JP2017031835A - Heat insulator - Google Patents

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JP2017031835A
JP2017031835A JP2015149997A JP2015149997A JP2017031835A JP 2017031835 A JP2017031835 A JP 2017031835A JP 2015149997 A JP2015149997 A JP 2015149997A JP 2015149997 A JP2015149997 A JP 2015149997A JP 2017031835 A JP2017031835 A JP 2017031835A
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heat insulator
space
close contact
exhaust pipe
plate member
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JP6419038B2 (en
Inventor
英雄 平田
Hideo Hirata
英雄 平田
光司 秋山
Koji Akiyama
光司 秋山
潤仁 足立
Mitsuhito Adachi
潤仁 足立
富喜雄 森野
Fukio Morino
富喜雄 森野
晃一 乃万
Koichi Noma
晃一 乃万
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Nihon Tokushu Toryo Co Ltd
Toyota Motor Corp
Chugai Co Ltd
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Nihon Tokushu Toryo Co Ltd
Toyota Motor Corp
Chugai Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To improve durability of a heat insulator.SOLUTION: The heat insulator 10 for covering over an exhaust pipe 3 of an engine 2 includes: two plate materials 11, 12 bonded to each other while encircling a space 14 inside them; a close contact part 18 where the two plate materials 11, 12 of which the respective surfaces come into close contact with each other; and a through-hole 20 communicated to the outside of the two plate materials 11, 12 from the close contact part 18.SELECTED DRAWING: Figure 3

Description

本発明は、内燃機関の排気管に被せられるヒートインシュレータに関する。   The present invention relates to a heat insulator that covers an exhaust pipe of an internal combustion engine.

内燃機関にて発生する排気ガスが流通される排気管は比較的高温となる。内燃機関を搭載する自動車等の車両においては、制御機器や車室内を排気管の高温から保護するため、排気管にヒートインシュレータが被せられている。   The exhaust pipe through which the exhaust gas generated in the internal combustion engine flows is relatively hot. In a vehicle such as an automobile equipped with an internal combustion engine, a heat insulator is covered on the exhaust pipe in order to protect the control device and the vehicle interior from the high temperature of the exhaust pipe.

ヒートインシュレータは、例えば二枚の金属板によって内部に空間を囲い、加締めなどによって二枚の金属板それぞれの縁部を互いに接合して構成される。さらに、二枚の金属板の間の空間に吸音材を収容し、排気ガスが流通されるのに伴って排気管に発生する騒音を減衰させて車室内の静粛性を高めるように構成されたヒートインシュレータも知られている（例えば、特許文献１参照）。   The heat insulator is configured, for example, by enclosing a space inside by two metal plates and joining the edges of the two metal plates to each other by caulking or the like. Further, a heat insulator configured to house a sound absorbing material in a space between two metal plates and attenuate noise generated in the exhaust pipe as the exhaust gas circulates, thereby improving quietness in the vehicle interior. Is also known (see, for example, Patent Document 1).

特開２００１−６５３６３号公報JP 2001-65363 A

内部に空間を囲うように二枚の金属板それぞれの縁部が互いに接合されてなるヒートインシュレータでは、二枚の金属板それぞれの縁部の間に生じた隙間などから二枚の金属板の間に水が浸入する場合がある。浸入した水は、車体や排気管に固定されるヒートインシュレータの固定部などであって二枚の金属板の表面が互いに密接した密接部に滞留し易い。   In a heat insulator in which the edges of two metal plates are joined to each other so as to enclose a space inside, water is generated between the two metal plates due to a gap formed between the edges of the two metal plates. May penetrate. The infiltrated water tends to stay in a close part where the surfaces of the two metal plates are in close contact with each other, such as a fixing part of a heat insulator fixed to the vehicle body or the exhaust pipe.

滞留水は、内燃機関の稼働時には排気管の高熱に晒されて気化し、また、内燃機関の停止時には冷却されて液化し、寒冷地においてはさらに固化し、内燃機関の稼働及び停止に合わせて、密接部で状態変化を繰り返す。そして、密接部での滞留水の繰り返しの状態変化に伴う体積変化に起因して、二枚の金属板の接合部に繰り返し負荷が作用する。このため、二枚の金属板の接合部が破損する虞があった。   The stagnant water is vaporized by being exposed to the high heat of the exhaust pipe when the internal combustion engine is in operation, and is cooled and liquefied when the internal combustion engine is stopped, and further solidifies in cold regions. , Repeat the state change in close contact. Then, due to the volume change accompanying the repeated state change of the staying water in the close contact portion, a load is repeatedly applied to the joint portion of the two metal plates. For this reason, there exists a possibility that the junction part of two metal plates may be damaged.

本発明は、上述した事情に鑑みなされたものであって、その目的は、ヒートインシュレータの耐久性を高めることにある。   This invention is made | formed in view of the situation mentioned above, The objective is to improve durability of a heat insulator.

本発明の一態様のヒートインシュレータは、内燃機関の排気管に被せられるヒートインシュレータであって、内部に空間を囲って互いに接合された二枚の板材を備え、前記二枚の板材それぞれの表面が互いに密接した密接部と、前記密接部から前記二枚の板材の外部に通じる気液流通経路と、を有する。   A heat insulator according to one aspect of the present invention is a heat insulator that covers an exhaust pipe of an internal combustion engine, and includes two plate members that are joined to each other so as to surround a space, and each of the surfaces of the two plate members has a surface. A close portion that is in close contact with each other, and a gas-liquid flow path that leads from the close portion to the outside of the two plate members.

本発明によれば、ヒートインシュレータの耐久性を高めることができる。   ADVANTAGE OF THE INVENTION According to this invention, durability of a heat insulator can be improved.

本発明の実施形態を説明するための、ヒートインシュレータを備える車両の一例の模式図である。It is a mimetic diagram of an example of vehicles provided with a heat insulator for explaining an embodiment of the present invention. 図１の車両のヒートインシュレータの概略構成を示す斜視図である。It is a perspective view which shows schematic structure of the heat insulator of the vehicle of FIG. 図２のヒートインシュレータの斜視図である。It is a perspective view of the heat insulator of FIG. 図２のヒートインシュレータの分解斜視図である。It is a disassembled perspective view of the heat insulator of FIG. 図３におけるＶ−Ｖ線断面図である。It is the VV sectional view taken on the line in FIG. 図３におけるＶＩ−ＶＩ線断面図である。It is the VI-VI sectional view taken on the line in FIG.

図１及び図２は、本発明の実施形態を説明するための、ヒートインシュレータ及びヒートインシュレータを備える車両の一例を示す。   FIG.1 and FIG.2 shows an example of the vehicle provided with the heat insulator and heat insulator for demonstrating embodiment of this invention.

車両１において、エンジン２は車両前部に設置されており、エンジン２にて発生する排気ガスが流通されるエキゾーストパイプ３は、ダッシュロアパネル４及びフロアパネル５の裏側（車室内側とは反対側）でエンジン２から車両後部に引き回されている。   In the vehicle 1, the engine 2 is installed in the front part of the vehicle, and the exhaust pipe 3 through which exhaust gas generated in the engine 2 circulates is located behind the dash lower panel 4 and the floor panel 5 (opposite the vehicle interior side). ) From the engine 2 to the rear of the vehicle.

ヒートインシュレータ１０は、図示の例では、エキゾーストパイプ３のダッシュロアパネル４に沿う部分に被せられており、ダッシュボードに設置される制御機器や車室内をエキゾーストパイプ３の高温から保護する。   In the illustrated example, the heat insulator 10 is placed on a portion of the exhaust pipe 3 along the dash lower panel 4, and protects the control device and the vehicle compartment installed on the dashboard from the high temperature of the exhaust pipe 3.

なお、ヒートインシュレータ１０の設置箇所は図示の例に限られるものではない。例えば、ヒートインシュレータ１０はエキゾーストパイプ３のフロアパネル５に沿う部分に被せられてもよい。   In addition, the installation location of the heat insulator 10 is not restricted to the example of illustration. For example, the heat insulator 10 may be put on a portion of the exhaust pipe 3 along the floor panel 5.

車両１の排気系統は、二つのエキゾーストマニホールド６によってエンジン２の近傍で二系統に集約されおり、エキゾーストマニホールド６それぞれからエキゾーストパイプ３が並行して延びている。   The exhaust system of the vehicle 1 is integrated into two systems in the vicinity of the engine 2 by two exhaust manifolds 6, and an exhaust pipe 3 extends in parallel from each of the exhaust manifolds 6.

ヒートインシュレータ１０は、エキゾーストパイプ３それぞれに被せられており、エキゾーストパイプ３のダッシュロアパネル４側に向く後面部、及び並行するもう一方のエキゾーストパイプ３側とは反対側に向く一方の側面部を覆い、エキゾーストパイプ３に沿って設置されている。   The heat insulator 10 is covered with each exhaust pipe 3 and covers a rear surface portion of the exhaust pipe 3 facing the dash lower panel 4 side and one side surface portion facing the opposite side of the other exhaust pipe 3 side. It is installed along the exhaust pipe 3.

なお、ヒートインシュレータ１０の構成は図示の例に限られるものではない。例えば、排気系統が一つのエキゾーストマニホールド６によってエンジン２の近傍で一系統に集約され、一本のエキゾーストパイプ３がダッシュロアパネル４に沿って引き回される場合もあり、この場合に、ヒートインシュレータ１０は、エキゾーストパイプ３のダッシュロアパネル４側に向く後面部、及び両側面部を覆ってもよい。   The configuration of the heat insulator 10 is not limited to the illustrated example. For example, the exhaust system may be integrated into one system in the vicinity of the engine 2 by one exhaust manifold 6, and one exhaust pipe 3 may be routed along the dash lower panel 4. In this case, the heat insulator 10 May cover the rear surface part facing the dash lower panel 4 side of the exhaust pipe 3 and both side surface parts.

図３から図６は、ヒートインシュレータ１０の構成を示す。   3 to 6 show the configuration of the heat insulator 10.

ヒートインシュレータ１０は、互いに重ね合される第１板材１１及び第２板材１２を備える。第１板材１１及び第２板材１２は、外形状が略同じに形成されており、一方の第２板材１２の縁部には、縁に沿って適宜な間隔をあけて複数の加締め片１３が突設されている。第１板材１１の縁部を第２板材１２の縁部との間に挟むようにして加締め片１３が加締められ、第１板材１１の縁部と第２板材１２の縁部とは互いに接合されている。第１板材１１及び第２板材１２としては、例えば鋼やアルミニウム合金などの金属板が用いられる。なお、第１板材１１と第２板材１２との接合部位及び接合方法は縁部の加締めに限られず、縁部や縁部より内側などの適宜な部位をリベットなどの締結部材を用いて締結してもよい。   The heat insulator 10 includes a first plate member 11 and a second plate member 12 that are overlapped with each other. The first plate member 11 and the second plate member 12 are formed to have substantially the same outer shape, and a plurality of caulking pieces 13 are provided at the edge of one second plate member 12 at an appropriate interval along the edge. Is protruding. The crimping piece 13 is crimped so that the edge of the first plate 11 is sandwiched between the edge of the second plate 12, and the edge of the first plate 11 and the edge of the second plate 12 are joined together. ing. As the 1st board | plate material 11 and the 2nd board | plate material 12, metal plates, such as steel and an aluminum alloy, are used, for example. In addition, the joining site | part and joining method of the 1st board | plate material 11 and the 2nd board | plate material 12 are not restricted to caulking of an edge part, Fastening an appropriate site | part, such as an edge part and an inner side from an edge part, using fastening members, such as a rivet. May be.

接合された第１板材１１と第２板材１２との間には空間１４が囲われている。図示の例では、空間１４は、エキゾーストパイプ３の一方の側面部を覆うヒートインシュレータ１０の部位の内部に広がっている。   A space 14 is enclosed between the joined first plate member 11 and second plate member 12. In the illustrated example, the space 14 extends inside the portion of the heat insulator 10 that covers one side surface portion of the exhaust pipe 3.

本例では、ヒートインシュレータ１０は、空間１４に収容される吸音材１５をさらに備える。ヒートインシュレータ１０がエキゾーストパイプ３に被せられた状態でエキゾーストパイプ３に面する第２板材１２には、空間１４に連通する多数の吸音孔１６が形成されている。吸音材１５としては、例えばグラスウールなどからなる繊維質シートや、発泡樹脂などからなる多孔質シートなどが用いられる。   In this example, the heat insulator 10 further includes a sound absorbing material 15 accommodated in the space 14. A large number of sound absorbing holes 16 communicating with the space 14 are formed in the second plate member 12 facing the exhaust pipe 3 in a state where the heat insulator 10 is covered with the exhaust pipe 3. As the sound absorbing material 15, for example, a fiber sheet made of glass wool or the like, a porous sheet made of foamed resin, or the like is used.

ヒートインシュレータ１０は、排気ガスが流通されることに伴ってエキゾーストパイプ３に発生する騒音を、吸音孔１６を通して空間１４に取り込み、空間１４に収容されている吸音材１５によって減衰させる。これにより、車室内の静粛性が高められる。   The heat insulator 10 takes in the noise generated in the exhaust pipe 3 as the exhaust gas is circulated into the space 14 through the sound absorption holes 16, and attenuates the noise by the sound absorbing material 15 accommodated in the space 14. Thereby, the quietness in a vehicle interior is improved.

また、エキゾーストパイプ３のダッシュロアパネル４側に向く後面部を覆うヒートインシュレータ１０の部位には、ヒートインシュレータ１０をエキゾーストパイプ３又は車体に固定するためのボルト（不図示）が挿通される固定孔１７が形成されている。そして、固定孔１７の周囲には、第１板材１１の表面と第２板材１２の表面とが互いに密接した密接部１８が設けられている。   Further, a fixing hole 17 through which a bolt (not shown) for fixing the heat insulator 10 to the exhaust pipe 3 or the vehicle body is inserted in a portion of the heat insulator 10 that covers the rear surface portion of the exhaust pipe 3 facing the dash lower panel 4 side. Is formed. In the vicinity of the fixing hole 17, a close portion 18 is provided in which the surface of the first plate member 11 and the surface of the second plate member 12 are in close contact with each other.

隣り合う加締め片１３の間で第１板材１１の縁部と第２板材１２の縁部との間に生じた隙間を通し、また、第２板材１２に多数の吸音孔１６が形成されている本例のヒートインシュレータ１０では吸音孔１６を通して、第１板材１１と第２板材１２との間に水が浸入する場合がある。ヒートインシュレータ１０には密接部１８から外部に通じる気液流通経路が設けられ、浸入した水が密接部１８に滞留することが抑制されている。   A gap formed between the edge of the first plate member 11 and the edge of the second plate member 12 passes between the adjacent crimping pieces 13, and a number of sound absorbing holes 16 are formed in the second plate member 12. In the heat insulator 10 of this example, water may enter between the first plate member 11 and the second plate member 12 through the sound absorbing holes 16. The heat insulator 10 is provided with a gas-liquid flow path that leads to the outside from the close contact portion 18, so that the infiltrated water is prevented from staying in the close contact portion 18.

本例では、気液流通経路の一つとして、密接部１８において第１板材１１及び第２板材１２のうち少なくとも一方の板材に形成された一つ以上の貫通孔を含み、図示の例では、第１板材１１に三つの貫通孔２０が設けられている。   In this example, as one of the gas-liquid flow paths, one or more through-holes formed in at least one of the first plate member 11 and the second plate member 12 in the close contact portion 18 are included. Three through holes 20 are provided in the first plate member 11.

また、本例では、気液流通経路の一つとして、密接部１８において第１板材１１及び第２板材１２のうち少なくとも一方の板材に凹設され、密接部１８に隣設されている空間１４に達する一つ以上の溝と、空間１４から外部に通じる部分経路とを含み、図示の例では、第２板材１２に溝２１が設けられている。   Further, in this example, as one of the gas-liquid flow paths, a space 14 that is recessed in at least one of the first plate member 11 and the second plate member 12 in the close contact portion 18 and is adjacent to the close contact portion 18. In the illustrated example, a groove 21 is provided in the second plate 12 in the example shown in the drawing.

空間１４から外部に通じる部分経路は、第１板材１１及び第２板材１２それぞれの縁部の間に生じた隙間であって空間１４に達する隙間で構成することができる。第１板材１１及び第２板材１２それぞれの縁部の間に生じる隙間を部分経路とする場合に、図示の例のように、第１板材１１及び第２板材１２それぞれの縁部に不整合部２２を設けて空間１４に達する隙間を意図的に形成するようにしてもよい。不整合部２２は、例えば第１板材１１及び第２板材１２それぞれの縁部における屈曲部分など、形状が比較的急峻に変化する変化部分に好適に設けることができる。   The partial path that leads from the space 14 to the outside can be formed by a gap that is generated between the edges of the first plate member 11 and the second plate member 12 and reaches the space 14. When a gap generated between the edge portions of the first plate member 11 and the second plate member 12 is used as a partial path, an inconsistent portion is formed at each edge portion of the first plate member 11 and the second plate member 12 as shown in the illustrated example. 22 may be provided to intentionally form a gap reaching the space 14. The mismatching portion 22 can be suitably provided at a change portion where the shape changes relatively steep, such as a bent portion at the edge of each of the first plate member 11 and the second plate member 12.

また、空間１４から外部に通じる部分経路は、第１板材１１及び第２板材１２のうち少なくとも一方の板材に形成された貫通孔で構成することができ、本例のヒートインシュレータ１０では、第２板材１２に形成された吸音孔１６を部分経路としての貫通孔とすることができる。   Moreover, the partial path | route which leads to the exterior from the space 14 can be comprised by the through-hole formed in at least one board | plate material among the 1st board | plate material 11 and the 2nd board | plate material 12, In the heat insulator 10 of this example, it is 2nd. The sound absorbing hole 16 formed in the plate member 12 can be a through hole as a partial path.

第１板材１１と第２板材１２との間に浸入した水が毛管現象などによって密接部１８に浸透しているものとして、エンジン２の稼働時には、ヒートインシュレータ１０がエキゾーストパイプ３の高熱に晒され、密接部１８に浸透している水が気化する。   Assuming that water that has entered between the first plate member 11 and the second plate member 12 penetrates the close contact portion 18 by capillary action or the like, the heat insulator 10 is exposed to the high heat of the exhaust pipe 3 when the engine 2 is operating. The water that has permeated the intimate portion 18 is vaporized.

気化に伴って体積増加した蒸気は、第１板材１１に形成された貫通孔２０を通して外部に放出される。また、蒸気は、第２板材１２に形成された溝２１を経て空間１４に流入し、空間１４から外部に通じる不整合部２２の隙間や吸音孔１６を通して外部に放出される。   The vapor whose volume has increased with vaporization is discharged to the outside through the through hole 20 formed in the first plate member 11. Further, the steam flows into the space 14 through the grooves 21 formed in the second plate member 12 and is discharged to the outside through the gaps of the mismatching portions 22 communicating from the space 14 to the outside and the sound absorption holes 16.

エンジン２の停止時には、ヒートインシュレータ１０が冷却され、第１板材１１と第２板材１２との間に残る蒸気が液化する。密接部１８に浸透していた水が気化してなる蒸気は、上記のとおり密接部１８から外部又は空間１４に放出されており、密接部１８に蒸気が残っていたとしても、その蒸気が液化してなる水の量は気化する前に密接部１８に浸透していた水の量に比べて削減されており、密接部１８に水が滞留することが抑制される。なお、空間１４に残る蒸気が液化してなる水は、不整合部２２の隙間や吸音孔１６を通して外部に排出される。   When the engine 2 is stopped, the heat insulator 10 is cooled, and the steam remaining between the first plate member 11 and the second plate member 12 is liquefied. The vapor formed by vaporizing water that has permeated the close contact portion 18 is discharged from the close contact portion 18 to the outside or the space 14 as described above, and even if the steam remains in the close contact portion 18, the steam is liquefied. The amount of water thus formed is reduced as compared with the amount of water that has permeated the intimate portion 18 before vaporization, and water is prevented from staying in the intimate portion 18. The water formed by liquefying the steam remaining in the space 14 is discharged to the outside through the gaps of the mismatching portions 22 and the sound absorption holes 16.

このように、密接部１８に浸透した水が気化してなる蒸気は密接部１８から放出されるので、蒸気が行き場なく密接部１８に滞留して密接部１８に過大な内圧が作用することが抑制され、第１板材１１の縁部と第２板材１２の縁部とを接合する加締め片１３に作用する負荷が軽減される。そして、密接部１８に水が滞留することが抑制されるので、密接部１８における滞留水の繰り返しの状態変化に起因して加締め片１３に繰り返し負荷が作用することが回避される。以上により、ヒートインシュレータ１０の耐久性を高めることができる。   As described above, the vapor formed by vaporization of the water that has permeated into the close contact portion 18 is discharged from the close contact portion 18, so that the steam stays in the close contact portion 18 without going to the place, and an excessive internal pressure acts on the close contact portion 18. It is suppressed and the load which acts on the crimping piece 13 which joins the edge of the 1st board | plate material 11 and the edge of the 2nd board | plate material 12 is reduced. And since it is suppressed that water retains in the close part 18, it is avoided that a load acts on the crimping piece 13 due to the repeated state change of the stay water in the close part 18. As described above, the durability of the heat insulator 10 can be improved.

上述したヒートインシュレータ１０の構成は例示であって、本発明の要旨を逸脱しない範囲内で適宜な変形や変更を施すことが可能である。例えば、上述したヒートインシュレータ１０では、密接部１８から外部に直接通じる気液流通経路としての貫通孔２０と、密接部１８から空間１４を経て外部に通じる気液流通経路としての溝２１及び吸音孔１６、並びに溝２１及び不整合部２２とが設けられているが、これらの気液流通経路はそれぞれ単独で設けられていてもよく、又は複数組み合わされて設けられていてもよく、いずれの場合でも、上述したヒートインシュレータ１０と同様にして、耐久性を高めることができる。   The configuration of the heat insulator 10 described above is an exemplification, and appropriate modifications and changes can be made without departing from the scope of the present invention. For example, in the heat insulator 10 described above, a through hole 20 as a gas-liquid circulation path that directly communicates from the close portion 18 to the outside, and a groove 21 and a sound absorption hole as a gas-liquid flow path that communicates from the close portion 18 through the space 14 to the outside. 16 and the groove 21 and the mismatching portion 22 are provided. These gas-liquid flow paths may be provided alone or in combination, and in any case However, the durability can be increased in the same manner as the heat insulator 10 described above.

１ 車両
２ エンジン（内燃機関）
３ エキゾーストパイプ（排気管）
４ ダッシュロアパネル
５ フロアパネル
６ エキゾーストマニホールド
１０ ヒートインシュレータ
１１ 第１板材
１２ 第２板材
１３ 加締め片
１４ 空間
１５ 吸音材
１６ 吸音孔
１７ 固定孔
１８ 密接部
２０ 貫通孔
２１ 溝
２２ 不整合部 1 Vehicle 2 Engine (Internal combustion engine)
3 Exhaust pipe (exhaust pipe)
4 Dash Lower Panel 5 Floor Panel 6 Exhaust Manifold 10 Heat Insulator 11 First Plate Material 12 Second Plate Material 13 Clamping Piece 14 Space 15 Sound Absorbing Material 16 Sound Absorbing Hole 17 Fixing Hole 18 Close Portion 20 Through Hole 21 Groove 22 Misalignment Portion

Claims (5)

内燃機関の排気管に被せられるヒートインシュレータであって、
内部に空間を囲って互いに接合された二枚の板材を備え、
前記二枚の板材それぞれの表面が互いに密接した密接部と、
前記密接部から前記二枚の板材の外部に通じる気液流通経路と、
を有するヒートインシュレータ。 A heat insulator that covers an exhaust pipe of an internal combustion engine,
It has two plates that are joined together surrounding the space inside,
A close portion where the surfaces of the two plate members are in close contact with each other;
A gas-liquid flow path leading from the intimate part to the outside of the two plate members;
Heat insulator. 請求項１記載のヒートインシュレータであって、
前記気液流通経路は、前記密接部において前記二枚の板材のうち少なくとも一方の板材に形成された一つ以上の貫通孔を含むヒートインシュレータ。 The heat insulator according to claim 1,
The gas-liquid flow path is a heat insulator including one or more through holes formed in at least one of the two plates at the close contact portion. 請求項１又は２記載のヒートインシュレータであって、
前記密接部は前記空間に隣設されており、
前記気液流通経路は、
前記密接部において前記二枚の板材のうち少なくとも一方の板材に凹設され、前記空間に達する一つ以上の溝と、
前記空間から前記二枚の板材の外部に通じる部分経路と、
を含むヒートインシュレータ。 The heat insulator according to claim 1 or 2,
The close contact portion is adjacent to the space;
The gas-liquid flow path is
One or more grooves that are recessed in at least one of the two plates in the close contact portion and reach the space;
A partial path leading from the space to the outside of the two plate members;
Including heat insulator. 請求項３記載のヒートインシュレータであって、
前記空間に収容される吸音材をさらに備え、
前記二枚の板材のうち排気管側に配置される一方の板材には前記空間に通じる多数の吸音孔が穿設されており、
前記部分経路は、前記吸音孔を含むヒートインシュレータ。 A heat insulator according to claim 3,
A sound absorbing material accommodated in the space;
A number of sound absorbing holes leading to the space are formed in one of the two plates disposed on the exhaust pipe side,
The partial path is a heat insulator including the sound absorption hole. 請求項３又は４記載のヒートインシュレータであって、
前記二枚の板材それぞれの縁部には、隙間を開けて前記空間に達する一つ以上の不整合部が設けられており、
前記部分経路は、前記不整合部の隙間を含むヒートインシュレータ。 The heat insulator according to claim 3 or 4,
At each edge of the two plate members, one or more inconsistent portions reaching the space with a gap are provided,
The partial path is a heat insulator including a gap between the mismatched portions.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019138164A (en) * 2018-02-06 2019-08-22 株式会社キーレックス Assembly device and assembly method for heat insulator
CN110636956A (en) * 2017-02-24 2019-12-31 泰佛产品服务与创新公司 Sound-insulating cover for motor vehicle engine

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5771729U (en) * 1980-10-20 1982-05-01
JPH0592422U (en) * 1992-05-19 1993-12-17 日産ディーゼル工業株式会社 Engine exhaust manifold cover
JPH0932545A (en) * 1995-07-17 1997-02-04 Mitsubishi Motors Corp Heat insulator structure
JP2000190744A (en) * 1998-12-25 2000-07-11 Unipres Corp Exhaust device provided with heat shielding and sound absorbing functions
JP2009541630A (en) * 2006-06-24 2009-11-26 エルリンククリンガー アクチェンゲゼルシャフト Structural components, especially heat shields

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5771729U (en) * 1980-10-20 1982-05-01
JPH0592422U (en) * 1992-05-19 1993-12-17 日産ディーゼル工業株式会社 Engine exhaust manifold cover
JPH0932545A (en) * 1995-07-17 1997-02-04 Mitsubishi Motors Corp Heat insulator structure
JP2000190744A (en) * 1998-12-25 2000-07-11 Unipres Corp Exhaust device provided with heat shielding and sound absorbing functions
JP2009541630A (en) * 2006-06-24 2009-11-26 エルリンククリンガー アクチェンゲゼルシャフト Structural components, especially heat shields

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110636956A (en) * 2017-02-24 2019-12-31 泰佛产品服务与创新公司 Sound-insulating cover for motor vehicle engine
JP2019138164A (en) * 2018-02-06 2019-08-22 株式会社キーレックス Assembly device and assembly method for heat insulator

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