JP2023156809A - Engine heat shield structure - Google Patents

Engine heat shield structure Download PDF

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JP2023156809A
JP2023156809A JP2022066392A JP2022066392A JP2023156809A JP 2023156809 A JP2023156809 A JP 2023156809A JP 2022066392 A JP2022066392 A JP 2022066392A JP 2022066392 A JP2022066392 A JP 2022066392A JP 2023156809 A JP2023156809 A JP 2023156809A
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heat shield
support member
engine
vehicle
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JP7347574B1 (en
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達也 飯島
Tatsuya Iijima
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Isuzu Motors Ltd
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Isuzu Motors Ltd
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Abstract

To prevent the temperature of a load-carrying platform from easily rising due to heat from an engine in an engine heat shield structure.SOLUTION: An engine heat shield structure S includes: an engine 1 disposed below a vehicle cab A in a vehicle height direction; and a load-carrying platform 2 disposed at a back side of the cab A in a vehicle front-back direction. The load-carrying platform 2 includes: a floor plate 21 forming a floor; and a heat shield plate 22 disposed below the floor plate 21 to prevent the floor plate 21 from being heated by heat from the engine 1. In addition, a space forming an air space is disposed between the floor plate 21 and the heat shield plate 22.SELECTED DRAWING: Figure 1

Description

本発明は、車両に設けられているエンジン遮熱構造に関する。 The present invention relates to an engine heat shield structure provided in a vehicle.

従来、荷台を有するキャブオーバ型車両が知られている。特許文献１には、キャブの下にエンジンルームを有するキャブオーバ型車両が開示されている。 Conventionally, cab-over type vehicles having a loading platform are known. Patent Document 1 discloses a cab-over type vehicle having an engine room under the cab.

実開昭６２－１５６５８４号公報Utility Model Publication No. 62-156584

荷台を有するキャブオーバ型車両が走行すると、キャブ下に配置されたエンジンにより加熱された空気がキャブ後方荷台の下方に流れることで荷台の温度が上昇してしまうという問題が生じていた。 When a cab-over type vehicle having a loading platform runs, air heated by an engine disposed under the cab flows below the loading platform behind the cab, causing a problem in that the temperature of the loading platform increases.

そこで、本発明はこの点に鑑みてなされたものであり、エンジンからの熱によって荷台の温度が上昇しづらいエンジン遮熱構造を提供することを目的とする。 Therefore, the present invention has been made in view of this point, and an object of the present invention is to provide an engine heat shielding structure that makes it difficult for the temperature of a loading platform to rise due to heat from the engine.

本発明の第１の態様においては、車両のキャブの前記車両の高さ方向における下方に設けられたエンジンと、前記キャブの前記車両の前後方向における後方に設けられた荷台と、を有し、前記荷台は、床を形成する床板と、前記床板の下方に設けられ、前記エンジンからの熱によって前記床板が加熱されることを防止する遮熱板と、を有するエンジン遮熱構造を提供する。 A first aspect of the present invention includes an engine provided below a cab of a vehicle in a height direction of the vehicle, and a loading platform provided at a rear of the cab in a longitudinal direction of the vehicle; The loading platform provides an engine heat shielding structure including a floor plate forming a floor and a heat shield plate provided below the floor plate to prevent the floor plate from being heated by heat from the engine.

また、前記床板と前記遮熱板との間には、空気層を形成する空間が設けられていてもよい。 Further, a space forming an air layer may be provided between the floor plate and the heat shield plate.

また、前記床板の下方に設けられており、前記車両の車幅方向において延在する第１支持部材と、前記床板の下方において、前記第１支持部材よりも前記前後方向における後方に設けられており、前記車幅方向において延在する第２支持部材と、をさらに有し、前記遮熱板は、前記空間の下方に位置する第１領域と、前記第１領域の前記前後方向における前端から前記床板に向かって延在する第２領域と、前記第２領域の前記高さ方向における上端から前方に向かって延在する第３領域と、前記第１領域の前記前後方向における後端から前記床板に向かって延在する第４領域と、前記第４領域の前記高さ方向における上端から後方に向かって延在する第５領域と、を有し、前記第３領域は、前記床板と前記第１支持部材との間に挟まれた状態で、前記床板に固定されており、前記第５領域は、前記床板と前記第２支持部材との間に挟まれた状態で、前記床板に固定されていてもよい。 a first support member provided below the floorboard and extending in the vehicle width direction of the vehicle; and a first support member provided below the floorboard and rearward of the first support member in the longitudinal direction; and a second support member extending in the vehicle width direction, and the heat shield plate includes a first region located below the space and a front end of the first region in the longitudinal direction. a second region extending toward the floorboard; a third region extending forward from the upper end of the second region in the height direction; and a third region extending from the rear end of the first region in the front-rear direction to the It has a fourth region extending toward the floorboard, and a fifth region extending rearward from the upper end of the fourth region in the height direction, and the third region is arranged between the floorboard and the The fifth region is fixed to the floorboard while being sandwiched between the first support member, and the fifth region is fixed to the floorboard while being sandwiched between the floorboard and the second support member. may have been done.

また、前記第２領域と前記第１支持部材との間、及び、前記第４領域と前記第２支持部材との間には隙間が形成されており、前記第２領域が前記第１支持部材に接しておらず、前記第４領域が前記第２支持部材に接していなくてもよい。 Further, gaps are formed between the second region and the first support member and between the fourth region and the second support member, and the second region is connected to the first support member. The fourth region may not be in contact with the second support member.

また、前記遮熱板は、前記第１領域の前記車幅方向における左端から前記床板に向かって延在し、前記空間の少なくとも一部を閉じる第６領域と、前記第１領域の前記車幅方向における右端から前記床板に向かって延在し、前記空間の少なくとも一部を閉じる第７領域と、をさらに有していてもよい。 The heat shield plate may include a sixth region extending from the left end in the vehicle width direction of the first region toward the floor plate and closing at least a portion of the space; The space may further include a seventh region extending from the right end in the direction toward the floor plate and closing at least a portion of the space.

また、前記第６領域は、前記第２領域と前記第４領域とのいずれにも接しておらず、前記第６領域と前記第２領域との間、及び、前記第６領域と前記第４領域との間に、前記遮熱板の外へ水を排出するための空隙が形成され、前記第７領域は、前記第２領域と前記第４領域とのいずれにも接しておらず、前記第７領域と前記第２領域との間、及び、前記第７領域と前記第４領域との間に、前記遮熱板の外へ水を排出するための空隙が形成されていてもよい。 Further, the sixth region is not in contact with either the second region or the fourth region, and is located between the sixth region and the second region, and between the sixth region and the fourth region. A gap for discharging water to the outside of the heat shield plate is formed between the seventh area and the seventh area, and the seventh area is not in contact with either the second area or the fourth area, and the seventh area is not in contact with either the second area or the fourth area. A gap may be formed between the seventh region and the second region and between the seventh region and the fourth region for discharging water to the outside of the heat shield plate.

本発明によれば、エンジン遮熱構造において、エンジンからの熱によって荷台の温度が上昇しづらくなるという効果を奏する。 According to the present invention, in the engine heat shielding structure, there is an effect that the temperature of the loading platform is difficult to rise due to heat from the engine.

本実施形態に係るエンジン遮熱構造が車両に設けられている状態を示す。1 shows a state in which the engine heat shield structure according to the present embodiment is installed in a vehicle. 荷台の遮熱板付近の構造を示す。The structure near the heat shield plate of the loading platform is shown. 図２のＸ－Ｘ線断面図である。3 is a sectional view taken along the line XX in FIG. 2. FIG. 図２のＹ－Ｙ線断面図である。FIG. 3 is a sectional view taken along the YY line in FIG. 2;

［エンジン遮熱構造Ｓが車両に設けられている状態］
図１は、本実施形態に係るエンジン遮熱構造Ｓが車両に設けられている状態を示す図である。図２は、荷台２の遮熱板２２付近の構造を示す図である。図２は、荷台２を下面側から見た図である。 [State where the engine heat shield structure S is provided on the vehicle]
FIG. 1 is a diagram showing a state in which an engine heat shielding structure S according to the present embodiment is provided in a vehicle. FIG. 2 is a diagram showing the structure around the heat shield plate 22 of the loading platform 2. As shown in FIG. FIG. 2 is a diagram of the loading platform 2 viewed from the bottom side.

エンジン遮熱構造Ｓは、エンジン１、荷台２、第１支持部材３、及び第２支持部材４を有する。エンジン１は、車両のキャブＡの車両の高さ方向における下方に設けられている。車両は、キャブオーバ型の車両である。車両は、例えば平ボディのトラックである。キャブＡは、例えば、運転席が設けられた箱形状のキャビン部分である。エンジン１は、例えばガソリンエンジン又はディーゼルエンジンである。 The engine heat shield structure S includes an engine 1, a loading platform 2, a first support member 3, and a second support member 4. The engine 1 is provided below a cab A of a vehicle in the height direction of the vehicle. The vehicle is a cab-over type vehicle. The vehicle is, for example, a flat body truck. Cab A is, for example, a box-shaped cabin portion in which a driver's seat is provided. Engine 1 is, for example, a gasoline engine or a diesel engine.

荷台２は、キャブＡの車両の前後方向における後方に設けられている。荷台２は、床板２１、及び遮熱板２２を有する。床板２１は、荷台２の床を形成する。床板２１は、例えば木製である。 The loading platform 2 is provided at the rear of the cab A in the longitudinal direction of the vehicle. The loading platform 2 has a floor plate 21 and a heat shield plate 22. The floor plate 21 forms the floor of the loading platform 2. The floorboard 21 is made of wood, for example.

遮熱板２２は、床板２１の下方に設けられ、エンジン１からの熱によって床板２１が加熱されることを防止する。遮熱板２２は、例えば金属製である。遮熱板２２の厚さは、例えば０．５ｍｍから３．０ｍｍの範囲内であり、具体的には０．８ｍｍ程度であってもよい。遮熱板２２の詳細については後述する。 The heat shield plate 22 is provided below the floor plate 21 and prevents the floor plate 21 from being heated by heat from the engine 1. The heat shield plate 22 is made of metal, for example. The thickness of the heat shield plate 22 is, for example, within a range of 0.5 mm to 3.0 mm, and specifically may be about 0.8 mm. Details of the heat shield plate 22 will be described later.

第１支持部材３は、床板２１の下方に設けられており、車両の車幅方向において延在する部材である。第１支持部材３は、例えば金属製である。第１支持部材３は、荷台２の車両の前後方向における前端付近に設けられている。 The first support member 3 is a member that is provided below the floor plate 21 and extends in the width direction of the vehicle. The first support member 3 is made of metal, for example. The first support member 3 is provided near the front end of the loading platform 2 in the longitudinal direction of the vehicle.

第２支持部材４は、床板２１の下方において、第１支持部材３よりも車両の前後方向における後方に設けられており、車両の車幅方向において延在する部材である。第２支持部材４は、例えば木製である。 The second support member 4 is a member that is provided below the floorboard 21 and rearward of the first support member 3 in the longitudinal direction of the vehicle, and extends in the width direction of the vehicle. The second support member 4 is made of wood, for example.

第１支持部材３及び第２支持部材４は、車両の前後方向において延在する複数のサイドフレーム（不図示）の上面に設けられている。 The first support member 3 and the second support member 4 are provided on the upper surface of a plurality of side frames (not shown) extending in the longitudinal direction of the vehicle.

［遮熱板２２の構造］
図３は、図２のＸ－Ｘ線断面図である。
遮熱板２２は、第１領域２２１、第２領域２２２、第３領域２２３、第４領域２２４、及び第５領域２２５を有する。遮熱板２２は、一例として、一枚の金属板をプレス加工することによって形成された部品である。遮熱板２２は、床板２１との間に空気層を形成するように、床板２１の下面に取り付けられている。 [Structure of heat shield plate 22]
FIG. 3 is a sectional view taken along the line XX in FIG. 2.
The heat shield plate 22 has a first region 221 , a second region 222 , a third region 223 , a fourth region 224 , and a fifth region 225 . The heat shield plate 22 is, for example, a component formed by pressing a single metal plate. The heat shield plate 22 is attached to the lower surface of the floor plate 21 so as to form an air layer between the heat shield plate 22 and the floor plate 21 .

第１領域２２１は、空気層を形成する空間の下方に位置する領域である。第１領域２２１は、車両の前後方向、かつ車両の車幅方向において延在している。第１領域２２１は、車両の前後方向において第１支持部材３と第２支持部材４との間に位置する。第１領域２２１は、必ずしも床板２１と平行である必要はないが、本実施形態では、一例として第１領域２２１は床板２１と平行である。床板２１と遮熱板２２との間の長さは、例えば３ｍｍから３０ｍｍの範囲内であり、具体的には９．２ｍｍ程度であってもよい。 The first region 221 is a region located below a space forming an air layer. The first region 221 extends in the longitudinal direction of the vehicle and in the vehicle width direction of the vehicle. The first region 221 is located between the first support member 3 and the second support member 4 in the longitudinal direction of the vehicle. Although the first region 221 does not necessarily have to be parallel to the floorboard 21, in this embodiment, the first region 221 is parallel to the floorboard 21, as an example. The length between the floor plate 21 and the heat shield plate 22 is, for example, in the range of 3 mm to 30 mm, and specifically may be about 9.2 mm.

第２領域２２２は、第１領域２２１の車両の前後方向における前端から床板２１に向かって延在する領域である。第２領域２２２は、車両の高さ方向、かつ車両の車幅方向において延在している。第２領域２２２は、車両の前後方向において第１支持部材３と第２支持部材４との間に位置する。 The second region 222 is a region extending toward the floorboard 21 from the front end of the first region 221 in the longitudinal direction of the vehicle. The second region 222 extends in the height direction of the vehicle and in the width direction of the vehicle. The second region 222 is located between the first support member 3 and the second support member 4 in the longitudinal direction of the vehicle.

第３領域２２３は、第２領域２２２の車両の高さ方向における上端から前方に向かって延在する領域である。第３領域２２３は、車両の前後方向、かつ車両の車幅方向において延在している。第３領域２２３は、床板２１と第１支持部材３との間に挟まれた状態で、床板２１に固定されている。 The third region 223 is a region extending forward from the upper end of the second region 222 in the height direction of the vehicle. The third region 223 extends in the longitudinal direction of the vehicle and in the vehicle width direction of the vehicle. The third region 223 is fixed to the floorboard 21 while being sandwiched between the floorboard 21 and the first support member 3 .

第４領域２２４は、第１領域２２１の車両の前後方向における後端から床板２１に向かって延在する領域である。第４領域２２４は、車両の高さ方向、かつ車両の車幅方向において延在している。第４領域２２４は、車両の前後方向において第１支持部材３と第２支持部材４との間に位置する。 The fourth region 224 is a region extending toward the floorboard 21 from the rear end of the first region 221 in the longitudinal direction of the vehicle. The fourth region 224 extends in the height direction of the vehicle and in the width direction of the vehicle. The fourth region 224 is located between the first support member 3 and the second support member 4 in the longitudinal direction of the vehicle.

第５領域２２５は、第４領域２２４の車両の高さ方向における上端から後方に向かって延在する領域である。第５領域２２５は、車両の前後方向、かつ車両の車幅方向において延在している。第５領域２２５は、床板２１と第２支持部材４との間に挟まれた状態で、床板２１に固定されている。 The fifth region 225 is a region extending rearward from the upper end of the fourth region 224 in the height direction of the vehicle. The fifth region 225 extends in the longitudinal direction of the vehicle and in the vehicle width direction of the vehicle. The fifth region 225 is fixed to the floorboard 21 while being sandwiched between the floorboard 21 and the second support member 4 .

遮熱板２２は、床板２１に形成されている穴、第３領域２２３に形成されている穴、及び第１支持部材３に形成されている穴にボルトを挿入し、挿入したボルトにナットを締め付けることで床板２１に固定されている。また、遮熱板２２は、床板２１、第５領域２２５に形成されている穴、及び第２支持部材４に釘を挿入することで床板２１に固定されている。 The heat shield plate 22 is constructed by inserting bolts into holes formed in the floor plate 21, holes formed in the third region 223, and holes formed in the first support member 3, and then inserting nuts into the inserted bolts. It is fixed to the floorboard 21 by tightening. Further, the heat shield plate 22 is fixed to the floorboard 21 by inserting nails into the floorboard 21, holes formed in the fifth region 225, and the second support member 4.

エンジン遮熱構造Ｓにおいては、このように遮熱板２２が床板２１と第１支持部材３及び第２支持部材４との間に挟まれた状態で床板２１に固定されている。このような構成により、第１支持部材３と第２支持部材４との間の第１領域２２１の車両の前後方向における長さを大きくすることができる。その結果、エンジン遮熱構造Ｓにおいては、エンジン１からの熱が床板２１にさらに伝わりづらくすることができる。図３の構成では、床板２１と第１支持部材３との結合部に遮熱板２２の一部が支持され、床板２１と第２支持部材４との結合部に遮熱板２２の他の一部が支持されている。したがって、遮熱板２２を床板２１に固定するための専用の部品又は固定手段が不要である。 In the engine heat shield structure S, the heat shield plate 22 is thus fixed to the floor plate 21 while being sandwiched between the floor plate 21 and the first support member 3 and the second support member 4. With such a configuration, the length of the first region 221 between the first support member 3 and the second support member 4 in the longitudinal direction of the vehicle can be increased. As a result, in the engine heat shielding structure S, it is possible to make it even more difficult for heat from the engine 1 to be transmitted to the floor plate 21. In the configuration of FIG. 3, a part of the heat shield plate 22 is supported at the joint between the floor plate 21 and the first support member 3, and another part of the heat shield plate 22 is supported at the joint between the floor plate 21 and the second support member 4. Some are supported. Therefore, no special parts or fixing means are required for fixing the heat shield plate 22 to the floorboard 21.

第２領域２２２と第１支持部材３との間、及び、第４領域２２４と第２支持部材４との間には隙間が形成されており、第２領域２２２は第１支持部材３に接しておらず、第４領域２２４は第２支持部材４に接していない。エンジン遮熱構造Ｓにおいては、このような第２領域２２２及び第４領域２２４を有する遮熱板２２を有することで、熱が遮熱板２２から第１支持部材３及び第２支持部材４に伝わりづらくすることができる。 A gap is formed between the second region 222 and the first support member 3 and between the fourth region 224 and the second support member 4, and the second region 222 is in contact with the first support member 3. Therefore, the fourth region 224 is not in contact with the second support member 4. In the engine heat shield structure S, by having the heat shield plate 22 having such a second region 222 and a fourth region 224, heat is transferred from the heat shield plate 22 to the first support member 3 and the second support member 4. It can be difficult to convey.

具体的には、このような構成は、第２領域２２２及び第４領域２２４がそれぞれ第１支持部材３及び第２支持部材４に当接する構成と比較して、熱が第１支持部材３及び第２支持部材４に伝わりにくい。その結果、エンジン遮熱構造Ｓにおいては、エンジン１からの熱が遮熱板２２、第１支持部材３、及び第２支持部材４を介して床板２１に伝わりづらく、床板２１の温度の上昇を抑えることができる。 Specifically, such a configuration allows heat to be transferred to the first support member 3 and the second support member 4, compared to a configuration in which the second region 222 and the fourth region 224 contact the first support member 3 and the second support member 4, respectively. It is difficult to be transmitted to the second support member 4. As a result, in the engine heat shield structure S, heat from the engine 1 is difficult to be transmitted to the floor plate 21 via the heat shield plate 22, the first support member 3, and the second support member 4, and an increase in the temperature of the floor plate 21 is suppressed. It can be suppressed.

図４は、図２のＹ－Ｙ線断面図である。なお、図４において、第２支持部材４は省略する。遮熱板２２の左右は、開口していてもよいが、本実施形態では遮熱板２２の部材によって閉じられている構成を例示する。 FIG. 4 is a sectional view taken along the YY line in FIG. 2. Note that in FIG. 4, the second support member 4 is omitted. Although the left and right sides of the heat shield plate 22 may be open, in this embodiment, a configuration in which the left and right sides of the heat shield plate 22 are closed is illustrated.

遮熱板２２は、第６領域２２６、及び第７領域２２７を有する。第６領域２２６は、第１領域２２１の車両の車幅方向における左端から床板２１に向かって延在し、空気層を形成する空間の側面の少なくとも一部を閉じる領域である。第６領域２２６は、空気層を形成する空間の左側に位置する。第６領域２２６は、車両の前後方向、かつ車両の高さ方向において延在している。第６領域２２６は、車両の前後方向において第１支持部材３と第２支持部材４との間に位置する。 The heat shield plate 22 has a sixth region 226 and a seventh region 227. The sixth region 226 is a region that extends from the left end of the first region 221 in the vehicle width direction of the vehicle toward the floorboard 21 and closes at least a portion of the side surface of the space forming the air layer. The sixth region 226 is located on the left side of the space forming the air layer. The sixth region 226 extends in the longitudinal direction of the vehicle and in the height direction of the vehicle. The sixth region 226 is located between the first support member 3 and the second support member 4 in the longitudinal direction of the vehicle.

第７領域２２７は、第１領域２２１の車両の車幅方向における右端から床板２１に向かって延在し、空気層を形成する空間の側面の少なくとも一部を閉じる領域である。第７領域２２７は、空気層を形成する空間の右側に位置する。第７領域２２７は、車両の前後方向、かつ車両の高さ方向において延在している。第７領域２２７は、車両の前後方向において第１支持部材３と第２支持部材４との間に位置する。 The seventh region 227 is a region that extends from the right end of the first region 221 in the vehicle width direction of the vehicle toward the floor plate 21 and closes at least a portion of the side surface of the space forming the air layer. The seventh region 227 is located on the right side of the space forming the air layer. The seventh region 227 extends in the longitudinal direction of the vehicle and in the height direction of the vehicle. The seventh region 227 is located between the first support member 3 and the second support member 4 in the longitudinal direction of the vehicle.

エンジン遮熱構造Ｓにおいては、このように第６領域２２６及び第７領域２２７を有する遮熱板２２を有することで、エンジン１により加熱され、車両の前方から後方に向かって流れた空気が床板２１と遮熱板２２との間に車両の車幅方向における外側から流入するのを抑制することができる。その結果、エンジン遮熱構造Ｓにおいては、エンジン１からの熱によって荷台２の温度がさらに上昇しづらくなる。 In the engine heat shield structure S, by having the heat shield plate 22 having the sixth region 226 and the seventh region 227 in this way, the air heated by the engine 1 and flowing from the front to the rear of the vehicle can be transferred to the floor plate. 21 and the heat shield plate 22 from flowing from outside in the vehicle width direction. As a result, in the engine heat shielding structure S, it becomes more difficult for the temperature of the loading platform 2 to rise due to the heat from the engine 1.

第６領域２２６は、第２領域２２２と第４領域２２４とのいずれにも接しておらず、第６領域２２６と第２領域２２２との間、及び、第６領域２２６と第４領域２２４との間に、遮熱板２２の外へ水を排出するための空隙が形成されていてもよい。 The sixth region 226 is not in contact with either the second region 222 or the fourth region 224, and is located between the sixth region 226 and the second region 222 and between the sixth region 226 and the fourth region 224. A gap may be formed between them for draining water to the outside of the heat shield plate 22.

第７領域２２７は、第２領域２２２と第４領域２２４とのいずれにも接しておらず、第７領域２２７と第２領域２２２との間、及び、第７領域２２７と第４領域２２４との間に、遮熱板２２の外へ水を排出するための空隙が形成されていてもよい。 The seventh region 227 is not in contact with either the second region 222 or the fourth region 224, and is located between the seventh region 227 and the second region 222 and between the seventh region 227 and the fourth region 224. A gap may be formed between them for draining water to the outside of the heat shield plate 22.

遮熱板２２の左右が第６領域２２６と第７領域２２７とによって完全に閉じられ、遮熱板２２と床板２１との間に密閉空間が形成されていてもよい。しかし、第６領域２２６及び第７領域２２７が、空間を完全に閉じず、水を排出するための空隙を形成するような形状に設けられていることが、一形態において、好ましい。このような構成によれば、例えば遮熱板２２と床板２１との間に溜まった水を遮熱板２２の外側に排出することができる。 The right and left sides of the heat shield plate 22 may be completely closed by the sixth region 226 and the seventh region 227, and a sealed space may be formed between the heat shield plate 22 and the floor plate 21. However, in one form, it is preferable that the sixth region 226 and the seventh region 227 are provided in a shape that does not completely close the space and forms a gap for draining water. According to such a configuration, for example, water accumulated between the heat shield plate 22 and the floorboard 21 can be discharged to the outside of the heat shield plate 22.

以上のとおり、本実施形態の構成では、床板２１の下面に遮熱板２２が取り付けられており、床板２１と遮熱板２２との間には、空気層を形成する空間が設けられている。遮熱板２２が設けられていることによって、床板２１の温度の上昇が防止される。また、空気層は、例えば、金属等の固体に比べて、断熱性能が大きい。したがって、エンジン遮熱構造Ｓにおいては、このように床板２１と遮熱板２２との間に空気層を形成する空間が設けられていることで、エンジン１からの熱が床板２１に伝わりづらくすることができる。 As described above, in the configuration of this embodiment, the heat shield plate 22 is attached to the lower surface of the floor plate 21, and a space forming an air layer is provided between the floor plate 21 and the heat shield plate 22. . The provision of the heat shield plate 22 prevents the temperature of the floorboard 21 from rising. Furthermore, the air layer has a greater heat insulating performance than, for example, a solid such as metal. Therefore, in the engine heat shield structure S, by providing a space that forms an air layer between the floor plate 21 and the heat shield plate 22 in this way, it is difficult for the heat from the engine 1 to be transmitted to the floor plate 21. be able to.

［本実施形態に係るエンジン遮熱構造Ｓによる効果］
本実施形態に係るエンジン遮熱構造Ｓは、床板２１の下方に設けられ、エンジン１からの熱によって床板２１が加熱されることを防止する遮熱板２２を有する荷台２を有する。 [Effects of engine heat shield structure S according to this embodiment]
The engine heat shield structure S according to the present embodiment includes a loading platform 2 having a heat shield plate 22 that is provided below a floor plate 21 and prevents the floor plate 21 from being heated by heat from the engine 1.

その結果、エンジン遮熱構造Ｓにおいては、エンジン１により加熱された空気が荷台２の床板２１に接しづらくなる。したがって、エンジン遮熱構造Ｓにおいては、エンジン１からの熱によって荷台２の温度が上昇しづらくなる。 As a result, in the engine heat shielding structure S, it becomes difficult for air heated by the engine 1 to come into contact with the floor plate 21 of the loading platform 2. Therefore, in the engine heat shielding structure S, it becomes difficult for the temperature of the loading platform 2 to rise due to heat from the engine 1.

以上、本発明を実施の形態を用いて説明したが、本発明の技術的範囲は上記実施の形態に記載の範囲には限定されず、その要旨の範囲内で種々の変形及び変更が可能である。例えば、装置の全部又は一部は、任意の単位で機能的又は物理的に分散・統合して構成することができる。また、複数の実施の形態の任意の組み合わせによって生じる新たな実施の形態も、本発明の実施の形態に含まれる。組み合わせによって生じる新たな実施の形態の効果は、もとの実施の形態の効果を併せ持つ。 Although the present invention has been described above using the embodiments, the technical scope of the present invention is not limited to the scope described in the above embodiments, and various modifications and changes can be made within the scope of the gist. be. For example, all or part of the device can be functionally or physically distributed and integrated into arbitrary units. In addition, new embodiments created by arbitrary combinations of multiple embodiments are also included in the embodiments of the present invention. The effects of the new embodiment resulting from the combination have the effects of the original embodiment.

Ａ・・・キャブ
Ｓ・・・エンジン遮熱構造
１・・・エンジン
２・・・荷台
２１・・・床板
２２・・・遮熱板
２２１・・・第１領域
２２２・・・第２領域
２２３・・・第３領域
２２４・・・第４領域
２２５・・・第５領域
２２６・・・第６領域
２２７・・・第７領域
３・・・第１支持部材
４・・・第２支持部材
A... Cab S... Engine heat shield structure 1... Engine 2... Loading platform 21... Floor plate 22... Heat shield plate 221... First area 222... Second area 223 ...Third area 224...Fourth area 225...Fifth area 226...Sixth area 227...Seventh area 3...First support member 4...Second support member

Claims (6)

車両のキャブの前記車両の高さ方向における下方に設けられたエンジンと、
前記キャブの前記車両の前後方向における後方に設けられた荷台と、
を有し、
前記荷台は、
床を形成する床板と、
前記床板の下方に設けられ、前記エンジンからの熱によって前記床板が加熱されることを防止する遮熱板と、
を有するエンジン遮熱構造。 an engine provided below a cab of a vehicle in a height direction of the vehicle;
a loading platform provided at the rear of the cab in the longitudinal direction of the vehicle;
has
The loading platform is
Floorboards forming the floor;
a heat shield plate provided below the floorboard to prevent the floorboard from being heated by heat from the engine;
Engine heat shield structure with 前記床板と前記遮熱板との間には、空気層を形成する空間が設けられている、
請求項１に記載のエンジン遮熱構造。 A space forming an air layer is provided between the floor plate and the heat shield plate,
The engine heat shield structure according to claim 1. 前記床板の下方に設けられており、前記車両の車幅方向において延在する第１支持部材と、
前記床板の下方において、前記第１支持部材よりも前記前後方向における後方に設けられており、前記車幅方向において延在する第２支持部材と、
をさらに有し、
前記遮熱板は、
前記空間の下方に位置する第１領域と、
前記第１領域の前記前後方向における前端から前記床板に向かって延在する第２領域と、
前記第２領域の前記高さ方向における上端から前方に向かって延在する第３領域と、
前記第１領域の前記前後方向における後端から前記床板に向かって延在する第４領域と、
前記第４領域の前記高さ方向における上端から後方に向かって延在する第５領域と、
を有し、
前記第３領域は、前記床板と前記第１支持部材との間に挟まれた状態で、前記床板に固定されており、
前記第５領域は、前記床板と前記第２支持部材との間に挟まれた状態で、前記床板に固定されている、
請求項２に記載のエンジン遮熱構造。 a first support member provided below the floorboard and extending in the vehicle width direction of the vehicle;
a second support member that is provided below the floorboard and rearward in the front-rear direction than the first support member and extends in the vehicle width direction;
It further has
The heat shield plate is
a first region located below the space;
a second region extending from the front end of the first region in the front-rear direction toward the floorboard;
a third region extending forward from an upper end of the second region in the height direction;
a fourth region extending from the rear end of the first region in the front-rear direction toward the floorboard;
a fifth region extending rearward from an upper end of the fourth region in the height direction;
has
The third region is fixed to the floorboard while being sandwiched between the floorboard and the first support member,
The fifth region is fixed to the floorboard while being sandwiched between the floorboard and the second support member.
The engine heat shield structure according to claim 2. 前記第２領域と前記第１支持部材との間、及び、前記第４領域と前記第２支持部材との間には隙間が形成されており、前記第２領域が前記第１支持部材に接しておらず、前記第４領域が前記第２支持部材に接していない、
請求項３に記載のエンジン遮熱構造。 A gap is formed between the second region and the first support member and between the fourth region and the second support member, and the second region is in contact with the first support member. and the fourth region is not in contact with the second support member.
The engine heat shield structure according to claim 3. 前記遮熱板は、
前記第１領域の前記車幅方向における左端から前記床板に向かって延在し、前記空間の少なくとも一部を閉じる第６領域と、
前記第１領域の前記車幅方向における右端から前記床板に向かって延在し、前記空間の少なくとも一部を閉じる第７領域と、
をさらに有する、
請求項３又は４に記載のエンジン遮熱構造。 The heat shield plate is
a sixth region extending from the left end of the first region in the vehicle width direction toward the floor plate and closing at least a portion of the space;
a seventh region extending from the right end of the first region in the vehicle width direction toward the floor plate and closing at least a portion of the space;
further having,
The engine heat shield structure according to claim 3 or 4. 前記第６領域は、前記第２領域と前記第４領域とのいずれにも接しておらず、前記第６領域と前記第２領域との間、及び、前記第６領域と前記第４領域との間に、前記遮熱板の外へ水を排出するための空隙が形成され、
前記第７領域は、前記第２領域と前記第４領域とのいずれにも接しておらず、前記第７領域と前記第２領域との間、及び、前記第７領域と前記第４領域との間に、前記遮熱板の外へ水を排出するための空隙が形成されている、
請求項５に記載のエンジン遮熱構造。 The sixth region is not in contact with either the second region or the fourth region, and is located between the sixth region and the second region and between the sixth region and the fourth region. A gap is formed between the heat shield plate for draining water to the outside of the heat shield plate,
The seventh region is not in contact with either the second region or the fourth region, and is located between the seventh region and the second region and between the seventh region and the fourth region. A gap is formed between the heat shield plate and the heat shield plate for draining water to the outside of the heat shield plate.
The engine heat shield structure according to claim 5.
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5822867Y2 (en) * 1978-12-28 1983-05-16 マツダ株式会社 Freight car cargo box cooling structure
JP2010064296A (en) * 2008-09-09 2010-03-25 Mitsubishi Alum Co Ltd Heat barrier sheet
JP2015131506A (en) * 2014-01-09 2015-07-23 日本フルハーフ株式会社 Drainage system in box-type load-carrying platform of freezing car
JP2019098941A (en) * 2017-12-04 2019-06-24 洋一 久永 Cargo transport vehicle and cold insulation equipment

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5822867Y2 (en) * 1978-12-28 1983-05-16 マツダ株式会社 Freight car cargo box cooling structure
JP2010064296A (en) * 2008-09-09 2010-03-25 Mitsubishi Alum Co Ltd Heat barrier sheet
JP2015131506A (en) * 2014-01-09 2015-07-23 日本フルハーフ株式会社 Drainage system in box-type load-carrying platform of freezing car
JP2019098941A (en) * 2017-12-04 2019-06-24 洋一 久永 Cargo transport vehicle and cold insulation equipment

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