2
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cross member
duct
vehicle
seat
duct portion
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JP2019206303A (en
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雄亮 池田
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Suzuki Motor Co Ltd
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Suzuki Motor Co Ltd
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Priority to JP2018103614A priority Critical patent/JP7056383B2/en
Priority to DE102019003692.1A priority patent/DE102019003692B4/en
Priority to FR1905658A priority patent/FR3081776B1/en
Priority to CN201910464121.4A priority patent/CN110550115B/en
Publication of JP2019206303A publication Critical patent/JP2019206303A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00507—Details, e.g. mounting arrangements, desaeration devices
    • B60H1/00557—Details of ducts or cables
    • B60H1/00564—Details of ducts or cables of air ducts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/34—Nozzles; Air-diffusers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/005—Arrangement or mounting of seats in vehicles, e.g. dismountable auxiliary seats
    • B60N2/015—Attaching seats directly to vehicle chassis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/0207—Wire harnesses
    • B60R16/0215—Protecting, fastening and routing means therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
    • B62D21/02—Understructures, i.e. chassis frame on which a vehicle body may be mounted comprising longitudinally or transversely arranged frame members
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
    • B62D21/09—Means for mounting load bearing surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/20—Floors or bottom sub-units

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Body Structure For Vehicles (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Seats For Vehicles (AREA)

Description

本発明は、車両下部構造に関するものである。 The present invention relates to a vehicle lower structure.

自動車のシート下の空間には、空調用ダクトや電装部品が配置されることがある。例えば、特許文献１には、前部座席（２）の下の空間に、バッテリ（５）と、後部座席の足元に空調風を送るための空調ダクト（１３）と、が配置された構造が開示されている。当該構造において、バッテリ（５）は、第２クロスメンバ（６）と第３クロスメンバ（７）との間かつサイドシル（１４）の内側に、サイドシル（１４）と距離を置いて配置されている。空調ダクト（１３）は、導入ダクト部（１３Ａ）と、第１ダクト部（１３Ｂ）と、第２ダクト部（１３Ｃ）と、第３ダクト部（１３Ｄ）と、を有している。導入ダクト部（１３Ａ）は、車両前方から前部座席（２）側に延びている。第１ダクト部（１３Ｂ）は、第２クロスメンバ（６）の上面に沿って車幅方向外側に延びている。第２ダクト部（１３Ｃ）は、バッテリ（５）とサイドシル（１４）との間に配置されており、車両後方に延びている。第３ダクト部（１３Ｄ）は、第３クロスメンバ（７）の上面に沿って車幅方向内側に延びている。このような配置により、車両側面から大きな荷重が入力してサイドシル（１４）が室内側へ変形した際、空調ダクト（１３）の変形によってサイドシル（１４）からバッテリ（５）に伝わる荷重の一部が吸収され、バッテリ（５）の変形が抑制される。 Air-conditioning ducts and electrical components may be placed in the space under the seat of an automobile. For example, Patent Document 1 has a structure in which a battery (5) and an air conditioning duct (13) for sending air conditioning air to the feet of the rear seats are arranged in a space under the front seat (2). It has been disclosed. In the structure, the battery (5) is arranged between the second cross member (6) and the third cross member (7) and inside the side sill (14) at a distance from the side sill (14). .. The air conditioning duct (13) has an introduction duct portion (13A), a first duct portion (13B), a second duct portion (13C), and a third duct portion (13D). The introduction duct portion (13A) extends from the front of the vehicle to the front seat (2) side. The first duct portion (13B) extends outward in the vehicle width direction along the upper surface of the second cross member (6). The second duct portion (13C) is arranged between the battery (5) and the side sill (14) and extends to the rear of the vehicle. The third duct portion (13D) extends inward in the vehicle width direction along the upper surface of the third cross member (7). Due to such an arrangement, when a large load is input from the side surface of the vehicle and the side sill (14) is deformed to the indoor side, a part of the load transmitted from the side sill (14) to the battery (5) due to the deformation of the air conditioning duct (13). Is absorbed and the deformation of the battery (5) is suppressed.

特開２０１５－７４４０６号公報JP-A-2015-74406

上述した特許文献１の構造においては、第１ダクト部（１３Ｂ）及び第３ダクト部（１３Ｄ）が、第２クロスメンバ（６）及び第３クロスメンバ（７）の上に配置されている。このため、前部座席（２）を車体に取り付けるにあたっては、第２クロスメンバ（６）及び第３クロスメンバ（７）の上面に取り付けることが難しく、前部座席（２）の取付構造が複雑になってしまうという問題があり、改善の余地があった。 In the structure of Patent Document 1 described above, the first duct portion (13B) and the third duct portion (13D) are arranged on the second cross member (6) and the third cross member (7). Therefore, when mounting the front seat (2) on the vehicle body, it is difficult to mount it on the upper surfaces of the second cross member (6) and the third cross member (7), and the mounting structure of the front seat (2) is complicated. There was a problem that it became, and there was room for improvement.

本発明はこのような観点からなされたものであり、シートの取付構造を簡素にでき、かつ、シート下の空間を有効利用できる車両下部構造を提供することを課題とする。 The present invention has been made from such a viewpoint, and it is an object of the present invention to provide a vehicle lower structure capable of simplifying a seat mounting structure and effectively utilizing the space under the seat.

本発明は、フロアパネル上に、車両前後方向に離間してサイドシルから車幅方向内側に延びた第１クロスメンバ及び第２クロスメンバが設けられ、前記第１クロスメンバ及び前記第２クロスメンバの各上面にシートブラケットが取り付けられ、該シートブラケットに支持されたシートの下方空間かつ前記第１クロスメンバと前記第２クロスメンバとの間に、電装部品と空調用ダクトとが配置された車両下部構造であって、前記電装部品は、前記第１クロスメンバ、前記第２クロスメンバ、前記サイドシルそれぞれと間隔をあけて配置され、前記第１クロスメンバに車両前後方向に貫通した孔が設けられ、前記空調用ダクトが、前記第１クロスメンバの前記孔内に配置されて、他のダクトと接続される接続部と、前記接続部に連なり、前記第１クロスメンバと前記電装部品との間に配置され、車幅方向に延びた第１ダクト部と、前記第１ダクト部に連なり、前記サイドシルと前記電装部品との間に配置され、車両前後方向に延びた第２ダクト部と、前記第２ダクト部に連なり、前記第２クロスメンバと前記電装部品との間に配置され、車幅方向に延びた第３ダクト部と、を備え、前記第３ダクト部における前記第２ダクト部から離れた端部に、空調風の吹出し口が設けられており、該吹出し口は、前記第２クロスメンバよりも上方に配置されていることを特徴とする。 In the present invention, a first cross member and a second cross member extending inward in the vehicle width direction from the side sill separated in the vehicle front-rear direction are provided on the floor panel, and the first cross member and the second cross member are provided. A seat bracket is attached to each upper surface, and an electrical component and an air conditioning duct are arranged in the space below the seat supported by the seat bracket and between the first cross member and the second cross member. In the structure, the electrical components are arranged at intervals from the first cross member, the second cross member, and the side sill, and the first cross member is provided with a hole penetrating in the vehicle front-rear direction. The air-conditioning duct is arranged in the hole of the first cross member, is connected to a connection portion connected to another duct, and is connected to the connection portion, and is between the first cross member and the electrical component. A first duct portion arranged and extending in the vehicle width direction, a second duct portion connected to the first duct portion, arranged between the side sill and the electrical component, and extending in the vehicle front-rear direction, and the first duct portion. It is provided with a third duct portion that is connected to the two duct portions, is arranged between the second cross member and the electrical component, and extends in the vehicle width direction, and is separated from the second duct portion in the third duct portion. An air-conditioning air outlet is provided at the end of the duct, and the outlet is characterized in that it is arranged above the second cross member.

本発明の車両下部構造によれば、シートの取付構造を簡素にでき、かつ、シート下の空間を有効利用できる車両下部構造を提供することができる。 According to the vehicle lower structure of the present invention, it is possible to provide a vehicle lower structure that can simplify the seat mounting structure and effectively utilize the space under the seat.

本発明の実施例にかかる車両下部構造を示す平面図であり、シートを除いた状態を示す図である。It is a top view which shows the vehicle lower structure which concerns on embodiment of this invention, and is the figure which shows the state which removed the seat. 図１の車両下部構造において、シートが取り付けられた状態を示す斜視図である。It is a perspective view which shows the state which the seat is attached in the vehicle lower structure of FIG. 図１の車両下部構造における第２クロスメンバ近傍の斜視図である。It is a perspective view of the vicinity of the 2nd cross member in the vehicle lower structure of FIG. 図１の車両下部構造において、ワイヤハーネスを除いた状態を示す斜視図である。It is a perspective view which shows the state which removed the wire harness in the vehicle lower structure of FIG. 図１中のＡ－Ａ線に沿った断面図である。It is sectional drawing which follows the AA line in FIG. 図１の車両下部構造を構成する空調用ダクトの斜視図である。It is a perspective view of the air-conditioning duct which constitutes the vehicle lower structure of FIG.

本発明は、フロアパネル上に、車両前後方向に離間してサイドシルから車幅方向内側に延びた第１クロスメンバ及び第２クロスメンバが設けられ、第１クロスメンバ及び第２クロスメンバの各上面にシートブラケットが取り付けられ、シートブラケットに支持されたシートの下方空間かつ第１クロスメンバと第２クロスメンバとの間に、電装部品と空調用ダクトとが配置された車両下部構造であって、電装部品は、第１クロスメンバ、第２クロスメンバ、サイドシルそれぞれと間隔をあけて配置され、第１クロスメンバに車両前後方向に貫通した孔が設けられ、空調用ダクトが、第１クロスメンバの孔内に配置されて、他のダクトと接続される接続部と、接続部に連なり、第１クロスメンバと電装部品との間に配置され、車幅方向に延びた第１ダクト部と、第１ダクト部に連なり、サイドシルと電装部品との間に配置され、車両前後方向に延びた第２ダクト部と、第２ダクト部に連なり、第２クロスメンバと電装部品との間に配置され、車幅方向に延びた第３ダクト部と、を備え、第３ダクト部における第２ダクト部から離れた端部に、空調風の吹出し口が設けられており、吹出し口は、第２クロスメンバよりも上方に配置されていることを特徴とする車両下部構造である。 In the present invention, a first cross member and a second cross member extending inward in the vehicle width direction from the side sill separated in the vehicle front-rear direction are provided on the floor panel, and the upper surfaces of the first cross member and the second cross member are provided. It is a vehicle lower structure in which a seat bracket is attached to the seat bracket, and an electrical component and an air conditioning duct are arranged in the space below the seat supported by the seat bracket and between the first cross member and the second cross member. The electrical components are arranged at intervals from the first cross member, the second cross member, and the side sill, the first cross member is provided with a hole penetrating in the front-rear direction of the vehicle, and the air-conditioning duct is the first cross member. The first duct part, which is arranged in the hole and connected to other ducts, is connected to the connection part, is placed between the first cross member and the electrical component, and extends in the vehicle width direction, and the first duct part. It is connected to one duct part and is arranged between the side sill and the electrical component, and is connected to the second duct part extending in the front-rear direction of the vehicle and the second duct part, and is arranged between the second cross member and the electrical component. A third duct portion extending in the vehicle width direction is provided, and an air-conditioning air outlet is provided at an end of the third duct portion away from the second duct portion, and the outlet is a second cross member. It is a vehicle lower structure characterized by being arranged above.

上記構成によれば、シートの取付構造を簡素にでき、かつ、シート下の空間を有効利用できる車両下部構造を提供することができる。 According to the above configuration, it is possible to provide a vehicle lower structure that can simplify the seat mounting structure and effectively utilize the space under the seat.

以下、本発明の実施例を図１～６に基づいて説明する。図１に示す車両下部構造１は、自動車に適用される。この自動車は、運転席、助手席、後部座席を備えている。図１中の右側部分に運転席が配置され、図１中の左側部分に助手席が配置され、運転席及び助手席の後方に後部座席が配置される。 Hereinafter, examples of the present invention will be described with reference to FIGS. 1 to 6. The vehicle lower structure 1 shown in FIG. 1 is applied to an automobile. This car has a driver's seat, a passenger seat, and a back seat. The driver's seat is arranged on the right side portion in FIG. 1, the passenger seat is arranged on the left side portion in FIG. 1, and the driver's seat and the rear seat are arranged behind the passenger seat.

本例の車両下部構造１は、運転席とフロアパネル２の間の空間、及び、助手席とフロアパネル２の間の空間それぞれに、各種部品が配置された構造である。具体的には、運転席とフロアパネル２の間に、電装部品（バッテリ）１２、空調用ダクト７、ワイヤハーネス８等が配置されている。また、助手席とフロアパネル２の間に、電装部品（ＤＣ／ＤＣコンバータ）１１、空調用ダクト７、ワイヤハーネス８等が配置されている。 The vehicle lower structure 1 of this example is a structure in which various parts are arranged in each of the space between the driver's seat and the floor panel 2 and the space between the passenger seat and the floor panel 2. Specifically, an electrical component (battery) 12, an air conditioning duct 7, a wire harness 8, and the like are arranged between the driver's seat and the floor panel 2. Further, an electrical component (DC / DC converter) 11, an air conditioning duct 7, a wire harness 8, and the like are arranged between the passenger seat and the floor panel 2.

これら運転席とフロアパネル２間の構造と、助手席とフロアパネル２間の構造とは、ほぼ左右対称であり実質同一である。よって、本明細書では、主に、助手席とフロアパネル２間の構造について説明する。また、これ以降、運転席、助手席を「シート」と呼称する。また、図２に示すように、シート６は、左右一対のシートレール１６にスライド可能に取り付けられており、車両前後方向にスライド可能に設けられている。 The structure between the driver's seat and the floor panel 2 and the structure between the passenger seat and the floor panel 2 are substantially symmetrical and substantially the same. Therefore, in this specification, the structure between the passenger seat and the floor panel 2 will be mainly described. Hereinafter, the driver's seat and the passenger seat will be referred to as "seats". Further, as shown in FIG. 2, the seat 6 is slidably attached to a pair of left and right seat rails 16 and is slidably provided in the front-rear direction of the vehicle.

図１に示すように、フロアパネル２の車幅方向両端部には、車両前後方向に延びたサイドシル３が接合されている。フロアパネル２の車幅方向中央部には、車両前後方向に延びたフロアトンネル２１が設けられている。 As shown in FIG. 1, side sills 3 extending in the front-rear direction of the vehicle are joined to both ends of the floor panel 2 in the vehicle width direction. A floor tunnel 21 extending in the front-rear direction of the vehicle is provided at the center of the floor panel 2 in the vehicle width direction.

左側のサイドシル３とフロアトンネル２１との間には、第１クロスメンバ４及び第２クロスメンバ５が設けられている。これら第１クロスメンバ４及び第２クロスメンバ５は、車両前後方向に離間しており、車幅方向に延びている。また、本例では、第１クロスメンバ４が第２クロスメンバ５の前方に配置されている。同様に、右側のサイドシル３とフロアトンネル２１との間にも、第１クロスメンバ４及び第２クロスメンバ５が設けられている。 A first cross member 4 and a second cross member 5 are provided between the left side sill 3 and the floor tunnel 21. The first cross member 4 and the second cross member 5 are separated from each other in the vehicle front-rear direction and extend in the vehicle width direction. Further, in this example, the first cross member 4 is arranged in front of the second cross member 5. Similarly, a first cross member 4 and a second cross member 5 are also provided between the side sill 3 on the right side and the floor tunnel 21.

第１クロスメンバ４及び第２クロスメンバ５の各上面４１，５１には、シートブラケット９が取り付けられている。詳細には、第１クロスメンバ４上面４１の両端部と第２クロスメンバ５上面５１の両端部にシートブラケット９が取り付けられている。これら４つのシートブラケット９で１つのシート６を支持する。具体的には、図２に示すように、上述した左右一対のシートレール１６のうちの一方が、第１クロスメンバ４の右側のシートブラケット９と第２クロスメンバ５の右側のシートブラケット９とに架け渡されている。また、左右一対のシートレール１６のうちの他方が、第１クロスメンバ４の左側のシートブラケット９と第２クロスメンバ５の左側のシートブラケット９とに架け渡されている。 Seat brackets 9 are attached to the upper surfaces 41 and 51 of the first cross member 4 and the second cross member 5. Specifically, the seat brackets 9 are attached to both ends of the upper surface 41 of the first cross member 4 and both ends of the upper surface 51 of the second cross member 5. One seat 6 is supported by these four seat brackets 9. Specifically, as shown in FIG. 2, one of the pair of left and right seat rails 16 described above includes a seat bracket 9 on the right side of the first cross member 4 and a seat bracket 9 on the right side of the second cross member 5. It is hung on the rail. Further, the other of the pair of left and right seat rails 16 is bridged between the seat bracket 9 on the left side of the first cross member 4 and the seat bracket 9 on the left side of the second cross member 5.

図４，５に示すように、第１クロスメンバ４には、車両前後方向に貫通した孔４０が設けられている。この孔４０内には、上述した空調用ダクト７と他の空調用ダクト１３との接続部分（すなわち、空調用ダクト７の端部と空調用ダクト１３の端部）が配置される。他の空調用ダクト１３は、車両前方に配置された空調装置（不図示）側から空調用ダクト７側に空調風を導くものである。 As shown in FIGS. 4 and 5, the first cross member 4 is provided with a hole 40 penetrating in the front-rear direction of the vehicle. In the hole 40, a connection portion between the above-mentioned air conditioning duct 7 and another air conditioning duct 13 (that is, an end portion of the air conditioning duct 7 and an end portion of the air conditioning duct 13) is arranged. The other air-conditioning duct 13 guides the air-conditioning air from the air-conditioning device (not shown) side arranged in front of the vehicle to the air-conditioning duct 7 side.

図３，４に示すように、左側のシート（助手席）６の下方空間かつ第１クロスメンバ４と第２クロスメンバ５との間には、電装部品１１と空調用ダクト７とワイヤハーネス８とが配置されている。 As shown in FIGS. 3 and 4, the electrical component 11, the air conditioning duct 7, and the wire harness 8 are located in the space below the left seat (passenger seat) 6 and between the first cross member 4 and the second cross member 5. And are arranged.

電装部品１１は、外形が略直方体状である。電装部品１１は、第１クロスメンバ４、第２クロスメンバ５、サイドシル３それぞれと間隔をあけて配置されている。また、電装部品１１は、その長辺が第１クロスメンバ４及び第２クロスメンバ５と平行になる向き、かつ、その短辺がサイドシル３及びフロアトンネル２１と平行になる向きで配置されている。 The electrical component 11 has a substantially rectangular parallelepiped outer shape. The electrical component 11 is arranged at a distance from each of the first cross member 4, the second cross member 5, and the side sill 3. Further, the electrical component 11 is arranged so that its long side is parallel to the first cross member 4 and the second cross member 5, and its short side is parallel to the side sill 3 and the floor tunnel 21. ..

空調用ダクト７は、合成樹脂で構成されている。空調用ダクト７は、図６に示すように、接続部７０と、第１ダクト部７１と、第２ダクト部７２と、第３ダクト部７３と、を一体に備えている。 The air conditioning duct 7 is made of synthetic resin. As shown in FIG. 6, the air-conditioning duct 7 integrally includes a connection portion 70, a first duct portion 71, a second duct portion 72, and a third duct portion 73.

接続部７０は、第１クロスメンバ４の孔４０内に配置されて、他のダクト１３と接続される部位である。第１ダクト部７１は、接続部７０に連なり、第１クロスメンバ４と電装部品１１との間に配置され、車幅方向に延びた部位である。第２ダクト部７２は、第１ダクト部７１に連なり、サイドシル３と電装部品１１との間に配置され、車両前後方向に延びた部位である。第３ダクト部７３は、第２ダクト部７２に連なり、第２クロスメンバ５と電装部品１１との間に配置され、車幅方向に延びた部位である。また、第３ダクト部７３は、第２ダクト部７２側から車幅方向内側に向かうにしたがって上方に向かう方向に延びている。 The connection portion 70 is a portion that is arranged in the hole 40 of the first cross member 4 and is connected to another duct 13. The first duct portion 71 is a portion connected to the connecting portion 70, arranged between the first cross member 4 and the electrical component 11, and extends in the vehicle width direction. The second duct portion 72 is a portion connected to the first duct portion 71, arranged between the side sill 3 and the electrical component 11, and extends in the front-rear direction of the vehicle. The third duct portion 73 is a portion connected to the second duct portion 72, arranged between the second cross member 5 and the electrical component 11, and extends in the vehicle width direction. Further, the third duct portion 73 extends in an upward direction from the second duct portion 72 side toward the inside in the vehicle width direction.

第３ダクト部７３における第２ダクト部７２から離れた端部には、空調風の吹出し口７８が設けられている。図３に示すように、吹出し口７８は、第２クロスメンバ５よりも上方に配置されている。また、図４に示すように、第３ダクト部７３の端部は、第２クロスメンバ５の左側に取り付けられたシートブラケット９の第１クロスメンバ４に近い面９２に沿わされている。吹出し口７８からは、図３中の矢印Ｄで示すように、車両後方かつ車幅方向内側に向かって空調風が吹き出される。すなわち、吹出し口７８から後部座席の足元に向かって空調風が吹き出される。 An air-conditioning air outlet 78 is provided at an end of the third duct portion 73 away from the second duct portion 72. As shown in FIG. 3, the outlet 78 is arranged above the second cross member 5. Further, as shown in FIG. 4, the end portion of the third duct portion 73 is along the surface 92 of the seat bracket 9 attached to the left side of the second cross member 5 near the first cross member 4. As shown by the arrow D in FIG. 3, the conditioned air is blown from the outlet 78 toward the rear of the vehicle and inward in the vehicle width direction. That is, the air-conditioned air is blown from the outlet 78 toward the feet of the rear seats.

上述したように、第３ダクト部７３の端部は、シートブラケット９の前面９２に沿わされて、シートブラケット９の前方に配置されている。このことにより、後部座席の乗員の足が第３ダクト部７３に接触することを防止できる。なお、空調用ダクト７の第３ダクト部７３の端部以外の部分は、第１クロスメンバ４と第２クロスメンバ５の間かつこれらの上面４１，５１よりも下方に配置されているので、後部座席の乗員の足が接触することを防止できる。 As described above, the end portion of the third duct portion 73 is arranged in front of the seat bracket 9 along the front surface 92 of the seat bracket 9. This makes it possible to prevent the feet of the occupants in the rear seats from coming into contact with the third duct portion 73. Since the portion of the air conditioning duct 7 other than the end portion of the third duct portion 73 is arranged between the first cross member 4 and the second cross member 5 and below the upper surfaces 41 and 51 thereof. It is possible to prevent the feet of the occupants in the back seat from coming into contact with each other.

また、第３ダクト部７３における第２ダクト部７２から離れた端部には、車両後方に向かって円柱状に延びた係合部７７が設けられている。この係合部７７は、上述したシートブラケット９の第１クロスメンバ４に近い面９２に設けられた係合孔９３に嵌め込まれる。このことにより、吹出し口７８が所定位置に位置決めされる。 Further, an engaging portion 77 extending in a columnar shape toward the rear of the vehicle is provided at an end portion of the third duct portion 73 away from the second duct portion 72. The engaging portion 77 is fitted into the engaging hole 93 provided in the surface 92 near the first cross member 4 of the seat bracket 9 described above. As a result, the outlet 78 is positioned at a predetermined position.

図６に示すように、第２ダクト部７２の前半部には、車幅方向内側に撓むことが可能な可撓部７６が設けられている。可撓部７６は、山部と谷部とが車両前後方向に交互に設けられた蛇腹状に形成されている。さらに、本例では、可撓部７６をより車幅方向内側に撓み易くするために、可撓部７６の車幅方向の寸法を小さくし、高さ方向の寸法を大きくしている。具体的には、可撓部７６の高さ方向の寸法を車幅方向の寸法の２～３倍程度としている。 As shown in FIG. 6, a flexible portion 76 capable of bending inward in the vehicle width direction is provided in the front half portion of the second duct portion 72. The flexible portion 76 is formed in a bellows shape in which peaks and valleys are alternately provided in the front-rear direction of the vehicle. Further, in this example, in order to make the flexible portion 76 more likely to bend inward in the vehicle width direction, the dimension of the flexible portion 76 in the vehicle width direction is reduced and the dimension in the height direction is increased. Specifically, the dimension of the flexible portion 76 in the height direction is about 2 to 3 times the dimension in the vehicle width direction.

空調用ダクト７を車体に組み付けるにあたっては、接続部７０を第１クロスメンバ４の孔４０内に挿入した状態で係合部７７を係合孔９３に嵌め込む必要がある。空調用ダクト７に可撓部７６が設けられていない場合、作業者は、空調用ダクト７に強い力を加えて撓ませながら係合部７７を係合孔９３に嵌め込む等の作業をしなくてはならず、空調用ダクト７又は周辺部品を破損させる可能性がある。この点において、本例では、上述した可撓部７６が設けられているので、空調用ダクト７を車体に組み付ける際、可撓部７６を撓ませながら容易に組み付けることができる。なお、撓んだ可撓部７６は、空調用ダクト７が車体に組み付けられた後に弾性復元して元の状態に戻る。 When assembling the air conditioning duct 7 to the vehicle body, it is necessary to fit the engaging portion 77 into the engaging hole 93 with the connecting portion 70 inserted into the hole 40 of the first cross member 4. When the flexible portion 76 is not provided in the air conditioning duct 7, the operator performs work such as fitting the engaging portion 77 into the engaging hole 93 while bending the air conditioning duct 7 by applying a strong force. It must be necessary and may damage the air conditioning duct 7 or peripheral parts. In this respect, in this example, since the flexible portion 76 described above is provided, when the air conditioning duct 7 is assembled to the vehicle body, the flexible portion 76 can be easily assembled while being bent. The bent flexible portion 76 is elastically restored after the air conditioning duct 7 is assembled to the vehicle body, and returns to the original state.

図５，６に示すように、第１ダクト部７１の第２ダクト７２寄りの部分には、第１クロスメンバ４に隣接した低背部７４と、低背部７４と電装部品１１との間に位置し、低背部７４よりも高さ寸法が大きい高背部７５と、が設けられている。高背部７５の上面は、低背部７４の上面よりも高い位置に配置されている。低背部７４は、第１クロスメンバ４と電装部品１１との間に位置付けられている。高背部７５は、フロアパネル２と電装部品１１との間、すなわち電装部品１１の下方に位置付けられている。低背部７４の上方かつ第１クロスメンバ４と高背部７５との間には、車幅方向に沿ってワイヤハーネス８が配索されている。 As shown in FIGS. 5 and 6, a portion of the first duct portion 71 near the second duct 72 is located between the low back portion 74 adjacent to the first cross member 4 and the low back portion 74 and the electrical component 11. However, a high-back portion 75 having a height dimension larger than that of the low-back portion 74 is provided. The upper surface of the high back portion 75 is arranged at a position higher than the upper surface of the low back portion 74. The low back portion 74 is positioned between the first cross member 4 and the electrical component 11. The high back portion 75 is positioned between the floor panel 2 and the electrical component 11, that is, below the electrical component 11. A wire harness 8 is arranged above the low back portion 74 and between the first cross member 4 and the high back portion 75 along the vehicle width direction.

上述したように、第１ダクト部７１は、低背部７４を設けることでワイヤハーネス８の配索スペースを確保している。また、高背部７５を設けることで流路断面積を確保している（流路断面積が部分的に小さくなることがないように調整している）。 As described above, the first duct portion 71 is provided with the low back portion 74 to secure the wiring space for the wire harness 8. Further, the cross-sectional area of the flow path is secured by providing the tall portion 75 (adjusted so that the cross-sectional area of the flow path is not partially reduced).

上述したように、車両下部構造１は、第１クロスメンバ４に空調用ダクト７，１３を通す孔４０を設け、電装部品１１を迂回するように空調用ダクト７を配置している。このような構成とすることで、第１クロスメンバ４の上面４１及び第２クロスメンバ５の上面５１にシートブラケット９を取り付けることができ、シート６の取付構造を簡素にできる。また、シート下の限られた空間に、空調用ダクト７の必要風量（流路断面積）を確保した上で、当該空調用ダクト７、電装部品１１、ワイヤハーネス８等の部品を配置でき、シート下の空間を有効利用できる。 As described above, in the vehicle lower structure 1, the first cross member 4 is provided with a hole 40 for passing the air conditioning ducts 7 and 13, and the air conditioning duct 7 is arranged so as to bypass the electrical component 11. With such a configuration, the seat bracket 9 can be attached to the upper surface 41 of the first cross member 4 and the upper surface 51 of the second cross member 5, and the attachment structure of the seat 6 can be simplified. Further, after securing the required air volume (cross-sectional area of the flow path) of the air conditioning duct 7 in the limited space under the seat, parts such as the air conditioning duct 7, electrical components 11, and wire harness 8 can be arranged. The space under the seat can be used effectively.

上述した実施例では、運転席とフロアパネル２の間の空間、及び、助手席とフロアパネル２の間の空間それぞれに各種部品が配置された車両下部構造１を説明した。しかし、本発明の車両下部構造は、少なくとも１つのシートとフロアパネルの間に電装部品と空調用ダクトとが配置された構造であればよい。また、本発明の車両下部構造は、後部座席とフロアパネルの間の空間にも適用することができる。 In the above-described embodiment, the vehicle lower structure 1 in which various parts are arranged in the space between the driver's seat and the floor panel 2 and the space between the passenger seat and the floor panel 2 has been described. However, the vehicle lower structure of the present invention may be a structure in which an electrical component and an air conditioning duct are arranged between at least one seat and a floor panel. The vehicle undercarriage structure of the present invention can also be applied to the space between the rear seats and the floor panel.

また、上述した実施例では、第１クロスメンバ４が第２クロスメンバ５の前方に配置されていたが、本発明においては、第１クロスメンバが第２クロスメンバの後方に配置されていてもよい。その場合、空調用ダクトは、車両後方から前方に向かって空調風を送る構成となる。 Further, in the above-described embodiment, the first cross member 4 is arranged in front of the second cross member 5, but in the present invention, even if the first cross member is arranged behind the second cross member. good. In that case, the air conditioning duct is configured to send air conditioning air from the rear of the vehicle to the front.

なお、前述した実施例は本発明の代表的な形態を示したに過ぎず、本発明は、この実施例に限定されるものではない。即ち、本発明の骨子を逸脱しない範囲で種々変形して実施することができる。かかる変形によってもなお本発明の構成を具備する限り、勿論、本発明の範疇に含まれるものである。 It should be noted that the above-mentioned examples merely show typical embodiments of the present invention, and the present invention is not limited to these examples. That is, it can be variously modified and carried out within a range that does not deviate from the gist of the present invention. As long as the configuration of the present invention is still provided even by such a modification, it is, of course, included in the category of the present invention.

１ 車両下部構造
２ フロアパネル
３ サイドシル
４ 第１クロスメンバ
５ 第２クロスメンバ
６ シート
７ 空調用ダクト
９ シートブラケット
１１，１２ 電装部品 1 Vehicle substructure 2 Floor panel 3 Side sill 4 1st cross member 5 2nd cross member 6 Seat 7 Air conditioning duct 9 Seat bracket 11, 12 Electrical components

Claims (4)

フロアパネル上に、車両前後方向に離間してサイドシルから車幅方向内側に延びた第１クロスメンバ及び第２クロスメンバが設けられ、前記第１クロスメンバ及び前記第２クロスメンバの各上面にシートブラケットが取り付けられ、該シートブラケットに支持されたシートの下方空間かつ前記第１クロスメンバと前記第２クロスメンバとの間に、電装部品と空調用ダクトとが配置された車両下部構造であって、
前記電装部品は、前記第１クロスメンバ、前記第２クロスメンバ、前記サイドシルそれぞれと間隔をあけて配置され、
前記第１クロスメンバに車両前後方向に貫通した孔が設けられ、
前記空調用ダクトが、
前記第１クロスメンバの前記孔内に配置されて、他のダクトと接続される接続部と、
前記接続部に連なり、前記第１クロスメンバと前記電装部品との間に配置され、車幅方向に延びた第１ダクト部と、
前記第１ダクト部に連なり、前記サイドシルと前記電装部品との間に配置され、車両前後方向に延びた第２ダクト部と、
前記第２ダクト部に連なり、前記第２クロスメンバと前記電装部品との間に配置され、車幅方向に延びた第３ダクト部と、を備え、
前記第３ダクト部における前記第２ダクト部から離れた端部に、空調風の吹出し口が設けられており、該吹出し口は、前記第２クロスメンバよりも上方に配置されている
ことを特徴とする車両下部構造。 A first cross member and a second cross member extending inward in the vehicle width direction from the side sill separated from each other in the front-rear direction of the vehicle are provided on the floor panel, and seats are provided on the upper surfaces of the first cross member and the second cross member. It is a vehicle lower structure in which a bracket is attached and an electrical component and an air conditioning duct are arranged in a space below the seat supported by the seat bracket and between the first cross member and the second cross member. ,
The electrical components are arranged at intervals from the first cross member, the second cross member, and the side sill.
The first cross member is provided with a hole penetrating in the front-rear direction of the vehicle.
The air conditioning duct
A connection portion arranged in the hole of the first cross member and connected to another duct, and a connection portion.
A first duct portion connected to the connection portion, arranged between the first cross member and the electrical component, and extending in the vehicle width direction, and a first duct portion.
A second duct portion connected to the first duct portion, arranged between the side sill and the electrical component, and extending in the front-rear direction of the vehicle, and a second duct portion.
It is provided with a third duct portion that is connected to the second duct portion, is arranged between the second cross member and the electrical component, and extends in the vehicle width direction.
An air-conditioning air outlet is provided at an end of the third duct portion away from the second duct portion, and the outlet is arranged above the second cross member. Vehicle lower structure. 前記第３ダクト部における前記第２ダクト部から離れた端部が、前記第２クロスメンバに取り付けられた前記シートブラケットの前記第１クロスメンバに近い面に沿わされている
ことを特徴とする請求項１に記載の車両下部構造。 A claim characterized in that an end portion of the third duct portion away from the second duct portion is along a surface of the seat bracket attached to the second cross member near the first cross member. Item 1. The vehicle lower structure according to item 1. 前記第２ダクト部に、車幅方向内側に撓むことが可能な可撓部が設けられている
ことを特徴とする請求項１又は２に記載の車両下部構造。 The vehicle lower structure according to claim 1 or 2, wherein the second duct portion is provided with a flexible portion capable of bending inward in the vehicle width direction. 前記第１ダクト部に、前記第１クロスメンバに隣接した低背部と、該低背部と前記電装部品との間に位置し、前記低背部よりも高さ寸法が大きい高背部と、が設けられ、
前記低背部の上方かつ前記第１クロスメンバと前記高背部との間にワイヤハーネスが配索される
ことを特徴とする請求項１～３の何れか１項に記載の車両下部構造。 The first duct portion is provided with a low-back portion adjacent to the first cross member and a high-back portion located between the low-back portion and the electrical component and having a height dimension larger than that of the low-back portion. ,
The vehicle lower structure according to any one of claims 1 to 3, wherein a wire harness is arranged above the low back portion and between the first cross member and the high back portion.
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JP2014024382A (en) 2012-07-25 2014-02-06 Suzuki Motor Corp Battery unit attachment structure for vehicle
JP2015074406A (en) 2013-10-11 2015-04-20 日産自動車株式会社 Battery arrangement structure
DE102014110304A1 (en) 2014-07-22 2016-01-28 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Underbody unit for a motor vehicle

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