JP2022146213A - vehicle - Google Patents

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JP2022146213A
JP2022146213A JP2021047055A JP2021047055A JP2022146213A JP 2022146213 A JP2022146213 A JP 2022146213A JP 2021047055 A JP2021047055 A JP 2021047055A JP 2021047055 A JP2021047055 A JP 2021047055A JP 2022146213 A JP2022146213 A JP 2022146213A
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Prior art keywords
vehicle
radiator
side members
internal combustion
combustion engine
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哲也 原澤
Tetsuya HARASAWA
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Isuzu Motors Ltd
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Isuzu Motors Ltd
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Priority to JP2021047055A priority Critical patent/JP2022146213A/en
Priority to PCT/JP2022/011904 priority patent/WO2022202534A1/en
Publication of JP2022146213A publication Critical patent/JP2022146213A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K11/00—Arrangement in connection with cooling of propulsion units
    • B60K11/02—Arrangement in connection with cooling of propulsion units with liquid cooling
    • B60K11/04—Arrangement or mounting of radiators, radiator shutters, or radiator blinds
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P3/00—Liquid cooling
    • F01P3/18—Arrangements or mounting of liquid-to-air heat-exchangers

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Abstract

To provide a vehicle that is able to set a distance between side members regardless of the size of a radiator.SOLUTION: A vehicle 1 includes: a ladder frame 2 having a pair of side members 21a, 21b, which is a pair of girders extending in a longitudinal direction of the vehicle 1 and disposed in parallel in a width direction, and a cross member 23, which is a beam connecting the side members 21a, 21b; an internal combustion engine 5 mounted on the ladder frame 2; and a radiator 3, which is a heat exchanger provided in front of the internal combustion engine 5, circulating between the internal combustion engine 5 and the heat exchanger a refrigerant for cooling the internal combustion engine 5, and cooling the refrigerant by means of heat exchange with outside air, in which the pair of side members 21a, 21b extends through the radiator 3.SELECTED DRAWING: Figure 1

Description

本開示は、車両に関する。 The present disclosure relates to vehicles.

内燃機関を動力源とする車両のように、動力源が発熱する走行体は、動作に支障が無い温度に動力源を維持するために、動力源を冷媒で冷却する。この際、冷媒は冷却対象との熱交換で加熱されるため、冷媒を冷却する必要がある。 A running body whose power source generates heat, such as a vehicle using an internal combustion engine as a power source, cools the power source with a coolant in order to maintain the power source at a temperature that does not hinder its operation. At this time, since the refrigerant is heated by heat exchange with the object to be cooled, it is necessary to cool the refrigerant.

冷媒を冷却する構造として熱交換器が知られている。熱交換機は加熱された冷媒が流れる複数の管体が離間配置されたもので、管体を介して外気と冷媒の間で熱交換を行うことで冷媒を冷却する。内燃機関を冷却する冷媒の熱交換器はラジエータと呼ばれる（特許文献１）。 A heat exchanger is known as a structure for cooling a refrigerant. The heat exchanger has a plurality of spaced tubular bodies through which heated refrigerant flows, and cools the refrigerant by exchanging heat between the outside air and the refrigerant through the tubular bodies. A heat exchanger for cooling an internal combustion engine is called a radiator (Patent Document 1).

実開平０５－１９５２３号公報Japanese Utility Model Laid-Open No. 05-19523

車両のフレーム構造として、車両の前後方向に延びる一対のサイドメンバと、１対のサイドメンバを連結するクロスメンバを有するラダーフレームと呼ばれる構造を車両が有する場合、内燃機関が１対のサイドメンバの間に配置される。そのためラジエータも１対のサイドメンバの間に配置される。この構造では、冷却能力を高くするためにラジエータを車幅方向に長くするとサイドメンバ間の距離がラジエータの幅に合わせて長くなる。 When a vehicle has a structure called a ladder frame, which has a pair of side members extending in the longitudinal direction of the vehicle and a cross member connecting the pair of side members, as the frame structure of the vehicle, the internal combustion engine operates between the pair of side members. placed in between. Therefore, the radiator is also arranged between the pair of side members. In this structure, if the radiator is lengthened in the vehicle width direction in order to increase the cooling capacity, the distance between the side members is increased according to the width of the radiator.

しかしながらサイドメンバ間の距離が長くなると、車幅が同じ場合は操舵輪とサイドメンバ間の距離が短くなるため、操舵輪が旋回する際にサイドメンバに接触しないように操舵輪の切れ角を小さくする必要が生じ、車両の旋回半径が大きくなる問題があった。 However, the longer the distance between the side members, the shorter the distance between the steered wheels and the side members when the vehicle width is the same. There was a problem that the turning radius of the vehicle became large.

本開示は上記課題に鑑みてなされたものであり、ラジエータの寸法によらず、サイドメンバ間の距離を設定可能な車両の提供を目的とする。 The present disclosure has been made in view of the above problems, and aims to provide a vehicle in which the distance between side members can be set regardless of the dimensions of the radiator.

上記の目的を達成するための本開示の一態様は、車両の前後方向に延在して幅方向に並列配置された１対の桁である１対のサイドメンバと前記サイドメンバを連結する梁であるクロスメンバを有するラダーフレームと、前記ラダーフレーム上に搭載された内燃機関と、前記内燃機関の前方に設けられた熱交換器であって前記内燃機関を冷却する冷媒を前記内燃機関との間で循環させ、かつ前記冷媒を外気との熱交換で冷却するラジエータを備える車両であって、１対の前記サイドメンバが前記ラジエータを貫通していることを特徴とする。 One aspect of the present disclosure for achieving the above object is a beam connecting a pair of side members, which are a pair of girders extending in the longitudinal direction of the vehicle and arranged in parallel in the width direction, and the side members. an internal combustion engine mounted on the ladder frame; and a heat exchanger provided in front of the internal combustion engine for cooling the internal combustion engine. The vehicle is provided with a radiator that circulates between the refrigerant and cools the refrigerant by heat exchange with outside air, wherein the pair of side members pass through the radiator.

本開示によれば、ラジエータの寸法によらず、サイドメンバ間の距離を設定可能な車両を提供できる。 According to the present disclosure, it is possible to provide a vehicle in which the distance between the side members can be set regardless of the dimensions of the radiator.

本開示の実施形態に係る車両の概略構成を示す上面図であって、外装や操舵機構は記載を省略している。1 is a top view showing a schematic configuration of a vehicle according to an embodiment of the present disclosure, omitting description of an exterior and a steering mechanism; FIG. 図１のラジエータ近傍の拡大斜視図である。FIG. 2 is an enlarged perspective view of the vicinity of the radiator in FIG. 1; 図２の貫通孔近傍のラジエータの構造を示す図であって、（ａ）は正面図、（ｂ）は貫通孔が設けられていない部分の斜視図である。It is a figure which shows the structure of the radiator near the through-hole of FIG. 2, (a) is a front view, (b) is a perspective view of the part in which the through-hole is not provided. 図１の変形例を示す斜視図である。It is a perspective view which shows the modification of FIG.

以下、図１～図４に基づき本開示の実施形態に係る車両１の構成を説明する。ここでは車両１としてトラックのような貨物車両を例示する。 The configuration of a vehicle 1 according to an embodiment of the present disclosure will be described below with reference to FIGS. 1 to 4. FIG. Here, a freight vehicle such as a truck is exemplified as the vehicle 1 .

図１に示すように車両１はラダーフレーム２、内燃機関５、動力伝達部７、プロペラシャフト１０、デファレンシャルギヤ９、駆動軸１２、後輪１１、前輪１４、及びラジエータ３を備える。 As shown in FIG. 1 , the vehicle 1 includes a ladder frame 2 , an internal combustion engine 5 , a power transmission section 7 , a propeller shaft 10 , a differential gear 9 , a drive shaft 12 , rear wheels 11 , front wheels 14 and a radiator 3 .

ラダーフレーム２は車両１を構成する各装置を支持する梯子型のフレームであり、図１に示すようにサイドメンバ２１ａ、２１ｂ、及びクロスメンバ２３を有する。サイドメンバ２１ａ、２１ｂは、車両１の前後方向であるＸ方向に延在して車両１の幅方向であるＹ方向に並列配置された１対の桁である。クロスメンバ２３は車両１の幅方向であるＹ方向に延在してサイドメンバ２１ａとサイドメンバ２１ｂを連結する梁である。クロスメンバ２３のＹ方向に直交する軸断面の断面積やクロスメンバ２３の数はラダーフレーム２に要求される強度及び重量制限の範囲内で適宜設定する。内燃機関５は車両１の走行に必要な動力を生成する動力源であり、ラダーフレーム２に搭載されてサイドメンバ２１ａ、２１ｂ又はクロスメンバ２３に固定される。車両１が貨物車両の場合、内燃機関５としてディーゼルエンジンを例示できる。動力伝達部７は内燃機関５が生成した動力を走行に適した回転数及びトルクに変換する機構であり、内燃機関５の出力部である図示しないクランクシャフトに連結された変速機及びクラッチを備える。プロペラシャフト１０は動力伝達部７と駆動輪である後輪１１の間が離れている場合に動力を伝達する回転軸であり、動力伝達部７の出力軸に連結される。 The ladder frame 2 is a ladder-shaped frame that supports each device that constitutes the vehicle 1, and has side members 21a and 21b and a cross member 23 as shown in FIG. The side members 21 a and 21 b are a pair of girders extending in the X direction, which is the longitudinal direction of the vehicle 1 , and arranged in parallel in the Y direction, which is the width direction of the vehicle 1 . The cross member 23 is a beam that extends in the Y direction, which is the width direction of the vehicle 1, and connects the side members 21a and 21b. The cross-sectional area of the cross-member 23 perpendicular to the Y direction and the number of cross-members 23 are appropriately set within the limits of the strength and weight required for the ladder frame 2 . The internal combustion engine 5 is a power source that generates power necessary for running the vehicle 1 , is mounted on the ladder frame 2 and fixed to the side members 21 a and 21 b or the cross member 23 . If the vehicle 1 is a freight vehicle, the internal combustion engine 5 can be exemplified by a diesel engine. The power transmission unit 7 is a mechanism that converts the power generated by the internal combustion engine 5 into rotation speed and torque suitable for running, and includes a transmission and a clutch connected to a crankshaft (not shown) that is an output unit of the internal combustion engine 5. . The propeller shaft 10 is a rotating shaft that transmits power when the power transmission section 7 and the rear wheels 11 that are driving wheels are separated, and is connected to the output shaft of the power transmission section 7 .

デファレンシャルギヤ９は、動力伝達機構からプロペラシャフト１０を介して伝達された動力の向きを変えるとともに、車両１の旋回時の左右の駆動輪である後輪１１の回転数の差を吸収するギヤである。駆動軸１２はデファレンシャルギヤ９に連結されて動力を後輪１１に伝達する回転軸である。後輪１１は車両１の４つの車輪のうち、後方に並列配置された２つの車輪であり、駆動軸１２を介してデファレンシャルギヤ９から伝達された動力を路面に伝え、路面との摩擦力で車両１を走行させる車輪である。前輪１４は車両１の４つの車輪のうち、前方に並列配置された２つの操舵輪であり、運転手のハンドルの操作角に応じた旋回角でＺ方向を中心に旋回することで車両１が左右に旋回できるように構成されている。 The differential gear 9 is a gear that changes the direction of the power transmitted from the power transmission mechanism via the propeller shaft 10 and absorbs the difference in the number of revolutions of the rear wheels 11, which are the left and right driving wheels, when the vehicle 1 turns. be. The drive shaft 12 is a rotating shaft that is connected to the differential gear 9 and transmits power to the rear wheels 11 . Of the four wheels of the vehicle 1, the rear wheels 11 are two wheels arranged in parallel at the rear. The power transmitted from the differential gear 9 via the drive shaft 12 is transmitted to the road surface, and the frictional force with the road surface It is a wheel which makes the vehicle 1 run. Of the four wheels of the vehicle 1, the front wheels 14 are the two steered wheels arranged in front in parallel. It is configured so that it can turn left and right.

ラジエータ３は内燃機関５を冷却する冷媒を内燃機関５との間で循環させ、かつ冷媒を外気との熱交換で冷却する熱交換器である。ラジエータ３は、外気である走行風を冷媒に当て易いようにするために車両１の前後方向であるＸ方向において、内燃機関５の前方に設けられる。冷媒は内燃機関５を所望の温度に維持でき、かつ外気で所望の温度に冷却できるものであれば適宜設定できる、水等の冷却水を冷媒として用いるのが一般的であるが、気体を冷媒として用いても良い。 The radiator 3 is a heat exchanger that circulates a coolant for cooling the internal combustion engine 5 between itself and the internal combustion engine 5 and cools the coolant by exchanging heat with the outside air. The radiator 3 is provided in front of the internal combustion engine 5 in the X direction, which is the front-rear direction of the vehicle 1 , so that the running wind, which is the outside air, easily hits the coolant. The coolant can be appropriately set as long as it can maintain the internal combustion engine 5 at a desired temperature and can be cooled to a desired temperature with outside air. You can use it as

図２及び図３に示すように、ラジエータ３はチューブ３５、タンク３１、３３、サポート部材３７、及びフィン６１を備える。 As shown in FIGS. 2 and 3, the radiator 3 includes a tube 35, tanks 31 and 33, support members 37, and fins 61. As shown in FIGS.

チューブ３５は冷媒が流れる複数の管路であり、外気に接する位置、特に走行風が当たる位置に設けられる。図３ではチューブ３５の軸方向が上下方向であるＺ方向を向いており、車両１の幅方向であるＹ方向に所定の間隔で配置されている。このような構造を冷媒の流れる方向にちなんでダウンフローともいう。ただしチューブ３５の向きは軸方向がＹ方向を向くクロスフローでもよい。チューブ３５は冷媒が流れることで加熱され、外気で冷却されるため、内部を流れる冷媒と外気との間でチューブ３５を介して熱交換を行うことで、冷媒を冷却できる。 The tubes 35 are a plurality of conduits through which a coolant flows, and are provided at positions exposed to the outside air, particularly at positions exposed to running wind. In FIG. 3, the axial direction of the tube 35 faces the Z direction, which is the vertical direction, and they are arranged at predetermined intervals in the Y direction, which is the width direction of the vehicle 1 . Such a structure is also called a downflow after the direction in which the refrigerant flows. However, the direction of the tube 35 may be a cross flow in which the axial direction faces the Y direction. Since the tubes 35 are heated by the flow of the refrigerant and cooled by the outside air, the refrigerant can be cooled by exchanging heat between the refrigerant flowing inside and the outside air through the tubes 35 .

タンク３１、３３はチューブ３５の入口と出口に各々接続されて冷媒の入口と出口となる１対の容器である。ここではタンク３１がチューブ３５の入口である上端に設けられ、タンク３３が出口である下端に設けられる。タンク３１には内燃機関５内で加熱された冷媒が排出される内燃機関５側の流路とタンク３１とを接続する入口流路４１が設けられる。タンク３３には冷却後の冷媒が導入される内燃機関５側の流路とタンク３１とを接続する冷媒の出口である出口流路４５が設けられる。 The tanks 31 and 33 are a pair of containers that are connected to the inlet and outlet of the tube 35, respectively, and serve as the inlet and outlet of the refrigerant. Here, the tank 31 is provided at the upper end, which is the inlet of the tube 35, and the tank 33 is provided at the lower end, which is the outlet. The tank 31 is provided with an inlet passage 41 that connects the tank 31 with a passage on the side of the internal combustion engine 5 through which refrigerant heated in the internal combustion engine 5 is discharged. The tank 33 is provided with an outlet channel 45 which is a coolant outlet and connects the tank 31 with a channel on the internal combustion engine 5 side into which the coolant after cooling is introduced.

サポート部材３７はチューブ３５とタンク３１、３３を保持する外枠である。サポート部材３７は図２に示すように左側サポート部材３７ａと右側サポート部材３７ｂを備える。左側サポート部材３７ａは、車両１の前方から見てタンク３１のＹ方向左端とタンク３３のＹ方向左端をＺ方向に連結する板状部材である。右側サポート部材３７ｂは、車両１の前方から見てタンク３１のＹ方向右端とタンク３３のＹ方向右端をＺ方向に連結する板状部材である。この構造ではタンク３１、３３と左側サポート部材３７ａと右側サポート部材３７ｂでチューブ３５を囲んでいる。 A support member 37 is an outer frame that holds the tube 35 and the tanks 31 and 33 . The support member 37 includes a left support member 37a and a right support member 37b as shown in FIG. The left support member 37a is a plate-shaped member that connects the Y-direction left end of the tank 31 and the Y-direction left end of the tank 33 in the Z direction when viewed from the front of the vehicle 1 . The right support member 37b is a plate-like member that connects the Y-direction right end of the tank 31 and the Y-direction right end of the tank 33 in the Z direction when viewed from the front of the vehicle 1 . In this structure, a tube 35 is surrounded by tanks 31 and 33, a left support member 37a and a right support member 37b.

図３に示すフィン６１はチューブ３５を流れる冷媒と外気との間の熱交換を促進する放熱用の板であり、チューブ３５に接続される。フィン６１を設けることで、チューブ３５とフィン６１の間も伝熱の経路になる。そのため、フィン６１に接触した外気もチューブ３５を流れる冷媒を冷却でき、冷却効率を向上させられる。 A fin 61 shown in FIG. 3 is a plate for heat dissipation that promotes heat exchange between the refrigerant flowing through the tube 35 and the outside air, and is connected to the tube 35 . By providing the fins 61, the space between the tube 35 and the fins 61 also becomes a heat transfer path. Therefore, the outside air coming into contact with the fins 61 can also cool the refrigerant flowing through the tubes 35, and the cooling efficiency can be improved.

フィン６１は冷却効率を向上させることができ、かつ重量の制限を満たすものであれば材料や構造は適宜選択できる。ただし、図３に示すように車両１の前後方向であるＸ方向から見て、六角形を並べたハニカム構造であるのが好ましい。具体的にはフィン６１は前端面が台形波になるように板材を折り曲げたものを上下に配置し、かつ上に凸の台形波と下に凸の台形波を上下に対向させてハニカム構造を構成している。 The material and structure of the fins 61 can be appropriately selected as long as the cooling efficiency can be improved and the weight limit is satisfied. However, as shown in FIG. 3, it is preferable to have a honeycomb structure in which hexagons are arranged when viewed from the X direction, which is the front-rear direction of the vehicle 1 . Specifically, the fins 61 are arranged vertically by bending a plate material so that the front end face forms a trapezoidal wave, and the upwardly convex trapezoidal wave and the downwardly convex trapezoidal wave are vertically opposed to form a honeycomb structure. Configure.

このようにフィン６１を正面視でハニカム構造とすることで、車両１が他の車両や構造物に前方から衝突して前方から後方に向けて衝撃が加えられた際に、ハニカム構造のフィン６１が潰れて衝撃を吸収する。そのため、ラジエータ３に衝撃吸収機能を持たせられる。 By forming the fins 61 to have a honeycomb structure when viewed from the front, when the vehicle 1 collides with another vehicle or structure from the front and an impact is applied from the front to the rear, the fins 61 having the honeycomb structure collapses and absorbs impact. Therefore, the radiator 3 can have a shock absorbing function.

図３（ｂ）に示すフィン６１は、台形波の上側の頂点である上側平坦部６３と、下側の頂点である下側平坦部６７と、上側平坦部６３と下側平坦部６７を連結する連結傾斜部６９がある。一方で、図３（ｂ）に示すように連結傾斜部６９は車両１の前方から見て最後端に頂点がある三角形であるため上側平坦部６３は水平ではなく、前方から後方に向けて下方に傾斜している。また下側平坦部６７も水平ではなく、前方から後方にかけて上方に傾斜している。この構造では車両１の前方から後方に向けて上側平坦部６３と下側平坦部６７が、互いの対向面間の距離が狭くなるように傾斜している部分を有する。そのため、水平に配置する場合と比べて走行風が上側平坦部６３と下側平坦部６７に当たりやすくなり、冷却効率の点で益々有利である。 The fin 61 shown in FIG. 3B has an upper flat portion 63 that is the upper vertex of the trapezoidal wave, a lower flat portion 67 that is the lower vertex, and connects the upper flat portion 63 and the lower flat portion 67. There is a connecting ramp 69 for On the other hand, as shown in FIG. 3(b), the connecting inclined portion 69 is a triangle having a vertex at the rearmost end when viewed from the front of the vehicle 1. Therefore, the upper flat portion 63 is not horizontal, but downward from the front to the rear. inclined to The lower flat portion 67 is also not horizontal, but slopes upward from the front to the rear. In this structure, the upper flat portion 63 and the lower flat portion 67 have portions that are inclined from the front to the rear of the vehicle 1 so that the distance between the surfaces facing each other is narrowed. Therefore, compared with the case of horizontal arrangement, the running wind more easily hits the upper flat portion 63 and the lower flat portion 67, which is more advantageous in terms of cooling efficiency.

図１及び図２に示すように車両１は１対のサイドメンバ２１ａ、２１ｂがラジエータ３を貫通している。そのため、図１に示すサイドメンバ２１ａとサイドメンバ２１ｂの間の幅Ｌ１がラジエータ３の幅Ｌ２以下になる。そのため、車両１はラジエータ３の寸法、ここでは幅Ｌ２によらずサイドメンバ２１ａとサイドメンバ２１ｂ間の幅Ｌ１を設定できる。よって、例えば冷却能力を向上させるためにラジエータ３の幅Ｌ２を大きくしても、サイドメンバ２１ａ、２１ｂを貫通させる空間をラジエータ３に確保できれば、サイドメンバ２１ａ、２１ｂ間の幅Ｌ１はラジエータ３の幅Ｌ２とは独立して設計できる。これにより、ラジエータ３の幅Ｌ２を大きくしてもサイドメンバ２１ａ、２１ｂと前輪１４との間の距離Ｄを短くする必要がないため、ラジエータ３の幅Ｌ２を長くしても前輪１４の切れ角が小さくなる恐れもない。 As shown in FIGS. 1 and 2, the vehicle 1 has a pair of side members 21a and 21b passing through the radiator 3. As shown in FIGS. Therefore, the width L1 between the side member 21a and the side member 21b shown in FIG. 1 becomes the width L2 of the radiator 3 or less. Therefore, the vehicle 1 can set the width L1 between the side members 21a and 21b regardless of the dimensions of the radiator 3, here the width L2. Therefore, for example, even if the width L2 of the radiator 3 is increased in order to improve the cooling capacity, the width L1 between the side members 21a and 21b is the same as the width L1 of the radiator 3 as long as the space through which the side members 21a and 21b pass can be secured in the radiator 3. It can be designed independently of the width L2. This eliminates the need to shorten the distance D between the side members 21a, 21b and the front wheels 14 even if the width L2 of the radiator 3 is increased. There is no fear that the

サイドメンバ２１ａ、２１ｂがラジエータ３を貫通する構造として、具体的には２つの例を挙げられる。まず第１の例は図２及び図３（ａ）に示すようにラジエータ３にサイドメンバ２１ａ、２１ｂが貫通する貫通孔８１を車両１の前後方向であるＸ方向に形成した構造である。この構造ではサイドメンバ２１ａ、２１ｂが貫通孔８１を貫通する。 As a structure in which the side members 21a and 21b pass through the radiator 3, there are specifically two examples. The first example is a structure in which through holes 81 through which the side members 21a and 21b pass are formed in the radiator 3 in the X direction, which is the longitudinal direction of the vehicle 1, as shown in FIGS. 2 and 3(a). In this structure, the side members 21a and 21b pass through the through holes 81. As shown in FIG.

なお、貫通孔８１を設ける位置にチューブ３５やフィン６１は設けられない。そのため車両１では、貫通孔８１を設ける位置からチューブ３５やフィン６１を撤去するか、貫通孔８１を設ける位置から予めチューブ３５やフィン６１を避けて設計したラジエータ３を用いる。図３（ａ）では貫通孔８１を設ける位置からフィン６１を撤去した例を示している。 The tube 35 and the fins 61 are not provided at the position where the through hole 81 is provided. Therefore, in the vehicle 1, the radiator 3 is designed such that the tube 35 and the fins 61 are removed from the position where the through hole 81 is provided, or the tube 35 and the fin 61 are avoided from the position where the through hole 81 is provided. FIG. 3A shows an example in which the fins 61 are removed from the positions where the through holes 81 are provided.

貫通孔８１の形状、寸法はサイドメンバ２１ａ、２１ｂが貫通できるのであれば適宜設定できる。ただしサイドメンバ２１ａ、２１ｂと比べて極端に形状、寸法が異なると貫通孔８１とサイドメンバ２１ａ、２１ｂの間の隙間が大きくなり、無駄なスペースが生じて冷却効率も向上しない。そのため貫通孔８１の形状はサイドメンバ２１ａ、２１ｂの相似形状で、若干寸法が大きい程度が好ましい。 The shape and dimensions of the through hole 81 can be appropriately set as long as the side members 21a and 21b can pass through it. However, if the shape and dimensions are extremely different from those of the side members 21a and 21b, the gap between the through-hole 81 and the side members 21a and 21b becomes large, creating a wasted space and not improving the cooling efficiency. Therefore, it is preferable that the shape of the through-hole 81 is similar to that of the side members 21a and 21b and slightly larger.

サイドメンバ２１ａ、２１ｂがラジエータ３を貫通するための構造として、第２の例は図４に示すように車両前後方向から見てラジエータ３のＹ方向の両側面に溝部８３を設ける構造がある。この場合は溝部８３同士のＹ方向距離Ｌ４がサイドメンバ２１ａとサイドメンバ２１ｂの幅方向距離になる。Ｙ方向距離Ｌ４を短くしたい場合は溝部８３のＹ方向深さＬ３を深くすればよい。また、溝部８３を設けることでサポート部材３７が上下に分断される場合は図４に示すように連結板５８等の連結部材で分断された部分を連結する。溝部８３の形状は貫通孔８１の形状と同様にサイドメンバ２１ａ、２１ｂの相似形状で、若干寸法が大きい程度が好ましい。ただしＹ方向距離Ｌ４を短くするために溝部８３のＹ方向深さＬ３を深くするほど、サイドメンバ２１ａ、２１ｂとサポート部材３７の間のＹ方向の隙間が大きくなる。 As a structure for the side members 21a and 21b to pass through the radiator 3, a second example is a structure in which grooves 83 are provided on both sides in the Y direction of the radiator 3 as viewed from the vehicle front-rear direction, as shown in FIG. In this case, the Y-direction distance L4 between the grooves 83 is the width-direction distance between the side members 21a and 21b. If it is desired to shorten the Y-direction distance L4, the Y-direction depth L3 of the groove portion 83 may be increased. Further, when the support member 37 is vertically divided by providing the groove portion 83, the divided portions are connected by a connecting member such as a connecting plate 58 as shown in FIG. It is preferable that the shape of the groove portion 83 is similar to that of the side members 21a and 21b like the shape of the through hole 81, and that the dimensions thereof are slightly larger. However, as the Y-direction depth L3 of the groove portion 83 is increased in order to shorten the Y-direction distance L4, the Y-direction gap between the side members 21a and 21b and the support member 37 is increased.

貫通孔８１を設けるか、溝部８３を設けるかは、各々の利点を考慮して適宜設定すればよい。貫通孔８１を設ける場合、貫通孔８１の寸法はサイドメンバ２１ａ、２１ｂより若干大きい程度でよい。そのため、溝部８３を設ける場合と比べてチューブ３５の数やフィン６１の面積を極力減らさずにサイドメンバ２１ａとサイドメンバ２１ｂ間の幅Ｌ１を短くできる点で有利である。一方で溝部８３を設ける構造では、貫通孔８１を設けなくてもサイドメンバ２１ａとサイドメンバ２１ｂ間の幅Ｌ１を短くできる点で有利である。以下の説明では貫通孔８１を設ける場合を例に説明する。 Whether the through hole 81 is provided or the groove portion 83 is provided may be appropriately set in consideration of respective advantages. When the through hole 81 is provided, the size of the through hole 81 may be slightly larger than that of the side members 21a and 21b. Therefore, it is advantageous in that the width L1 between the side members 21a and 21b can be shortened without reducing the number of tubes 35 and the area of the fins 61 as much as possible as compared with the case where the grooves 83 are provided. On the other hand, the structure in which the groove portion 83 is provided is advantageous in that the width L1 between the side member 21a and the side member 21b can be shortened without providing the through hole 81. FIG. In the following description, the case where the through hole 81 is provided will be described as an example.

ラジエータ３を貫通したサイドメンバ２１ａ、２１ｂは、ラジエータ３に固定する固定手段を設ける等して、ラジエータ３に固定してもよいし、固定手段を設けずに固定しなくても良い。固定する場合はラジエータ３がクロスメンバ２３の１つとしても機能するため、他のクロスメンバ２３の数を減らしたり、Ｙ方向に直交する面の断面積を小さくしたりできる点で有利である。一方でサイドメンバ２１ａ、２１ｂをラジエータ３に固定しない場合は固定手段が不要であるため、構造が単純になり、コストや生産性の面で有利である。 The side members 21a and 21b passing through the radiator 3 may be fixed to the radiator 3 by providing fixing means for fixing them to the radiator 3, or may not be fixed without providing fixing means. When fixed, the radiator 3 also functions as one of the cross members 23, which is advantageous in that the number of other cross members 23 can be reduced and the cross-sectional area of the plane orthogonal to the Y direction can be reduced. On the other hand, when the side members 21a and 21b are not fixed to the radiator 3, no fixing means is required, which simplifies the structure and is advantageous in terms of cost and productivity.

固定手段を設ける場合、ラジエータ３とサイドメンバ２１ａ、２１ｂを固定できるのであれば具体的な固定手段の構造は適宜選択できるが、図２に示すようなＬ字状部材５１を用いた構成を例示できる。 When the fixing means is provided, a specific structure of the fixing means can be appropriately selected as long as the radiator 3 and the side members 21a and 21b can be fixed. can.

Ｌ字状部材５１は図２に示すように平板がＬ字状に折り曲げられた形状の板状部材である。
Ｌ字状部材５１はＬ字の外側の１つの面であり、Ｙ方向に延在するＹ方向延在面５３がサポート部材３７の背面に溶接等の公知の接合手段で接合される。さらに、外側の他の面であり、Ｘ方向に延在するＸ方向延在面５５がサイドメンバ２１ａ、２１ｂの外側の側面にボルト５７でボルト締結される。具体的にはボルト５７がサイドメンバ２１ａ、２１ｂを貫通して図示しないナットと螺合して、ボルト５７とナットでサイドメンバ２１ａ、２１ｂを挟み込んで締結する構造が挙げられる。ただし、サイドメンバ２１ａ、２１ｂの側面に雌ネジを切ってボルト５７を螺合させてもよい。 The L-shaped member 51 is a plate-shaped member formed by bending a flat plate into an L-shape as shown in FIG.
The L-shaped member 51 is one surface on the outer side of the L-shape, and a Y-direction extending surface 53 extending in the Y direction is joined to the rear surface of the support member 37 by a known joining means such as welding. Furthermore, an X-direction extending surface 55, which is another outer surface and extends in the X direction, is bolted to the outer side surfaces of the side members 21a and 21b with bolts 57. As shown in FIG. Specifically, there is a structure in which the bolt 57 penetrates the side members 21a and 21b and is screwed with a nut (not shown), and the side members 21a and 21b are clamped by the bolt 57 and the nut. However, the side members 21a and 21b may be internally threaded and the bolts 57 may be screwed together.

この構成ではラジエータ３の外枠であるサポート部材３７を介してサイドメンバ２１ａ、２１ｂとラジエータ３の相互に荷重が伝達される。そのため、フィン６１やチューブ３５にサイドメンバ２１ａ、２１ｂを固定する場合と比べて強度に優れる。以上が本開示の実施形態に係る車両１の構成の説明である。 In this configuration, the load is transmitted between the side members 21 a and 21 b and the radiator 3 via the support member 37 that is the outer frame of the radiator 3 . Therefore, compared with the case where the side members 21a and 21b are fixed to the fins 61 and the tube 35, the strength is excellent. The above is the description of the configuration of the vehicle 1 according to the embodiment of the present disclosure.

このように本実施形態の車両１は、ラダーフレーム２と、ラダーフレーム２上に搭載された内燃機関５と、内燃機関５の前方に設けられたラジエータ３を備え、ラダーフレーム２を構成する１対のサイドメンバ２１ａ、２１ｂがラジエータ３を貫通している。 As described above, the vehicle 1 of the present embodiment includes a ladder frame 2, an internal combustion engine 5 mounted on the ladder frame 2, and a radiator 3 provided in front of the internal combustion engine 5. A pair of side members 21 a and 21 b penetrate the radiator 3 .

この構成ではサイドメンバ２１ａとサイドメンバ２１ｂの間の幅Ｌ１がラジエータ３の幅Ｌ２以下になる。そのためラジエータ３の寸法によらずサイドメンバ２１ａとサイドメンバ２１ｂの間の幅Ｌ１を設定できる。 In this configuration, the width L1 between the side members 21a and 21b is equal to or less than the width L2 of the radiator 3. As shown in FIG. Therefore, the width L1 between the side members 21a and 21b can be set regardless of the dimensions of the radiator 3. FIG.

以上、実施形態に基づき本開示を説明したが本開示は実施形態に限定されない。当業者であれば本開示の技術思想の範囲内において各種変形例及び改良例に想到するのは当然のことであり、これらも当然に本開示に含まれる。 Although the present disclosure has been described above based on the embodiments, the present disclosure is not limited to the embodiments. It is a matter of course that a person skilled in the art can come up with various modifications and improvements within the scope of the technical idea of the present disclosure, and these are naturally included in the present disclosure.

１ ：車両
２ ：ラダーフレーム
３ ：ラジエータ
５ ：内燃機関
７ ：動力伝達部
９ ：デファレンシャルギヤ
１０ ：プロペラシャフト
１１ ：後輪
１４ ：前輪
２１ａ、２１ｂ ：サイドメンバ
２３ ：クロスメンバ
３１、３３ ：タンク
３５ ：チューブ
３７ ：サポート部材
３７ａ ：左側サポート部材
３７ｂ ：右側サポート部材
４１ ：入口流路
４５ ：出口流路
５１ ：Ｌ字状部材
５３ ：Ｙ方向延在面
５５ ：Ｘ方向延在面
５７ ：ボルト
５８ ：連結板
６１ ：フィン
６３ ：上側平坦部
６７ ：下側平坦部
６９ ：連結傾斜部
８１ ：貫通孔
８３ ：溝部 Reference Signs List 1: Vehicle 2: Ladder frame 3: Radiator 5: Internal combustion engine 7: Power transmission unit 9: Differential gear 10: Propeller shaft 11: Rear wheels 14: Front wheels 21a, 21b: Side members 23: Cross members 31, 33: Tank 35 : Tube 37 : Support member 37a : Left support member 37b : Right support member 41 : Inlet channel 45 : Outlet channel 51 : L-shaped member 53 : Y-direction extending surface 55 : X-direction extending surface 57 : Bolt 58 : connecting plate 61 : fin 63 : upper flat portion 67 : lower flat portion 69 : connecting inclined portion 81 : through hole 83 : groove

Claims (6)

車両の前後方向に延在して幅方向に並列配置された１対の桁である１対のサイドメンバと前記サイドメンバを連結する梁であるクロスメンバを有するラダーフレームと、前記ラダーフレーム上に搭載された内燃機関と、前記内燃機関の前方に設けられた熱交換器であって前記内燃機関を冷却する冷媒を前記内燃機関との間で循環させ、かつ前記冷媒を外気との熱交換で冷却するラジエータを備える車両であって、
１対の前記サイドメンバが前記ラジエータを貫通していることを特徴とする車両。 a ladder frame having a pair of side members, which are a pair of girders extending in the longitudinal direction of the vehicle and arranged in parallel in the width direction; and a cross member, which is a beam connecting the side members; A mounted internal combustion engine and a heat exchanger provided in front of the internal combustion engine for circulating a refrigerant for cooling the internal combustion engine between the internal combustion engine and exchanging heat with the outside air. A vehicle comprising a cooling radiator,
A vehicle, wherein the pair of side members pass through the radiator. １対の前記サイドメンバを前記ラジエータに固定する固定手段を備える請求項１に記載の車両。 2. A vehicle according to claim 1, further comprising fixing means for fixing the pair of side members to the radiator. 前記ラジエータは、
外気と接する位置に設けられて前記冷媒が流れる管体であるチューブと、前記チューブの入口と出口に各々接続されて前記冷媒の入口と出口となる容器である１対のタンクと、前記タンク及び前記チューブを保持する外枠であるサポート部材を備え、
前記固定手段は、平板がＬ字状に折り曲げられた形状の板状部材であり、Ｌ字の外側の１つの面が前記サポート部材に接合され、外側の他の面が前記クロスメンバの側面にボルト締結される請求項２に記載の車両。 The radiator is
A tube that is a tubular body provided at a position in contact with the outside air and through which the refrigerant flows, a pair of tanks that are containers that are connected to the inlet and outlet of the tube and serve as the inlet and outlet of the refrigerant, the tank and A support member that is an outer frame that holds the tube,
The fixing means is a plate-shaped member formed by bending a flat plate into an L-shape, and one outer surface of the L-shape is joined to the support member, and the other outer surface is attached to the side surface of the cross member. 3. Vehicle according to claim 2, which is bolted. 前記ラジエータは、前記車両の前後方向に貫通する貫通孔を備え、
前記サイドメンバは前記貫通孔を貫通する請求項１～３のいずれか一項に記載の車両。 The radiator has a through hole penetrating in the longitudinal direction of the vehicle,
The vehicle according to any one of claims 1 to 3, wherein the side member penetrates through the through hole. 前記ラジエータは前記車両の前後方向から見て両側面に溝部を備え、
前記サイドメンバは前記溝部を貫通する請求項１～３のいずれか一項に記載の車両。 The radiator has grooves on both side surfaces when viewed from the front-rear direction of the vehicle,
The vehicle according to any one of claims 1 to 3, wherein the side member penetrates through the groove. 前記ラジエータは、前記チューブに接続された放熱用のフィンを備え、
前記フィンが前記車両の前後方向から見てハニカム構造である請求項３に記載の車両。 The radiator includes fins for heat dissipation connected to the tube,
4. The vehicle according to claim 3, wherein said fins have a honeycomb structure when viewed from the longitudinal direction of said vehicle.
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JP6632869B2 (en) * 2015-11-09 2020-01-22 アイシン精機株式会社 Radiator support member
JP2017095049A (en) * 2015-11-27 2017-06-01 いすゞ自動車株式会社 Vehicular cooling apparatus
JP2020152274A (en) * 2019-03-20 2020-09-24 いすゞ自動車株式会社 Vehicle structure

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